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April 1980	The company founded in Joyo City, Kyoto, capitalized at 10million yen.
May 1980	The company's plant established in Yodosaime-cho, Fushimi-ku, Kyoto.
December 1980	Tokyo Sales Office established in Setagaya-ku, Tokyo.
March 1989	Hokkaido Plant established in Kamisunagawa-cho, Sorachi-gun, Hokkaido.
June 1991	Hokkaido Semiconductor Corporation founded as 100% owned and subsidiary company.
December 1991	Hokkaido Semiconductor Corporation's plant established.
September 1992	Eniwa Research and Development Center established in Eniwa City, Hokkaido.
November 1998	Construction of Microgravity Utilization Laboratory(MUL) completed.
June 1999	North Semiconductor Corporation established under each 50% owned by both Kyosemi and Hokkaido Semiconductor.
April 2001	Hokkaido Semiconductor Corporation merged North Semiconductor Corporation.
June 2001	Headquarters relocated on present address of Fushimi-ku, Kyoto.
October 2001	Eniwa Operation acquired ISO9001:1994 certification.
March 2003	Company merged subsidiary Hokkaido Semiconductor.
April 2003	Company renamed from Kyoto Semiconductor Corporation to Kyosemi Corporation.
June 2004	Eniwa and Kamisunagawa Operations acquired ISO9001:2000 Certification.
August 2004	Eniwa and Kamisunagawa Operations acquired ISO14000:1996 certification.
May 2005	Tokyo Sales Office relocated to Shinjyuku-ku, Tokyo.
October 2005	Kyosemi Opto America Corporation(KOAC) established as a fully owned subsidiary sales company of Kyosemi Corp. in Santa Clara, CA,USA.
September 2006	Designated as an approved enterprise for "Innovative Management Plan" in Kyoto by new product development of UV sensor.

InGaAs 10Gbps Photodiode Chip KPDE10GC-V3: Back-illuminated Photodiode Chip. Low dark current, High speed with Large active area (φ45um). Chip-on-Carrier type is also available.
Ultraviolet LED KED365US1: UV Surface Mount LED. For Bill validation, Medical applications and Photocatalytic reations.
12-cell Sphelar^® basic modules: Micro solar modules for low power applications such as sensors, liquid crystals, etc.

Press Release: Establishment of new company, Sphelar Power Corporation
Press Release: Establishment of new company, Sphelar Power Corporation, by company split and planned capital increase through third-party allotment of shares to be allocated to the Innovation Network Corporation of Japan (INCJ) and Hitachi High-Technologies Corporation
Optical communication at FOE 2012, Apr. 11-13, 2012. (Tokyo Big Sight, Japan)

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