July, 1965 1965: Watanabe Kōgyō – predecessor to Tokyo Giken Co., Ltd – established.
The company was settled in Tamagawa Okusawa-cho, Setagaya-ku, Tokyo, Japan to manufacture and provide services for automobile fuel consumption meters and offer automobile parts.
November, 1967

Company renamed to Tokyo Giken.

The company newly established the Dental Device Manufacturing and Sales Department, which developed and introduced the central vacuum system to the market.

July, 1968 Reorganized into joint-stock company with a capital of JPY 1,000,000 and renamed to Tokyo Giken , Inc.
November, 1968 Tokyo Giken Measuring Equipment Department developed, began manufacturing and distributing an auto-recording braking meter and an accelerometer.
July, 1972 In consideration of the future of the Medical Device and Measuring Device Departments, the company purchased a site in Tamatsutsumi, Setagaya, Tokyo in order to relocate and expand the plant.
February, 1973 The headquarters building was newly built at the Tamatsusumi site, into which all headquarters facilities were moved.
February, 1974 Tokyo Giken increased its capital to JPY3,000,000.
March, 1976 The Ministry of Health and Welfare granted Tokyo Giken medical device manufacturing license.
March, 1977 Tokyo Giken became a member of the Japan Dental Machine Manufacturing Association
April, 1978 The good business reputation Tokyo Giken had earned from private universities resulted in newly established dentistry departments of national universities adopting Central Vacuum Systems.
October, 1978 Tokyo Giken purchased adjacent land for plant facilities.
July, 1979 Tokyo Giken started expanding office and plant facilities using the purchased site. All construction works were completed in August.
August, 1980 Tokyo Giken began manufacturing automatic energy saving devices in response to an increase in demand due to the energy saving policies in Japan.
June, 1981 Sendai office was opened to develop business in the Tohoku area.
April, 1982 Began production of large machinery including automated selectors of quarts resonators for clocks and automated stamping devices.
May, 1983 Widely known excellent business reputation earned from dentistry colleges in Japan helped Tokyo Giken successfully deliver products to overseas dentistry colleges.
March, 1984 Developed, began manufacturing and distributing laser diode testers.
April, 1984 Osaka office was opened to develop business in the Kansai area.
November, 1985 Shinseiki Kōgyō Co., Ltd. became an affiliated company.
March, 1986 Developed, began manufacturing and distributing the Free Arm – a device for maintaining sanitation.
May, 1986 Tokyo Giken increased its capital to JPY 12,000,000.
July, 1989 Yokohama Factory built to increase manufacturing capacity of dental and automated energy saving devices.
April, 1990 Yokohama Factory granted Medical Device Manufacturing License by the Ministry of Health and Welfare.
July, 1991 The Ministry of Health and Welfare recognized a total of 10 devices, including the TCV-CS500 and TCV-X, as medical devices.
May, 1992 Fukuoka office was opened to develop business in the Kyushu Area.
September, 1992 New seven story headquarters built with two floors underground and a showroom on the fifth floor.
April, 1994 The dentistry departments of both Tokyo Medical Dental University and Tsurumi University adopted the Free Arm to prevent against hospital-acquired infections.
November, 1995 Commended by the Tamagawa Tax Office for excellent tax filing practices.
June, 1996 Nagoya office was opened to expand the business in the Chubu area.
March, 1997 Developed and began manufacturing and distributing Clean Area to prevent against hospital-acquired infections.
February, 1998 Tokyo Giken increased its capital to JPY 24,000,000.
October, 1998 Developed, began manufacturing and distributing Viva-Luck – a tooth-brushing system equipped with a water jet and suctioning function.
September, 1999 Developed, began manufacturing and distributing the Stretcher Cleaning System – specially designed to clean stretchers carrying the deceased.
March, 2001 Yokohama Factory newly built in Tsuzuki-ku, Yokohama, Japan.
Tokyo Giken became an ISO9001 certified company.(Registration number: 00-1388)
May, 2002 Developed, began manufacturing and distributing the TCS-MAX and TCS-1.5MAX in order to realize a quiet, compact unit with high suction capacity.
October, 2002 Developed, began manufacturing and distributing Dual Suction – a newly designed system for both clinical and extraoral suction.
December, 2002 Developed, began manufacturing and distributing gas adsorption equipment to lower the concentration of formaldehyde generated during dissection.
June, 2003 Began manufacturing and distributing CAPT-PLUS, a chair-side Suction system for denture adjustment, and the Arm Tray that is easily attached to Free Arm series devices.
October, 2004 In order to make possible complete coordination of the machine room, Tokyo Giken added compressors to its product line, developed and began manufacturing and distributing the Dual Plus series.
November, 2004 Yokohama Factory received ISO 13485 certification.
April, 2005 CEO Masayuki Watanabe receives the Medal of Honor with Blue Ribbon.
November, 2005 Developed, began manufacturing and distributing the Dual Plus series compressors with back-up systems.
April, 2006 Developed, began manufacturing and distributing Clean Area Plus – an improved version of the hospital-acquired infection prevention device Clean Area.
August, 2006 Began distributing Viva Luck Plus – an improved version of the patient-care product Viva-Luck manufactured in accordance with the Electrical Appliances and Materials Safety Act.
September, 2006 Developed, began manufacturing and distributing Viva Jellwet.
Februaly, 2007 Developed, began manufacturing and distributing Luminance Light – an in-ceiling operating light.
March, 2007 Osaka office moved to Ezaka-cho for the purpose of expanding operations in Osaka.
August, 2007 Developed, began manufacturing and distributing the Airdrain System – a device for removing water from air lines.
November, 2007 Developed, began manufacturing and distributing CAPT Finisher – a dental laboratory lathe.
August, 2008 Yokohama Factory received registration certificate from the Working Environment Measurement Agency.
November, 2008 Developed, began manufacturing and distributing TCS-MAX as the newest product in the MAX medical suction series.
February, 2009 Developed, began manufacturing and distributing LEFALO – a super bright LED light for dental laboratory use.
July, 2010 Developed, began manufacturing and distributing Brillica – a new style of office whitening light.
September, 2010 Developed, began manufacturing and distributing the portable suction system TCS-Everycure and the Suction Tip Lite – a device for preventing accidental suction.
October, 2010

“Free arm arteo” was developed as new series of “FREE ARM”, and its manufacturing and sales was successfully started.
Lip-gel for Brillica was released.

Developed, began manufacturing and distributing Free arm arteo, as well as a lip gel for Brillica.

November, 2010 Fukuoka office was newly built in Sannō, Hakata-ku.
December, 2010 Viva Jellwet Petite released.
February, 2011 Developed, began manufacturing and distributing the reciprocating compressors TCC-1.5R and TCC-2.2R.
Developed, began manufacturing and distributing the Air Anti-bacterial Unit and the Oil Mist Filter.
October, 2011 Developed, began manufacturing and distributing the Clear Mouth Plus – an attachment for use with the Free Arm in laboratories.
November, 2011 Developed, began manufacturing and distributing the ceiling-mounted Free arm arteo-T.
January, 2012 Developed, began manufacturing and distributing Luminance LED NOVE – the successor to the Luminance light.
September, 2012 Developed, began manufacturing and distributing IONY – a water demineralizer for autoclaves.
January, 2013 Developed, began manufacturing and distributing the standalone and mobile Free arm arteo-S.
July, 2013 Developed, began manufacturing and distributing Brillica bianco – the successor to Brillica.
Developed, began manufacturing and distributing ASLISE – an essential oil product for improving treatment environments.
Marked 45th anniversary of the Logistics Center in Yokohama.
December, 2014 Nagoya office was newly built in Kosaka Meito, Nagoya city.
May, 2014 Developed, began manufacturing and distributing Medical Light Air – an air purifying device for medical use with an photocatalytic ceramic filter equipped to remove smells such as that of formaldehyde and antiseptics.
May, 2016 Sendai office moved to Yaotome, Izumi, Sendai City.
August, 2017 Marked our 50th Anniversary
September, 2017 Developed, began manufacturing and distributing clinical suction TCS-TS.
February, 2018 Logistics Center B built in Yokohama
April, 2018 Developed, began manufacturing and distributing EX DRYER – a refrigerated air dryer for medical facilities.
August, 2019 Developed, began manufacturing and distributing TCS-TS2 – the successor to TCS-TS.