JEOL - Company History

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Financial history 1954–2026 — revenue, cost structure, balance sheet, cash flow and key ratios, year by year →

Founded 1949
Founder Kazato Kenji
Founding location 東京都三鷹
Core business at founding Development and manufacture of electron microscopes
Listed 1962
President & CEO Oi Izumi President & CEO since 2019 (age 62, as of 2026)
Current priority Capacity investment · In-house production Raising output of semiconductor metrology equipment and bringing superconducting magnets in-house
Founding
In May 1949 Kazato Kenji and those around him established Japan Electron Optics Laboratory Co., Ltd. at Mitaka in Tokyo with a staff of thirteen and capital of $1,389 (¥500,000). The starting point was May 1946, when a group that saw the promotion of science and a nation built on industry as the road back for Japan began research and development on the electron microscope at Mobara in Chiba Prefecture and spent roughly a year and a half on trial work. Kazato was a technical officer who had run an anti-aircraft missile development programme at the Naval Technical Research Institute, and the point of departure was Kuroiwa Daisuke's Denshi Kenbikyo (電子顕微鏡, Electron Microscopes), which he read while sorting through his effects on demobilisation. At the time only a handful of firms in Europe and North America — Siemens of Germany, RCA of the United States — could build the instrument, and in occupied Japan simply obtaining one was difficult. Around the time of incorporation the company completed the JEM-1 electron microscope, and in February 1950 the Ministry of International Trade and Industry recommended it as an enterprise to be fostered and developed. In May 1961 the name was changed to Nihon Denshi Co., Ltd.
The Decision
A company that started out as a substitute for imports ended up making instruments for which there is no substitute. It entered industrial equipment in 1952 with a high-frequency induction hardening unit, analytical instruments in 1956 with a magnetic resonance apparatus and medical instruments in 1972 with an automatic biochemical analyser, so that it came to hold four product groups including the electron microscope. In April 1973 it opened owner-led decision-making up to a collective system and moved to a three-division structure. After the first oil crisis it judged that its headcount no longer matched sales, and settled on a plan to bring the 2,568 employees on the books at the end of March 1974 down to 1,900 a year later. Oi Izumi, who took office as president in June 2019, concentrated investment on semiconductor metrology and opened the Musashimurayama plant in October 2021. Developing, jointly with IMS of Austria, a multi-beam electron-beam lithography system for writing EUV-generation photomasks is what tied the results of a company that had supplied instruments to universities to the capital spending of semiconductor manufacturers.
Today
The scientific and metrology instruments the company was founded on account for 65 per cent of sales, while six-tenths of the profit comes from equipment for semiconductors. Consolidated revenue of $1.1B (¥179bn) in the year to March 2026 breaks down into $734.7M (¥116bn) in Scientific / Metrology Instruments, $304.1M (¥48bn) in Industrial Equipment and $94.2M (¥15bn) in Medical Equipment. Segment profit was $122M (¥19bn) in Industrial Equipment against $82.2M (¥13bn) in Scientific / Metrology Instruments and no more than $379,363 (¥60m) in Medical Equipment, so that Industrial Equipment, at 27 per cent of sales, produced six-tenths of the profit. Operating profit was $164.4M (¥26bn) and net profit $139.1M (¥22bn). The preceding year to March 2025 had been a record, with revenue of $1.3B (¥197bn) and operating profit of $237.2M (¥36bn); a pause in semiconductor investment then brought both sales and profit down. Industrial Equipment centres on electron-beam lithography systems and CT for inspecting semiconductor packages, and the electron optics built up by delivering electron microscopes to universities has become a business whose results rest on capital spending at semiconductor plants.
Competition
What put the company at a disadvantage was not the quality of its products but the method it had chosen. Its own survey for the 1973 financial year put it second in the world in transmission electron microscopes, behind Philips, with a share of about 25 per cent, and first in the world in scanning electron microscopes. In nuclear magnetic resonance, on the other hand, new products from other makers using the pulsed Fourier-transform method left its main models at a disadvantage; it completed an FT-NMR instrument in April 1971, but repeated changes of specification made the European and American markets hard going. In electron microscopes it competed from the 1970s with Hitachi, Siemens and Zeiss, and it still holds a leading place in an oligopoly with Hitachi High-Tech, Thermo Fisher Scientific and Zeiss. In nuclear magnetic resonance, where the choice of method had put it behind, it acquired in January 2025 a maker of the superconducting magnets that higher field strengths require, bringing in-house, fifty years on, a component it had been buying outside.

Timeline

1949–1971Born of the drive to build electron microscopes in Japan

  1. 1946Kazato Kenji's group begins electron microscope R&D at Mobara, Chiba
  2. 1949Japan Electron Optics Laboratory founded in Mitaka, Tokyo — 13 staff, ¥500,000 capital
  3. 1950MITI recommends the firm as an enterprise to be fostered and developed
  4. 1952Entry into industrial equipment with a high-frequency induction hardening unit
  5. 1955The Mitaka works is bought; offices open in Marunouchi, Osaka and Paris
  6. 1956Entry into analytical instruments with a magnetic resonance apparatus
  7. 1956An electron microscope is delivered to the French atomic energy research institute
  8. 1960Sakura Seiki (later JEOL Technics) founded at Akishima for volume production
  9. 1961Renamed Nihon Denshi Co., Ltd.; the Superscope is completed
  10. 1962Listed on the second section of the Tokyo Stock Exchange
  11. 1962JEOLCO (U.S.A.) INC. established
  12. 1964JEOLCO (FRANCE) S.A. established
  13. 1966Head office moves to Akishima; listed on the TSE first section
  14. 1966A one-million-volt ultra-high-voltage electron microscope is completed
  15. 1971The English company name is unified as JEOL Ltd.

1972–2008Multiple axes in industry, medicine and analysis, and a European network

  1. 1972Entry into medical instruments with an automatic biochemical analyser
  2. 1973Subsidiaries established in the Netherlands (February) and Sweden (March)
  3. 1973The executive committee is abolished for collective decision-making; three divisions and a retirement age of 65 for the president
  4. 1974JEOL Anstalt (Liechtenstein) covers Eastern Europe; eleven overseas subsidiaries in all
  5. 1975Headcount cut from 2,568 to 1,900 under an agreement with the union
  6. 1984An Italian subsidiary is established
  7. 1994A Korean subsidiary is established
  8. 1995JEOL ASIA is established in Singapore
  9. 1997A German subsidiary is established
  10. 1999A Taiwanese subsidiary is established
  11. 2002Yamagata Creative (later JEOL Yamagata) is established
  12. 2008The Lehman shock ends the year with sales of ¥93.9bn and almost no profit

2009–2024Concentrated investment in advanced semiconductor metrology, and VISION 2030

  1. 2009JEOL Datum and JEOL Active are absorbed into the parent
  2. 2011The NMR business is spun off as JEOL RESONANCE
  3. 2019Oi Izumi becomes president and COO; Kurihara Gonemon becomes chairman
  4. 2019JEOL KOREA becomes a wholly owned subsidiary
  5. 2020Integrated Dynamic Electron Solutions, Inc. is acquired outright
  6. 2021JEOL Technics is absorbed; the Musashimurayama plant opens in October
  7. 2022Oi becomes president and CEO; VISION 2030 is set out
  8. 2022JEOL RESONANCE is absorbed, returning NMR to the parent
  9. 2024Sales reach ¥174.3bn with operating profit of ¥27.5bn
  10. 2025Japan Superconductor Technology, Inc. is acquired for its magnet technology
  11. 2025JEOL HOLDING EUROPE SAS is established in France

Founding Story

1949–1971Born of the drive to build electron microscopes in Japan

JEOL began as thirteen people in a borrowed corner of another company's laboratory, set on making in Japan an instrument that at the time only a handful of firms in Germany and the United States could build. Sales of $277,778 (¥100m) in the year to March 1954 had become $31.9M (¥12bn) by the year to March 1971, and by then the electron microscope had pulled three further businesses — industrial equipment, analytical instruments and medical instruments — along behind it.

Founding in Mitaka, and the resolve to build electron microscopes in Japan

The company's origins go back to May 1946, in the immediate aftermath of the war. A group centred on Kazato Kenji (風戸健二)[1], who saw the promotion of science and a nation built on industry as the road back for Japan, began research and development on the electron microscope at Mobara in Chiba Prefecture[2]. After roughly a year and a half of trial work they completed a prototype electron microscope, and in May 1949, with that Mobara record as its foundation, Japan Electron Optics Laboratory Co., Ltd. was established at Mitaka in Tokyo[3] with a staff of thirteen[4] and capital of ¥500,000[5]. It set out as a technology-driven group taking on the domestic manufacture of electron microscopes amid the material shortages and foreign-exchange constraints of the postwar years.

The electron microscope is a measuring instrument that makes observation possible at the nanometre scale, beyond the reach of the optical microscope, and it is indispensable for analysing the structure of metals, semiconductor materials and biological specimens. Around the time of incorporation the company completed the JEM-1 electron microscope[6], and in February 1950 it was recommended by the Ministry of International Trade and Industry as an enterprise to be fostered and developed[7], securing its footing as a domestic electron-microscope maker. In February 1955 it bought the buildings of the Mitaka works, and to open up sales channels it set up offices at Marunouchi in Tokyo and in Osaka and placed an agent in Paris[8], putting in place the bases for expansion. In April 1956 it delivered an electron microscope to the French government's atomic energy research institute, and that order became the opening for exports to more than thirty countries[9]. Demand was expanding on both the basic-research and the industrial-application side, and this was a growth field. Three years after founding, in November 1952, the company entered the industrial equipment field with the completion of a high-frequency induction hardening unit[10], and in August 1956 it entered the analytical instruments field with the completion of a magnetic resonance apparatus[11]. That was the starting point of the analytical instruments business, including NMR spectrometers (核磁気共鳴装置) — the company's first step into what would become the pillar of its later scientific and metrology instruments business[12].

The founder, Kazato Kenji, was a technical officer who had been trained at the Imperial Japanese Naval Engineering College and had served at the Naval Technical Research Institute as manager of an anti-aircraft missile development programme[13]. While sorting through his effects in preparation for demobilisation he looked through a copy of Kuroiwa Daisuke's (黒岩大助) Denshi Kenbikyo (電子顕微鏡, Electron Microscopes, 1942) that he had obtained earlier at Kure, and that was the point of departure for the venture[14]: he staked on the domestic manufacture of the electron microscope the backwardness of Japanese science and technology that defeat had made him feel so keenly. In May 1949, with the help of Ito Yoji's (伊藤庸二) Koden Seisakusho and of Japan Radio Co., with whom he had close ties from his days at the Naval Technical Research Institute, he started the business in a corner of the Japan Radio research laboratory at Kamirenjaku in Mitaka[15]. The English rendering of the company name 日本電子光学研究所 — Japan Electron Optics Laboratory — gave the initials that became the later abbreviation JEOL[16]. The early JEM-1 units were delivered to Yamanashi University, the Institute of Industrial Science of the University of Tokyo and other national and public universities and research institutes[17], establishing the company's standing as a domestic maker of electron microscopes.

The change of name to Nihon Denshi, and listing in Tokyo

In September 1960 the company established Sakura Seiki Co., Ltd. at Akishima in Tokyo (renamed JEOL Technics Co., Ltd. in December 1989 and absorbed into JEOL in April 2021)[18], carving the assembly and volume production of electron microscopes out of the parent. Separating research and development from manufacturing is the standard organisational design for a research-driven venture as it moves to handle volume production of its products.

In May 1961 the company changed its name to Nihon Denshi Co., Ltd. (日本電子株式会社)[19]. Dropping the word optics from the name marked a turn towards an identity as an electronics manufacturer in the broader sense. In April 1962 it raised its capital to $583,333 (¥210m)[20] and listed on the second section of the Tokyo Stock Exchange[21], putting in place a structure for raising money on the public market. Capital, which had started at ¥500,000 at the founding, had been increased almost every year: it stood at $97,222 (¥35m) the year before listing, and reached the listing level after a doubling immediately before the offering[22]. In December of the same year the company established JEOLCO (U.S.A.) INC. (renamed JEOL USA, INC. in April 1993)[23], widening its move into the American market. That it began overseas expansion just thirteen years after founding reflects the fact that the main market for the electron microscope lay in the advanced economies of Europe and North America, where the need for local sales and service bases was high.

In April 1964 the company completed the development building at the Akishima works[24], extending its R&D capacity, and in November of the same year it established JEOLCO (FRANCE) S.A. (renamed JEOL (EUROPE) SAS in April 2005)[25], laying the base for its European business. In June 1966 the head office moved from Mitaka to Akishima[26]; capital had reached $3.1M (¥1bn) in March of that year[27], and in August 1966 the company listed on the first section of the Tokyo Stock Exchange[28], taking its place among the larger corporations. Over the ten years from 1955 to 1965 the workforce grew more than tenfold, from 136 to 1,592[29]. On the product side it completed the Superscope in 1961 and a one-million-volt ultra-high-voltage electron microscope in 1966[30], giving it a full range of electron microscopes from small instruments to large ones. Britain followed in July 1968[31] and Australia in October[32], the English company name was unified as JEOL Ltd. in April 1971[33], and in April 1972 the company entered the medical instruments field with the completion of an automatic biochemical analyser[34] — so that twenty-three years after its founding it had become a manufacturer standing on four axes: electron microscopes, scientific and metrology instruments, industrial equipment and medical instruments.

Read the full history in Japanese →

Notes

  1. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  2. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  3. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  4. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  5. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  6. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  7. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  8. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  9. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  10. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  11. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  12. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  13. 日本電子三十五年史 (Thirty-Five Years of JEOL, JEOL Ltd., 1986)↩
  14. 日本電子三十五年史 (Thirty-Five Years of JEOL, JEOL Ltd., 1986)↩
  15. 日本電子三十五年史 (Thirty-Five Years of JEOL, JEOL Ltd., 1986)↩
  16. 日本電子三十五年史 (Thirty-Five Years of JEOL, JEOL Ltd., 1986)↩
  17. 日本電子三十五年史 (Thirty-Five Years of JEOL, JEOL Ltd., 1986), table 1-2↩
  18. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  19. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  20. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  21. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  22. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  23. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  24. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  25. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  26. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  27. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  28. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  29. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  30. 企業の歴史：明治百年 (Corporate Histories: A Century of Meiji, Keizai Shunju-sha, 1968), the JEOL entry↩
  31. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  32. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  33. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩
  34. JEOL Ltd., annual securities report for the year to March 2025, corporate-history section↩

References & sources

  1. Thirty-Five Years of JEOL, JEOL Ltd., March 1986, including the chapter on the founding and the establishment of Japan Electron Optics Laboratory.
  2. Corporate Histories: A Century of Meiji, Keizai Shunju-sha (1968), the JEOL entry.
  3. JEOL Ltd. (annual securities reports), including the corporate-history section, and Company Yearbook, Nikkei Inc. for the earlier financial years.

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