Mar, 2024
Appointed Kubo Shunitsu as President(6th)
Jan. 2024
Recognition of No Disaster Record, First Class, granted by the Director of the Labor Standards
Bureau, Ministry of Health, Labour and Welfare
Achieved a no disaster record of 7 million hours.
Dec. 2023
Collaboration agreement with ChipMOS
Partnership signed among ChipMOS TECHNOLOGIES INC., Yoshikawa Kogyo Co., Ltd., and our company.
Oct. 2023
Japan Red Cross Society awards Gold Merit Medal
Received the Gold Merit Medal for our long-standing cooperation in blood donation at the 2023 Miyazaki Love Blood Donation Promotion Citizen Assembly.
Aug. 2023
Construction of new office building next to the Miyazaki headquarters factory
Expanded the area to be used as production lines for existing factories, constructed a new office building to enhance semiconductor production capacity, and consolidated technical and managerial staff.
Sep, 2019
Changed company name to Yoshikawakogyo RF Semicon Co., Ltd.
Mar, 2018
Appointed Takashi Araki as President(5th)
Jan, 2018
Acquired ISO 9001: 2015, IATF16949: 2016
Dec, 2017
Acquired ISO14001: 2015
Oct, 2012
Changed company name to Yoshikawa RF Semicon Co., Ltd. along with acquisition of Yoshikawa RF system Co., Ltd.
Nov, 2009
Acquired certification for ISO9001: 2008, ISO/TS16949: 2009
Mar, 2009:
Acquired certification for OHSAS 18001:2007
May, 2008
Structured Information Security Environment (Highest level of civil affairs)
Apr, 2008
Transferred Tokyo Head Office to Nishishinjyuku
Jan, 2007
Participated RF Solution Center Establishment within Kitakyushu: Academic Research City
Nov, 2006
Acquired certification for ISO/TS 16949:2002
Jan, 2006
Acquired certification for ISO 14001:2004
Mar, 2005
Increased capital to 60 Million yen
Sep, 2004
Completion of plant building (Building F: 300mm test line)
Mar, 2004
Appointed Yuichi Sato as new president(2nd)
Sep, 2003
Acquired certification for ISO9001: 2000
Mar, 2003
Appointed Shuhei Yoshikawa as President(4th)
Feb, 2000
Acquired certification for QS-9000:1998
Apr, 1999
Established Yoshikawa Electronics Engineering Co., Ltd.
Mar, 1999
Established Yoshikawa RF system Co., Ltd. Akira Koumoku, President(1st)
Dec, 1998
Acquired certification for ISO 14001:1996
Sep. 1998
Appointed Choji Inoue as President(3rd)
Aug, 1997
Established Yoshikawa Electronics Bintan (Indonesia)
Apr, 1994
Acquired certification for ISO 9002:1994
Aug, 1993
Acquired plant certification of Intel
May, 1992
Appointed Masahiko Watanabe as President(2rd)
Apr, 1989
Opened Semicon Sport Plaza
Jul, 1988
Increased Capital to 100 Million Yen
Apr, 1988
Completed Phase II building (Building D)
Sep, !987
Completed plant building (Building C)
Feb, 1987
Acquired certified plant by IBM, completed Plant building (Building B)
Jan, 1986
Designated as Certified external plant by Oki Electric (Industry)
Apr, 1985
Started operation
Mar, 1985
Completion of The phase I Building (Building A)
Mar. 1985
Appointed Shozo Nakagawa as President(1st)
Jul, 1984
Registered company establishment as Yoshikawa Semiconducotor Co., Ltd. in Koyu-gun, Miyazaki Prefecture. (Capital: 80 Million Yen)