Company history

Kyocera began in April 1959, when Kazuo Inamori — a twenty-seven-year-old engineer who had spent years developing alumina and forsterite ceramics at the old Kyoto porcelain maker Shofu Industries — struck out on his own and founded Kyoto Ceramic. Backers from the Kyoto business establishment, led by Otoya Miyaki of Miyaki Electric, put up the money on the strength of his technical skill; the capital was $8,333 (¥3m), and in an arrangement unusual for a founder-engineer, Inamori held only the fourth-largest block of shares. What he had instead was a product: the “U-shaped Kelcima,” an insulating part for cathode-ray-tube televisions, which he put into large-lot production — some 200,000 units a month for Matsushita — almost at once.

That early volume made Kyocera profitable from its second year and fixed its pattern: an engineer with technology but neither capital nor a name would earn his standing first, in mass production, and take the initiative from there. Shut out of Japan’s big electronics makers as an unknown Kyoto upstart, Inamori did the counter-intuitive thing and went abroad, reasoning that if the American customers who originated the technology adopted his parts, domestic buyers would follow. Years of dogged sales trips — made while the company still had fewer than a hundred employees — paid off in 1966 with a large order of IC alumina substrates from IBM, and the American endorsement flowed back to open the Japanese market.

The decisive move was to build ahead of demand. In 1969 Inamori put up a plant in Sendai, Kagoshima, to mass-produce multilayer ceramic packages — a risky investment made before the market was visible — and followed it with a second Kagoshima plant in 1971. The high-temperature firing know-how folded into those lines became a barrier rivals could not copy, and it carried Kyocera from a Kyoto small-fry to a world power: by 1983 the company held roughly 70% of the world market for IC packages. A bet placed when demand could not yet be seen had turned into the imitation-proof advantage that would underwrite the core business for decades.

Kyocera listed in 1971 — first in Osaka, then on the Tokyo Stock Exchange in 1972 — just as the core business was exploding: revenue leapt from $18.1M (¥7bn) in the year ended March 1972 to $250.2M (¥50bn) six years later. The float and the retained profit gave Inamori a war chest, and he spent it on acquisitions. Through the 1980s Kyocera absorbed a string of firms — a 1982 four-company merger brought the rename to Kyocera — and pushed into optics and cameras, telecommunications and office equipment, and, by taking the US capacitor maker AVX in 1990, into electronic components worldwide.

Two things ran underneath the spree. One was that Inamori carried his appetite for the improbable outside the company itself: in 1984 he personally helped found DDI, a start-up carrier that took on the state-scale monopoly NTT and eventually became KDDI. The other was less flattering — the diversification never earned like the core. In the mid-1990s the ceramics operations alone threw off tens of billions of yen in profit while the optics business ran at a loss and electronics returned little, so that the founding trade quietly subsidised the chronic weakness of everything bought around it, a two-tier structure that would shadow Kyocera for decades.

The graver problem was that the founding advantage was being eroded from the inside. Across the 1990s the semiconductor-package industry shifted from ceramic to resin; the Gifu rival Ibiden read the change early, developed resin packages, and by 1996 was supplying Intel and leading the new market. Anchored to ceramics, Kyocera was slow to follow and watched its commanding share of CPU packaging drain away to the resin makers — the mass-production barrier it had built with such care simply did not function once the material itself changed.

The clearest test of the playbook came in April 2008, when Kyocera bought the mobile-phone business of a struggling Sanyo Electric for about $483.9M (¥50bn) and set out to fix it the Inamori way, with Amoeba management’s fine-grained cost control. It did not work. The worldwide rise of the smartphone made the entire feature-phone hardware market evaporate within a few years, and no amount of cost discipline could answer a paradigm shift that erased the market itself — Amoeba was superb at improving the economics of a business that existed, and close to powerless when the business was disappearing.

What followed was a long rebuild around two pillars — electronic components, and the document-solutions business grown out of Kyocera Mita — with production pushed out of Japan to hold costs through a strong yen: manufacturing in China from 1995, then Vietnam from 2011. The acquisitions never stopped, reaching into document software (Germany’s OPTIMAL SYSTEMS in 2020, for about $134.9M (¥14bn)) and optical devices (Soraa Laser Diode in 2021). But breadth did not buy stability: in the year to March 2024 weak electronic-component sales pulled the whole group into lower revenue and profit, with impairments in the semiconductor-package operations — the founding pillar visibly wobbling in the numbers.

Beneath the portfolio moves ran a harder question of governance. Inamori had built a high-margin company on instinct and drive, running it without deliberate mid-term plans — and after he left the chairmanship in 1997, Kyocera had to replace that personal gravity with institutional management. Hideo Tanimoto, president from 2017, framed the task as “evolving the founder’s teachings”: keeping Amoeba management and the philosophy while digitising the artisanal firing know-how that had lived in individual hands, so that a company built on one man’s intuition could be run on systems.

For its whole listed life Kyocera had grown by buying — using the core business’s profit to add more businesses. Now it turned the other way, into a seller. Confronting the 2024 downturn, management imposed numerical ROIC targets business by business and began sorting what to keep from what to shed: in 2026 it agreed to hand its chemical business to Sumitomo Bakelite and moved to let go of its silicon-diode and power-semiconductor operations and the Southern Carlson distribution arm, concentrating resources on the ground around advanced semiconductors, mobility, and power circuitry for AI.

In April 2026 the leadership passed from Hideo Tanimoto to Shiro Sakushima, installing the team that would carry out the sorting. The move completes a long arc: a company whose founder created extraordinary value by betting capital and conviction ahead of demand, and which spent the decades after his exit learning to run on ROIC discipline and institutional plans rather than one man’s nerve — now defined less by what it will buy next than by what it is willing to give up.