1964 MarchUSHIO INC., established with capital of ¥12.5 million
1967 MayUSHIO AMERICA, INC., established (as a lamp sales base) in the United States
1968 SeptemberYokohama Division established in Yokohama, Kanagawa Prefecture
1970 MayListed on the Second Section of the Tokyo Stock Exchange (TSE); capital increased to ¥400 million
Harima Division, established in Himeji, Hyogo Prefecture
1971 AugustMoved head office to Otemachi business district in Tokyo
1974 AprilListed on the Second Section of the Osaka Securities Exchange (OSE); capital increased to ¥820 million
1980 SeptemberListed on the first sections of the TSE and OSE (delisted from OSE in January 2010); capital increased to ¥1,540 million
1981 AprilU-Tech, Inc., established (as a lamp and industrial machine sales base; currently USHIO LIGHTING, INC.)
1983 JuneHYOGO USHIO ELECTRIC, INC., established (as a lamp production and a sales base; currently USHIO LIGHTING, Inc.)
1985 AprilUSHIO EUROPE B.V., established (as a lamp sales base) in Netherland
1986 JulyU-Tech, Inc., renamed USHIO U-Tech, Inc.
1986 SeptemberUSHIO HONG KONG LTD., established (as an optical equipment production and a sales base) in Hong Kong
1987 AprilUSHIO OREGON, INC., established (as a lamp production and a sales base; currently USHIO AMERICA, INC.) in the United States
1987 SeptemberUSHIO TAIWAN, INC., established (as a lamp production and a sales base) in Taiwan
1988 SeptemberTSUKUBA USHIO ELECTRIC, INC., established in Tsukuba, Ibaraki Prefecture
1988 DecemberGotemba Division, established in Gotemba, Shizuoka Prefecture
USHIO FRANCE S.A.R.L., established prefecture (as a lamp sales base) in France
1989 JuneSingapore Liaison Office upgraded to subsidiary as USHIO SINGAPORE PTE LTD. (a lamp sales base)
1990 JuneUSHIO MARINE, INC., established (as a fishery equipment sales base; currently USHIO LIGHTING, INC.)
1990 OctoberBLV Licht- und Vakuumtechnik GmbH of Germany, acquired (as a lamp production and a sales base)
1991 NovemberNIHON DENSHI GIJUTSU CO., LTD., acquired (as an industrial electronic equipment production and a sales base)
1992 AprilThe projector division of Christie Electric Corp. of the United States, established and CHRISTIE, INC., established (as a projector-related equipment production and a sales base; currently CHRISTIE DIGITAL SYSTEMS U.S.A, Inc.)
1992 JuneUSHIO DEUTSCHLAND GmbH, established (as a lamp sales base) in Germany
1995 AugustUSHIO INTERNATIONAL B.V., established (a holding company) in Netherland
1996 JanuaryUSHIO PHILLIPINNES, INC., established (as a lamp production and a sales base) in the Philippines
1996 MarchUSHIO KOREA INC., established (as a lamp sales base) in the Republic of Korea
1997 AprilUSHIO U.K., LTD., established (as a lamp sales base) in the United Kingdom
1997 JulyUSHIO Research Institute of Technology Inc., established (as an R&D center on light sources and optical devices; liquidated in February 2008)
1999 JanuaryTAIWAN USHIO LIGHTING, INC., established (as a lamp production and a sales base) in Taiwan
1999 September The imaging equipment division of Electrohome Ltd. of Canada, acquired and CHRISTIE SYSTEMS, INC. (as a holding company; currently CHRISTIE DIGITAL SYSTEMS, INC.), CHRISTIE DIGITAL SYSTEMS, INC. (as a digital imaging equipment production and a sales base; currently CHRISTIE DIGITAL SYSTEMS CAMADA INC.), and CHRISTIE DIGITAL SYSTEMS U.S.A., INC. (as a digital imaging equipment sales base), established
2000 AprilUSHIO MARINE, INC. merged into USHIO U-Tech, INC.
2000 AugustGIGAPHOTON, INC., established (as a base for development, production, and sales of excimer laser for lithography)
2001 AprilRestructured Christie Group (Christie Digital Systems, Inc., Christie Digital Systems U.S.A., Inc. and Christie Digital Systems Canada, Inc.)
2001 MayUSHIO U-Tech (Hong Kong) CO., LTD., established (as an industrial machinery sales base; later renamed USHIO LIGHTI NG (HONG KONG) CO., LTD.; liquidated in March 2010) in Hong Kong
2003 AprilEvent Audio Visual Group Inc. of the United States, acquired (as a base for imaging equipment rental business)
2003 JulyUSHIO SHANGHAI, INC., established (as a lamp sales base) in the People's Republic of China
2004 MarchUSHIO (SUZHOU) CO., LTD., established (as a lamp production and a sales base) in the People's Republic of China
2004 AprilUSHIO LIGHTING, INC. and USHIO U-Tech, INC. merged with USHIO U-Tech, INC being the surviving company with the name USHIO LIGHTING, INC.
USHIO OREGON, INC. merged into USHIO AMERICA, INC.
2004 AugustCHRISTIE DIGITAL SYSTEMS (SHANGHAI), LTD., established (as a digital projector sales base) in the People's Republic of China.
2005 April

HYOGO USHIO LIGHTING, INC., established (as a lamp production base)

2005 JulyA 50% equity in XTREME technologies GmbH of Germany, acquired (as a base for development, production, and sales of EUV light sources)
2005 OctoberNATRIUM S.A. of Poland, acquired (as a lamp production and a sales base)
2007 JulyVista Controls System, Corp. of the United States, acquired (as a base for production and sales of visual information processing systems)
2008 JanuaryEPITEX, INC., acquired (as an LED production and a sales base)
2008 AprilUSHIO SHENZHEN, INC., established (as a lamp sales base) in the People’s Republic of China
2008 MayA 100% equity in XTREME technologies GmbH, acquired to make it a wholly owned subsidiary
2009 JulyNecsel Intellectual Property, Inc. of the United States, acquired (as a base for development, production, and sales of semiconductor laser)
2009 DecemberLuminetx Corporation of the United States, acquired (as a medical equipment production and a sales base; currently CHRISTIE MEDICAL HOLDINGS, INC.)
2010 JuneCHRISTIE DIGITAL SYSTEMS(SHENZHEN) CO.,LTD., established (as a base for production of digital imaging equipment) in China
2010 DecemberA 100% equity in Necsel Intellectual Property, Inc. of the United States, acquired to make it a wholly owned subsidiary (as a base for development, production, and sales of semiconductor lasers)
2011 MayTransferred all of its shares of GIGAPHOTON INC. to Komatsu Ltd.
2012 JanuaryCHRISTIE DIGITAL SYSTEMS SOUTH AMERICA LTDA., established (as a base for sales of digital imaging equipment) in Brazil
2012 MarchAdditional shares of Adtec Engineering Ltd.,acquired by TOB to make it a consolidated company.
2012年4月Changed the corporate name of USHIO SINGAPORE PTE LTD. to USHIO ASIA PACIFIC PTE LTD.
USHIO AMERICA HOLDINGS, INC., established (as a holding company in North America)
USHIO (SHAOGUAN) CO., LTD, established (as a production of lamp) in China
2012 NovemberVR Solutions Pty Ltd. and its subsidiary VR Solutions India Pvt Ltd., acquired (currently called CHRISTIE DIGITAL SYSTEMS AUSTRALIA PTY. LTD AND CHRISTIE DIGITAL SYSTEMS (INDIA) PVT. LTD., a seller of digital imaging equipment)
2013 MarchUSHIO ASIA PACIFIC (THAILAND) LTD., established (as a lamp sales base) in Thailand
2013 JulyCHRISTIE DIGITAL SYSTEMS MEXICO, S. DE R.L. DE C.V., established (as a digital projector sales base) in Mexico
2014 MayArsenal Media Inc. of Canada, acquired (as a base for planning and creating digital contents)
2014 JulyUSHIO OPTO SEMICONDUCTORS, INC., established (as a base for production and sales of LED and semiconductor laser diode)
2014 AugustAdditional equity in ADTEC Engineering Co., Ltd.,acquired to make it a wholly owned subsidiary
2015 JanuaryCoolux GmbH of Germany, acquired (as a base for production and sales of digital contents control equipment)