| 1953 |
Founded in Amagasaki, Hyogo Prefecture. Manufactures and sells industrial gloves for heavy industry manufacturers in the Hanshin industrial zone. |
| 1953 |
Founded Sekiguchi Industries in Amagasaki, Hyogo Prefecture, manufacturing and selling industrial gloves to heavy industry manufacturers in the Hanshin industrial zone. |
| 1953 |
Founded Sekiguchi Industries in Amagasaki, Hyogo Prefecture. Initially manufactured and sold industrial gloves to heavy industry manufacturers in the Hanshin industrial zone. |
| 1962 |
Established as a design and development company. Grew by accepting design and development orders from manufacturers in Keihanshin. |
| 1962 |
Established as a design and development company, founded the Osaka Technical Center, which is now Altner. Accepted design drawings from customers, made copies and binding, and grew by accepting design and development orders. |
| 1962 |
Established as a design and development company in 1962, grew by accepting design and development orders from manufacturers in Keihanshin that supported the high economic growth. Established Osaka Technical Center (now Altner). |
| 1992 |
Celebrating its 30th anniversary. |
| 1992 |
Celebrated the 30th anniversary of the Osaka Technical Center. |
| 1992 |
Celebrated the 30th anniversary of the Osaka Technical Center. |
| 1992 |
30th anniversary of the establishment of Osaka Technology Center. |
| 1998 |
Renamed to Altner Corporation, derived from Art + Partner. |
| 1998 |
Renamed to Altner Corporation, derived from Art (broader than technology) + Partner. |
| 1998 |
Renamed to Altner Corporation. |
| 1998 |
Changed company name to Artner Corporation (derived from Art + Partner). |
| 2017 |
Celebrated its 55th anniversary and changed to the Second Section of the Tokyo Stock Exchange. |
| 2017 |
Celebrated the 55th anniversary and changed to the Second Section of the Tokyo Stock Exchange. |
| 2018 |
Designated to the First Section of the Tokyo Stock Exchange. |
| 2022 |
Celebrated its 60th anniversary and transitioned to the Prime Market of the Tokyo Stock Exchange. |
| 2022 |
Transitioned to the Prime Market of the Tokyo Stock Exchange and celebrated its 60th anniversary. |
| 2022 |
Transitioned to the Prime Market of the Tokyo Stock Exchange, celebrating its 60th anniversary. |
| 2022 |
Transitioned to the Prime Market of the Tokyo Stock Exchange, celebrating its 60th anniversary. |
| 2025 |
Started the medium-term management plan. Engaged in various initiatives to build a foundation for sustainable growth and next-generation growth. |
