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| 1965 | October | Japan Sun Industries opens | |
|---|---|---|---|
| 1972 | February | Omron Taiyo Electric Co., Ltd., established (In 1990, name changed to Omron Taiyo Co., Ltd.) |
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| 1972 | April | Founding | |
| 1975 | June | Crown Prince and Princess visit | |
| 1977 | June | Model PYF, Model PF sockets, Model B2H relay production starts | |
| 1981 | September | No.2 Factory operation starts Model MY4 relay production starts |  |
| 1982 | September | No.2 Factory 2nd extension, Model MY relay secondary processing starts, building of integrated production system for Model MY relay is completed | |
| 1984 | June | Chairman Kazuma Tateishi bust unveiling ceremony |  |
| 1986 | April | Kyoto Omron Taiyo Electric Co., Ltd., founded (In 1990, name changed to Omron Kyoto Taiyo Co., Ltd.) | |
| 1992 | April | 20th anniversary of founding, commemorative ceremony and event held |  |
| 1993 | March | 20th anniversary of establishment of Japan Sun welfare factory commemorated, and Sun Club (break room) opened | |
| 1995 | June | ISO (International Organization for Standardization) 9001 obtained | |
| 2000 | September | Minister of Labor Award received at the 5th Workplace Improvement Contest for Promotion of Employment of Persons with Disabilities ISO14001 certification obtained |
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| 2001 | October | OHSAS (Occupational Health and Safety Management Systems) 18001 obtained |  |
| 2002 | April | 30th anniversary of founding | |
| 2006 | January | Repair service business starts | |
| 2010 | April | Thumb rotor switch business starts | |
| 2012 | August | 40th anniversary of founding & 4th operations wing completion commemorative ceremony held |  |
| 2014 | April | Trigger switch production starts | |
