| Year | Detail |
| 1949 |
Nippon Electrical Equipments Co. Ltd later changed its name to NIPPONDENSO CO. LTD. split from Toyota Motor Co. Ltd. and was established as a separate entity. |
| 1953 |
The company collaborated with Robert Bosch GmbH. |
| 1955 |
Established the Injection pump preparation section. |
| 1965 |
Started operations at Ikeda Plant and Hiroshima Plant. |
| 1971 |
Established NIPPONDENSO OF LOS ANGELES INC. |
| 1972 |
Established NIPPONDENSO (AUSTRALIA) PTY. LTD. and NIPPONDENSO THAILAND CO. LTD. |
| 1991 |
Opened DENSO Research Laboratories. |
| 1996 |
The company name was changed from NIPPONDENSO to DENSO. |
| 2005 |
Established DENSO Training Academy Thailand. |
| 2023 |
Koito and Denso collaborated to develop system to improve the object recognition rate of vehicle image sensors. |