- JUNE 1963
- Hirokazu Komatsu individual establishment of a business in Okaya-shi, Nagano.
- OCTOBER 1966
- Hirokazu Komatsu assumption of office for juridical person reorganization "Okaya Seiki Institute
Representative Director Ltd.". Capital 300,000 yen.
- AUGUST 1972
- Yokohama factory establishment in 12-4, Torihama-cho, Kanazawa-ku, Yokohama-shi.
- AUGUST 1977
- Increasing the capital to capital 3,000,000 yen
- OCTOBER 1977
- Main office factory new establishment
- APRIL 1978
- Increasing the capital to capital 10,000,000 yen
- MARCH 1982
- Increasing the capital to capital 35,000,000 yen
Main office factory new move in 1-13-11. Kawagishikami, Okaya-shi, Nagano.
Transfer Yokohama plant equipment to main office factory with main office factory new construction.
The Yokohama factory assumes it a Yokohama branch and plans reinforcement of the business.
- JUNE 1982
- Assuming it organization change "Okaya Seiken Co., Ltd.".
- DECEMBER 1985
- Yokohama branch new move in 3-12, Torihama-cho, Kanazawa-ku, Yokohama-shi
- JUNE 1988
- 25th Anniversary ceremony "Okaya Seiken Co., Ltd.". establishment
- APRIL 1991
- Build Akita factory82, Yahagi, Niida, Jyumonji-machi, Akita
- MAY 1991
- Akita factory new establishment ceremony to celebrate the completion
- APRIL 2001
- For the Akita factory production capacity reinforcement, I enlarge a building
- FEBRUARY 2002
- It is the local corporation establishment in OKAYA VIETNAM Vietnam Ho Chi Minh City
Capital US$ 1,400,000
- OCTOBER 2002
- Borrowing the part of the OKAYA VIETNAM NIDEC TOSOK VIETNAM factory and operate it and start
- MARCH 2004
- Increasing the capital to capital 41,000,000 yen.
- JUNE 2004
- OKAYA VIETNAM ISO9001 certification acquisition
- OCTOBER 2004
- It is a factory new move in OKAYA VIETNAM Ho Chi Minh City TAN THUAN EPZ
- SEPTEMBER 2005
- OKAYA VIETNAM ISO14001 certification acquisition
- FEBRUARY 2007
- ISO9001:2000 certification acquisition
- JUNE 2008
- Mitsuaki Komatsu light assumption of office for Representative Director move in 3-12, Torihama-cho, Kanazawa-ku, Yokohama-shi at the main office
- APRIL 2011
- 20th anniversary ceremony Akita factory opening
- SEPTEMBER 2011
- OKAYA VIETNAM Increasing the capital to capital US$ 1,600,000-
- FEBRUARY 2012
- 10th Anniversary of establishment, OKAYA VIETNAM Building second plant
- OCTOBER 2012
- 10th anniversary ceremony OKAYA VIETNAM
- JUNE 2013
- 50th Anniversary ceremony "Okaya Seiken Co., Ltd.". establishment
- APRIL 2016
- "Okaya Seiken Co., Ltd." main office new building completed
- MAY 2016
- Commendation received from Mayor of the City of Yokohama as good industrial business establishment Okaya Vietnam Co., Ltd.
- SEPTEMBER 2016
- OKAYA VIETNAM Increasing the capital to capital US$ 1,800,000-
- JUN 2018
- Mitsuaki Komatsu assumed office as Chairman & CEO.
Kouichi Masuda assumed office as President.
- OCTOBER 2018
- Akita Factory expanded to boost production
