Company
History
| 1935 | Mar. | Established Toyomori Kogyo Limited Partnership at 4-10, Umayabashi, Honjo Ward, Tokyo, and began manufacturing metal gears. |
|---|---|---|
| 1936 | Jun. | New factory built in Oharacho, Itabashi-ku, Tokyo and relocated. |
| 1937 | Apr. | Converted to manufacturing polished nuts and manufactured polished nuts for aircraft for wartime demand. |
| 1946 | Apr. | With the end of the war, switched to the manufacture of polished nuts for bicycles, agricultural machinery, and communication equipment. |
| 1950 | Mar. | Started business with Honda Motor Co., Ltd. for motorcycle nuts and special screw parts (established in 1948) with the opening of its Tokyo Plant (Kami-Jujo). |
| 1962 | May. | Established Toyo Seiki Kogyo Co., Ltd. with capital of 6 million yen. |
| 1966 | Oct. | Toyo Seiki Kogyo Co., Ltd. absorbs Toyo Seiki Kogyo Limited Partnership with capital of 12.5 million yen. |
| 1974 | Nov. | Capital increased to 20 million yen. |
| 1977 | May. | Developed plastic working technology for pipe materials based on proprietary know-how and entered into manufacturing and sales of pipe products. |
| 1980 | Mar. | Pipe working (horizontal hydraulic press) is introduced to expand production capacity. |
| 1982 | Nov. | Capital increased to 28 million yen. |
| 1983 | Feb. | Increased capital to 48 million yen and built the Shin-Shirakawa Plant in Nishigo-mura, Nishi-Shirakawa-gun, Fukushima Prefecture. |
| 1985 | Nov. | Ceremony held to commemorate the 50th anniversary of the company’s founding. |
| 1986 | Jan. | Built a new administration building at the Shin-Shirakawa Plant |
| Oct. | Increased capital to 80 million yen and reconstructed the main factory and product management building. | |
| 1987 | Nov. | Building was added to the Shin-Shirakawa Plant and a precision parts processing line was installed. |
| 1994 | Oct. | Developed “Guaranteed Screw Right Angle Nut” and started production after verification testing. |
| Dec. | Nikkei Mechanical (now Nikkei Monozukuri) introduces the nut as “Japan’s world’s best. | |
| 1997 | Sept. | Patent application filed for the manufacturing method of the same nut as “manufacturing equipment for high precision density nuts”. |
| 1999 | Oct. | Shin-Shirakawa Plant ISO9002 certification obtained from P.J.R. |
| 2000 | Dec. | Main Factory ISO9002 certification obtained from P.J.R. |
| 2002 | Apr. | Shin-Shirakawa Plant Completed upgrade from ISO 9002 to 9001 |
| May. | Installed two NC benders with robots at Shin-Shirakawa Plant | |
| 2003 | Nov. | Acquired ISO14001 company-wide |
| Dec. | Main Plant Completed upgrade from ISO 9002 to 9001 and integrated certification of the Head Office and Shin-Shirakawa Plant. | |
| 2005 | Feb. | Held ceremony to commemorate the 70th anniversary of the company’s founding. |
| Apr. | Completed construction of new main plant | |
| Aug. | Complete relocation of the former Itabashi head office and factory to the new head office and factory (Sakado City, Saitama Prefecture), which was completed in April. | |
| 2007 | Jan. | Established a new complex process of rolling machine and bender with robot at the head office plant. |
| 2009 | May. | Certificate of Appreciation from Saitama Prefecture as an internship promotion project host company. |
| 2010 | Mar. | NC vendor with robot installed at Shin-Shirakawa Plant relocated to Head Office Plant |
| Aug. | Joined Japan Auto Parts Industries Association | |
| Sept. | Designated as “Sainokuni Designated Factory” by Saitama Prefecture | |
| 2012 | Jun. | Installed a press with a robot at the head office plant to automate the pressing process (our first). |
| 2015 | Mar. | Celebrated the 80th anniversary of the company’s founding. |
| 2016 | Sept. | Completion of ISO 9001 and 14001 certification to the 2015 version |
| 2018 | Jul. | Introduction of 3D printer (for resin) |
| Sept. | Video conferencing system introduced between headquarters and Shin-Shirakawa Plant. | |
| 2019 | Jul. | Started business with Mitsubishi Electric Corporation. |
| 2020 | Apr. | Construction of a new building for the Shin-Shirakawa Plant begins. |
| Oct. | Recognized by the Ministry of Economy, Trade and Industry as a “Regional Future Leading Company | |
| 2021 | Apr. | Phase I construction of the new Shirakawa Plant building completed; moved from the old building |
| Apr. | Began doing business with Hitachi Astemo, Ltd. | |
| 2022 | Sept. | Phase II construction of the new Shin-Shirakawa Plant building completed New Shin-Shirakawa Plant completed |
Contact
For more information about our products, please contact us from the following link.