| May 1933 |
Tateisi Electric Manufacturing Co. established in Osaka. |
| Production of X-ray timers begins. |
| June 1945 |
Production moved to Kyoto after main factory in Osaka is destroyed by fire during WWII. |
| May 1948 |
Company name changed to Tateisi Electronics Co.; Kazuma Tateisi assumes role of president. |
| January 1959 |
Company motto and "OMRON" trademark established. |
| February 1960 |
World's first non-contact (solid state) switch developed. |
| October 1960 |
Central R&D Laboratory completed in Nagaokakyo, Kyoto. |
| April 1964 |
World's first automated traffic signal developed. |
| March 1967 |
World's first unmanned train station developed. |
| November 1968 |
OMRON Tateisi Electronics Co. established as company's official English name. |
| June 1971 |
World's first online automated cash dispenser developed. |
| February 1972 |
OMRON Taiyo Electronics Co., Japan's first factory for workers with disabilities, jointly established with Japan Sun Industries. |
| 1983 |
Sales of Ken-on-kun thermometer begin. |
| April 1986 |
Ayabe Factory established in Ayabe, Kyoto. |
| North American regional management center established in the United States (OMRON Management Center of America, Inc.) |
| September 1988 |
European regional management center established in The Netherlands (OMRON Europe B.V.) |
| October 1988 |
Asia Pacific regional management center established in Singapore (OMRON Asia Pacific Pte. Ltd.) |
| January 1990 |
Company name changed to OMRON Corporation. |
| May 1994 |
Greater China regional management center established in Beijing, China (OMRON (China) Co., Ltd.) |
| Achieved complete phase out of CFCs (freon). |
| 1995 |
Distance warning system for motor vehicles developed. |
| 1998 |
Machine capable of identifying counterfeit notes in various currencies developed. |
| April 1999 |
Internal company system established to separate management oversight and business operations.
Mishima Factory achieves zero emissions. |
| May 2003 |
Global R&D hub " Keihanna Innovation Center " established in Soraku-gun, Kyoto. |
| June 2003 |
Yoshio Tateisi becomes Chairman, Hisao Sakuta named President & CEO. |
| May 2004 |
Face recognition technology for mobile phones developed. |
| May 2006 |
OMRON Principles established. |
| May 2006 |
Global design/production center for control devices begins operations in Shanghai, China. |
| March 2007 |
OMRON ramps up development of safety business (machine safeguarding). |