- 1917Yokohama Rubber Manufacturing founded with ¥2.5m capital, Japan–US 50:50
- 1921First factory built at Hiranuma, Yokohama
- 1923Great Kanto Earthquake halts Hiranuma; 24 employees killed
- 1929Second Yokohama plant rebuilt at Tsurumi
- 1931Original-equipment tyres supplied to Ford Japan and GM Japan
- 1938Toyo Tire & Rubber established with Toyobo
- 1942Army entrusts the company with a plant in occupied Singapore
- 1943Mie plant built in Watarai-gun (now Ise)
- 1945Air raids burn out 90 per cent of the Yokohama works; head office moves to Tokyo
- 1946Mishima plant opened in Shizuoka
- 1949Technical tie-up with B.F. Goodrich revived
Yokohama Rubber began in October 1917 as an equal joint venture between a Furukawa-group cable maker and B.F. Goodrich of the United States, formed to make at home the high-grade rubber goods Japan was buying abroad. Within thirty years it had lost its production base twice over — to the Great Kanto Earthquake and then to the air raids of 1945 — so that the technology tie-up revived in 1949 and the listing that followed read less as expansion than as a third attempt at building the same company.
B.F. Goodrich, brought in as a cable maker's diversification
The parent of Yokohama Rubber was Yokohama Electric Wire Manufacturing (now Furukawa Electric), which made the rubber used to sheathe electric cable. That firm began in 1884 as a private business founded in Yokohama by Yamada Yoshichi (山田与七); producing paraffined telegraph wire, cotton-wound wire and lighting wire, it was Japan's first insulated-wire works, and it later passed under the capital of Furukawa Gomei, the supplier of its copper wire, and so into the Furukawa group. In 1917 Nakagawa Suekichi (中川末吉), later president of Furukawa Electric, is said to have identified the rubber industry as a promising one and to have planned the domestic manufacture of high-grade rubber goods. Japan at that time was modernising its steel, electric power and machinery industries, and demand for industrial rubber goods — belting, hose, motor tyres — was expanding rapidly, yet most of it was met by imports from abroad. The plan carried both an industrial-policy meaning, raising a new domestic producer, and a corporate strategy: diversifying the Furukawa group out from cable into the neighbouring rubber products.
As it looked for a technology partner, its aims coincided with those of B.F. Goodrich of the United States, which kept an office in Japan and intended to build a manufacturing establishment in the Orient. In October of the same year the two companies established, on equal shareholdings and with capital of ¥2.5 million, the joint venture Yokohama Rubber Manufacturing Co. (横濱護謨製造株式会社) at Uratakashima-cho, Yokohama, Kanagawa, with Nakajima Kumakichi (中島久萬吉) as its first chairman of the board. Each side held 50 per cent, and the memorandum they exchanged is recorded as dividing the work so that Goodrich supplied the technology and the Furukawa side ran the business; from its founding, then, the company carried a two-legged structure combining foreign technical strength with domestic managerial control. Its stated objects included the import and sale of tyres and industrial goods, and it was given the position of a starting point for ending the Taisho-era dependence on imported high-grade rubber goods, and of the nucleus of a Furukawa-group tyre maker.
Two losses of the production base: the Great Kanto Earthquake and the war
In 1921 the company built its first factory at Hiranuma in Yokohama and began full production of belting, hose, packing and cord tyres. Then, in September 1923, the Great Kanto Earthquake destroyed the Hiranuma works completely; operations were suspended at the cost of 24 employees killed, and the head office moved to Kojimachi-ku, Tokyo (now Chiyoda-ku) to wait for a chance to start again. Having lost its production base barely six years after its founding, the company went through what amounted to a period of suspension, scraping by for a time on selling goods imported from Goodrich, and the work of starting the business that it had built up before the war was set back by the earthquake. Seen from Goodrich, its joint-venture partner, rebuilding the Japanese base had likewise become a management problem.
In 1929 it rebuilt a second Yokohama plant at Heian-cho in Tsurumi-ku, put on track the volume production of industrial rubber goods — hose, belting, packing — and of motor tyres, and by 1931 had managed to win original-equipment tyre orders from Ford Japan and General Motors Japan. A threefold expansion followed in 1934, and the production base lost in the earthquake had broadly been recovered. In 1938 the company tied up with Toyobo to establish Toyo Tire & Rubber, taking its first step overseas. After the Sino-Japanese conflict began the rubber industry was absorbed into the war economy: starting in 1942, when the army entrusted it with running an existing plant in Japanese-occupied Singapore, the plants it built across South-East Asia came to number 16.
In April 1945, however, in the last months of the war, American air raids burned out 90 per cent of the Yokohama works, and the five overseas plants it had spread from the continent to South-East Asia — in China, Korea, Vietnam and the Philippines — were without exception abandoned in the fighting, forcing on the company a second start from zero after the earthquake. The head office moved again that same month, to Minato-ku, Tokyo, and it was driven into a position of having to draw up a plan for post-war reconstruction. The production network that had swollen under war demand to an unprecedented size collapsed at a stroke with the surrender, in the home islands and in South-East Asia alike; even so, by March 1947 the company had managed to restore and re-equip the plants that remained, at Mie and Mishima, and so barely secured the first footing of its post-war rebuild.
Restarting: from burnt-out plants to a revived American technology tie-up
In the confusion after the war the company set about restarting its business on the plants that had escaped the fires, at Mie, Mishima and Ageo. The Mie plant had been built during the war, in August 1943, in Watarai-gun (now Ise); having been spared, it became the first footing of post-war production. In March 1946, immediately after the surrender, the company opened a new plant at Mishima in Shizuoka, giving it the role of supplementing part of the production capability of the Kanto region, and with it began rebuilding its production network for the recovery years. Giving up a return to Hiranuma in Yokohama, its pre-war home, was in effect the groundwork for the later strategy of concentrating at Hiratsuka, and can be judged a management decision that also worked as the occasion for reviewing the dispersal of the Kanto plants. It was a moment in which the experience of losing factories twice before the war became the driving force that shaped the post-war strategy for its sites.
In December 1949, as the dissolution of the zaibatsu loosened Furukawa's control, the company revived the technical tie-up with B.F. Goodrich that the war had cut off. A company created to end import dependence and to carry domestic manufacture was setting out again, after war damage and the zaibatsu dissolution, still from a position of needing American technology; resuming that technical relationship with a major American maker, severed during the war, was an important moment that became the foundation of the post-war catch-up in quality. Six months later, in April 1950, its shares were listed on the first sections of both the Tokyo and Osaka stock exchanges, securing a route to raise money from the market during the recovery years and setting a firm financial base under its steps as an independent listed company. The listing gave it the financial backing it needed to build once more the production base the war had taken away.