Nitto Denko: long-term performance & turning pointsSales (revenue) and profit-margin ratio
Sales (¥ bn)Net margin (%)
1918One product, one customer
Revenue (¥ bn, bars) · net margin (%, line)
Source: securities reports
1918Founded in Osaki, Tokyo — insulating varnished cloth and paper, 14 employees
1930Hitachi begins making varnish in-house; founder Inamura dies
1937Hitachi acquires 100% of the shares
1941Ibaraki plant acquired — a base in western Japan
1945Osaki works destroyed by air raid; Ibaraki alone survives
1948Hitachi sells out under the zaibatsu dissolution — independence
The First World War cut Japan off from European electrical insulating materials, and in October 1918 Inamura Tojiro took over a small insulation workshop in Osaki, Tokyo and incorporated it as Nitto Electric Industrial with ¥200,000 of capital and fourteen employees. It made varnished cloth and varnished paper for the heavy-electrical makers — above all Hitachi. The company existed because an import had stopped, which meant its demand was, from the first day, one product sold to a very few buyers.
That structure came due around 1930, when Hitachi began making its own varnish. Orders collapsed; Inamura died the same year. In May 1937 the customer rescued the supplier by buying 100% of the shares, and Nitto became a wholly owned Hitachi subsidiary — an independent maker turned into an arm of its own client within twenty years of founding. In December 1941 it bought a varnish-paint works at Ibaraki, near Osaka, its first foothold outside Tokyo.
War then decided the geography. An air raid in May 1945 destroyed the Osaki works, leaving Ibaraki as the only plant; the head office followed to Ibaraki in July 1946. In July 1948 the zaibatsu dissolution forced Hitachi to sell its holding, and Nitto was independent again — not by its own choice, and owning little beyond the ability to make insulating paper and coatings. The task it carried out of the war was to stop being a one-product company selling to one customer.
1950Dry-cell batteries under the Maxell name; then recording tape
1951Japan’s first vinyl adhesive tape
1961Maxell spun off and sold to Hitachi
1962Listed on the Tokyo and Osaka exchanges
1965Semiconductor encapsulation materials
1968Nitto Denko America — first overseas base
1973Flexible circuit boards; oil shock cuts sales
Rebuilding, Nitto pushed its coating know-how outward. Dry-cell batteries began in August 1950 under the Maxell name, followed by recording tape; in April 1951 the company developed Japan’s first vinyl tape, and in 1957 black tape. The chemistry of the pre-war varnish had been carried onto petrochemical polymers, and adhesive tape — a technology with almost unlimited end uses — became the second pillar beside insulation.
Then, in 1960, it separated the consumer side. The battery and magnetic-tape division was spun out as Maxell Electric Industrial and sold to Hitachi in February 1961; renamed Hitachi Maxell in 1964, it grew into a cassette-tape brand every household knew and listed its shares in 1977, with Nitto keeping a 6.7% stake. Nitto had built a consumer business and handed it to its former parent — the cost of building a retail sales channel from nothing, traded for depth in industrial materials.
The direction was then fixed. Nitto listed in Tokyo and Osaka in August 1962 and became, permanently, a business-to-business materials maker: semiconductor encapsulation compounds (1965), a US sales arm in 1968, flexible printed circuits under licence from Sanders of the US in 1973. It sold what only its customers’ engineers ever saw — and when the 1973 oil shock hit, sales fell in the year to March 1975, showing again how completely its results depended on other manufacturers’ cycles.
1999Onomichi LCD-materials plant; Korea Nitto Optical
2005Optical subsidiaries in Taiwan, Shanghai — following the panel makers
The answer to that dependence was a rule. From about 1975 president Hijikata Saburo ran the “three-new” programme (sanshin): products launched within the past three years had to account for at least 30% of sales, and R&D had to hold near 5% of revenue. It was not retrenchment but the opposite — a permanent, self-imposed obligation to generate growth internally rather than wait for the customer industries to recover. In 1978 the search was narrowed to four fields: electronics, medical, anti-corrosion and membranes, which framed the portfolio for the next forty years.
The new products of these years were started long before their markets existed. Polarizing film for liquid-crystal displays began in April 1975 and polymer separation membranes in April 1976, when seawater desalination was still dominated by evaporation; high-priced ultrapure water for semiconductors and LCDs carried the membrane business until desalination arrived. The 1987 purchase of Hydranautics in the US bought an international brand in reverse-osmosis membranes, and in September 1988 the company dropped “Electric Industrial” from its name to become simply Nitto Denko.
Then the display boom made the 1975 bet the main business. The Onomichi works opened in January 1999 as a dedicated LCD-materials plant, and subsidiaries followed the customers across East Asia — Korea (1999), Taiwan (2003), Shanghai (2005) — with a flexible-circuit plant in Shenzhen in 2004. Building next door to the panel makers won on delivery and quality, and it became Nitto’s standard overseas pattern. Consolidated sales roughly doubled from ¥338.9bn in the year to March 2002 to ¥745.2bn by March 2008; the head office moved to Kita-ku, Osaka in January 2006.
2009Lehman shock — sales down 22.4%, operating profit down 82%
2011Acquires Avecia (US) — nucleic-acid medicine CDMO
2013Takasaki Hideo becomes president; the niche-top strategy
2016inovas R&D centre at Ibaraki; BMS licence for an organ-fibrosis drug
2017Large-panel polarizer technology licensed to Hangzhou Jinjiang
2022Bend Labs and Mondi’s personal-care business acquired
2025Revenue passes ¥1 trillion in the 107th year
Concentration in electronic materials proved as dangerous as concentration in one customer had been. Under Nagira Yukio, appointed in June 2007, the Lehman shock cut sales 22.4% to ¥577.9bn in the year to March 2009 and operating profit from ¥77.9bn to ¥13.8bn. Recovery came, but not back to the peak, and reducing dependence on LCD polarizers became the central question. The answer was bought rather than invented: Avecia Biotechnology of the US in February 2011 took Nitto into oligonucleotide contract manufacturing — nucleic-acid medicine — and a 2016 exclusive global licence with Bristol-Myers Squibb for an organ-fibrosis drug deepened the pipeline.
Takasaki Hideo, president from June 2013, gave the reflex a name: the niche-top strategy. Enter the volume zone, he argued, and you are in a price war; so stay with top-tier customers in niches you lead. In November 2017 Nitto acted on it in the starkest possible way — licensing its large-panel polarizer manufacturing technology to China’s Hangzhou Jinjiang Group and affiliates for up to five years and roughly $133.7M (¥15bn) in fees, and withdrawing by stages from the commoditised product in which it held roughly 40% of the world market. Sales of ¥857.4bn and operating profit of ¥125.7bn in the year to March 2018 were records set as the company was walking away from what produced them.
The proceeds went into the next mountains. Bend Labs (flexible sensors) and the personal-care business of London-listed Mondi plc were both bought in 2022, adding nonwovens and functional films and thickening the European base. In the year to March 2025 consolidated revenue passed ¥1 trillion for the first time, at ¥1,013.8bn, with a record ¥185.7bn operating profit — in the company’s 107th year. Whether each handover pays still depends on the same race: at the time of the polarizer licence, optronics supplied about 70% of operating profit and the medical business only ¥44.4bn of sales against a ¥300bn goal.
What is left after a bond that policy, not choice, untied
From the moment it handed every share to its customer in 1937, this company was inside its client. Eleven years later the bond was untied not by its own will but by a post-war policy — the dissolution of the zaibatsu. A company that had lost Osaki to the air raids and was down to the single Ibaraki plant held, at the moment of independence, nothing beyond the ability to make insulating paper and coatings. Japan’s first vinyl tape, in 1951, looks like the first result of transferring that ability onto petrochemical polymers. An independence imposed from outside seems to have worked as the motive to go looking for products of its own.
Yet cutting the capital tie did not cut the ties of trade and competition. In 1961 Nitto sold the battery and magnetic-tape division it had raised itself to Hitachi, and the former parent became the buyer of its consumer business. As vice-president Hijikata Saburo said in a 1973 lecture, the company was by then in complete competition with Hitachi Chemical in insulating materials — facing, in the same market, the group whose capital it had once taken. Independence meant only that ownership had changed; becoming a company that did not depend on one product and one customer took another decade and more.
On handing a business you raised to your former parent
The dry cells and recording tape begun in 1950 were still growing products when they were let go. No record survives of the participants explaining the separation, but set the fact that the Suita coatings plant and the Maxell division’s Senrioka plant were built one after another within about a year against the fact that tapes made up 68% of sales in fiscal 1967, and it looks like a choice about where to put limited money and people. It reads as a decision to put down the burden of building a consumer sales channel from scratch, in exchange for going deeper into industrial materials.
That said, the interest in consumer goods did not die. Eleven years after the separation, in 1972, the company was still talking about tape-based ornaments and household goods, and the following year about a Ginza sales floor and a target of ¥1bn a month. Even so the sales mix did not come back: 28% to the electrical-machinery industry, more than 70% to general industrial materials. The division it let go grew into Hitachi Maxell, a brand known in every home, while the side that stayed went on stacking volume in materials on which only the customer’s name ever appears. It can be read as the fork at which two roads diverged from the same adhesive technology.
What distinguishes this decision is that it was not a retrenchment forced by financial crisis but the institutionalisation, as a permanent management discipline, of a mechanism for producing new products continuously. When the oil crisis shook sales to manufacturers, Hijikata Saburo imposed on himself not cuts to headcount or businesses but a numerical target — products launched within three years to make up 30% of sales — and a promise to spend about 5% of sales on R&D. The cross-functional SPG organisation was the device that turned that discipline daily in development and in the field. He was trying to build a constitution that did not entrust results to the business cycle, out of internal development capacity rather than external demand.
The discipline of deliberately setting oneself a figure of 30% stayed with Nitto Denko for a long time. The 1988 change of name expressed the shift from a specialist in electrical insulating materials to a functional-materials company. The polarizing film whose volume production began in 1975 grew, thirty years on, into an LCD polarizer business with a world-leading share. The later strategy of staying close to top-tier customers, avoiding price competition and taking the top position in a niche, is an extension of the same refusal to let renewal lapse. How far a self-imposed number can sustain the changing of the old for the new — on that question, the three-new programme left half a century of one answer.
The accounts of a business begun before its market
When membrane production began in 1976, the seawater desalination market did not exist. Evaporation was the mainstream, and membranes were inferior both in salt rejection and in the cost of the water produced. What allowed it to continue was a high-priced application — ultrapure water for semiconductors and LCDs — that made an immature membrane pay, and it appears that being a company with electronic materials is what supported the water business. Vice-president Hijikata Saburo’s 1973 view that a thin membrane could serve medicine, pollution control and electronics alike proved right in the sense that breadth of application bought time.
That said, the company it bought was not ready for duty. Hydranautics was tied down in sales by a patent dispute and was still losing money in 1993, six years after the acquisition. Given that its American connections told in a large Australian project only once the constraints lifted, it took more than twenty years for the value of that purchase to appear. Reverse-osmosis membranes came off basic patent in 1999, and their dimensions are set by an industry standard — a commodity form. Set against the fact that China’s Vontron has claimed comparable salt-rejection figures, leadership in desalination looks less like technical superiority itself than something preserved by never stopping the updates.
Reading the moment to hand over the world’s best product
Second or third place promises no real profit — president Takasaki Hideo’s way of putting it shows a stance that measures a business by profit rather than share. Judged by that standard, the polarizer business begun in 1975 and grown to roughly 40% of the world market was, in large panels, no longer worth defending. It looks like a judgement in which two readings coincided: that not handing it over meant being ground down in a price war, and that it should be handed over while it still commanded a fee. That a president some generations earlier had said the technology should simply be sold, and that a later president came round to handing part of it over, likewise shows how the assessment of the same product changes with the time.
That said, transferring the technology did not immediately move the concentration of earnings. About 70% of fiscal 2017 operating profit still rested on the optronics business centred on LCD components, and medical sales were $407.9M (¥44bn) in fiscal 2016 — far from the ¥300bn targeted for fiscal 2025. What the company that passed ¥1 trillion in revenue in the year to March 2025 now stands on cannot be explained by this one act alone. A decision to let go of the mainstay has, by its nature, to race the speed at which the next mainstay grows.
Each heading links to the full Japanese analysis — background, decision and outcome, with sources.
This is a condensed English edition. The full, source-by-source history — with the detailed narrative, financial tables, shareholders and executives — is maintained in Japanese: 日本語版（詳細）— Nitto Denko full history in Japanese →
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