The story
The company can be traced back to 1922, when the Takata Motor Research Institute began carrying out research into various forms of internal combustion engines. Research and development of high-speed, portable engine generators and radio-controlled generators began immediately; these were brought to production in 1930. During the 1930s and 40s, Tohatsu consolidated its product line and moved its corporate office to Tokyo. Among its products in the 1930s were railcars for the Ministry of Railways.
In 1950, production and sales of motorcycles began. 1955 brought aggressive growth to Tohatsu. Capital increased to 150 million yen and production on a new line of engines started. Sales offices were established in Fukuoka, Nagoya, Tokyo, Sendai and Sapporo. Dealerships were set up throughout Japan.
In the mid-1950s, the company held the top market share, with 22 percent of the Japanese motorbike market. They also manufactured racing motorcycles and achieved success in Japan and abroad. Financial problems led to the discontinuation of Tohatsu motorcycle production in 1964.
From Wikipedia’s article on Tohatsu, shared under CC BY-SA 4.0.4