1940s
1949.04
Shigeo Hosaka, a former telephone exchange engineer, opens Hosaka Denki Seisakusho in Kamata, Ota-ku, Tokyo, repairing radio receivers and measuring instruments for local factories.
1950s
1952.06
Incorporated as Hosaka Electric Works, Ltd. with eleven employees.
1956
First own product: the HT-1 electromechanical process timer for textile mills.
1960s
1962
Ina Works opens in Nagano Prefecture to make relays and timers.
1968
Listed on the Second Section of the Tokyo Stock Exchange.
1970s
1971
Supplies its first minicomputer-based controller, for a water treatment plant in Kanagawa Prefecture.
1978
The HC-80, Hosaka's first microcomputer controller, enters service in an electric power substation. Controllers of this family remain in service today.
1979
Kunio Hosaka, the founder's son, becomes President.
1980s
1981
Hosaka America, Inc. established in California.
1984
Agreement to supply bed controllers to a manufacturer of intensive-care beds in Leiden, the Netherlands: the beginning of the medical OEM business. Listed on the First Section of the Tokyo Stock Exchange.
1987
Koriyama Works opens in Fukushima Prefecture to make industrial computers.
1989.10
Renamed Hosaka Corporation. The present lowercase wordmark is adopted.
1990s
1991
Hachioji Development Center opens.
1995
Hosaka Europe Ltd. established in Reading, United Kingdom.
1998
The SC-100, first of the SC series of embedded controllers, is released.
2000s
2003
Takahiro Hosaka becomes President.
2004
Hosaka Electronics (Suzhou) Co., Ltd. established in China.
2006
The SC-330M medical motion controller is released.
2008
Hosaka Asia Pacific Pte. Ltd. established in Singapore.
2010s
2011.03
The Great East Japan Earthquake damages Koriyama Works. Production resumes after 24 days.
2015
The SC-340M medical motion and sensing controller and the HS-2100 series of 2U server chassis are released.
2019
Hosaka PSIRT is established. Hosaka Europe opens the Leiden Application Centre.
2020s
2021
The SC-420 railway controller is released.
2022
Moves to the Prime Market of the Tokyo Stock Exchange (April). Ryoichi Tanabe becomes President and CEO (June).
2023
Koriyama Works completes its second production building. The HS-2200 series succeeds the HS-2100.
2025
The HS-2208S short-depth 2U chassis is released.
2026
The Medical OEM Business Division and the Quality Assurance and Product Security Division are established.