| 1930年04月 |
Sankosha was established at 22 Shin-Saiwai-cho in Tokyo |
| 1932年04月 |
Moved to present location at 4-3-8 Osaki, Shinagawa-ku, Tokyo |
| 1932年09月 |
Koshinsha subsidiary was established at Meguro-ku, Tokyo |
| 1939年06月 |
The company was incorporated |
| 1940年05月 |
Koshinsha factory moved to Kitamagome in Ota-ku and test equipment manufacture began |
| 1946年11月 |
Became NTT Authorized Cable Terminal Box manufacturer |
| 1947年11月 |
Became Japan National Railways Authorized �R� Type Protector manufacturer |
| 1948年04月 |
Developed the world�s first self restorable overvoltage gas tube arrester with a bimetal strip |
| 1948年06月 |
Improved S Type Arrester and became approved supplier to the electric power companies |
| 1952年04月 |
Koshinsha was incorporated |
| 1952年09月 |
Established Telecommunications Equipment Division. Began manufacture of Power Monitoring Systems, Paging Systems, Cordless Telephone and sales to Power Companies, Police Department, etc |
| 1955年05月 |
Koshinsha developed automatic electric rice cooker which was then sold beginning in October under the Toshiba Corporation brand name |
| 1958年10月 |
Created and Chaired Japan Telephone and Telegram Public Corporation terminal box suppliers committee |
| 1959年04月 |
Sanko Tsushinki Company subsidiary was established |
| 1960年11月 |
Began production at new Sagami Factory |
| 1961年09月 |
Created and chaired Telecommunications Equipment Committee Cable Materials Sub-committee |
| 1963年09月 |
Became Japan National Railways Official Supplier of various protective devices for the Tokaido Shinkansen (Bullet Train). Developed cable protectors |
| 1969年11月 |
Koshinsha opened Omiya Factory. Began manufacture of household electric appliances |
| 1972年11月 |
Received Hatsumei Kyokai (Invention Institute) �Invention Promotion Award� for the development of gas filled discharge tube manufacturing techniques |
| 1975年10月 |
Koshinsha�s Omiya Factory became a JIS (Japan Industrial Standards) approved electric oven manufacturer |
| 1975年11月 |
World Products Inc. became an Authorized US Distributor of Sankosha gas tube arresters |
| 1976年11月 |
Received �Ohm Technical Prize� for static induction powered Airway Obstruction Light |
| 1978年11月 |
Sankosha Engineering (S) Pte., Ltd. was established in Singapore |
| 1979年10月 |
Received Hatsumei Kyokai (Invention Institute) �Invention Promotion Award� for the development of Multi-Element Discharge Tube and required manufacturing equipment |
| 1980年01月 |
Received Rural Electrification Administration (REA) Approval for ceramic gas tube arresters |
| 1984年11月 |
Became Northern Telecom’s Authorized Distributor in Japan |
| 1985年10月 |
Koshinsha Co. and Sankosha Tsushinki Co. were consolidated and the company was renamed Sankosha Corporation |
| 1986年04月 |
Paid-In capital was increased to ¥975,000,000 |
| 1987年01月 |
Sankosha U.S.A., Inc. was established in Los Angeles, California |
| 1987年04月 |
Developed, manufactured and began selling fiber optic distribution boxes |
| 1988年08月 |
Krone became an Authorized Distributor of Sankosha gas tube arresters |
| 1988年08月 |
First issue Sankosha commercial bonds totaling ¥100,000,000 |
| 1988年09月 |
Second issue Sankosha commercial bonds totaling ¥100,000,000 |
| 1989年04月 |
Received Science and Technology Agency Award for research in signal systems using existing power distribution networks |
| 1989年11月 |
Received Shibusawa Award for 500,000V transmission line current checker development |
| 1990年03月 |
Third issue Sankosha commercial bonds totaling ¥100,000,000 |
| 1991年05月 |
Franklin Japan Corporation, Weather Information Provider, was established |
| 1994年09月 |
Opto Techno Co., Ltd. was established |
| 1994年10月 |
Energy Saving Systems Department was established |
| 1995年02月 |
US Companies Lightning Location and Protection, Inc. (LLP), Atmospheric Research Systems, Inc. (ARSI) and GeoMet Data Services, Inc. (GDS) were acquired and consolidated to form Global Atmospherics, Inc |
| 1995年09月 |
P. T. Santelindo Kencana, a joint venture in Indonesia, was established |
| 1998年02月 |
Provided weather information in support of the 18th Winter Olympic Games at Nagano using Dual Polarization Doppler Weather Radar System |
| 1998年03月 |
Obtained ISO 9001 Certification |
| 2000年11月 |
Won ¥48th Electrical Science and Engineering Award for Development and Operation of Driven-Arc-Type Fault Current Limiter for 6.6 kV Class distribution lines |
| 2002年08月 |
Sagami Factory was renamed Sagami Techno Center |
| 2002年10月 |
Obtained ISO 14001 Certification |
| 2003年 |
Established Sankosha office in Hong Kong |
| 2003年 |
Development and sale of F Series 3 GHz coaxial protectors |
| 2003年 |
Development and sale of simple CCTV monitoring system using webcams |
| 2005年 |
JIS Compliant Surge Protector development |
| 2005年 |
Developed energy saving Airway Obstruction Light Model OM-3C |
| 2005年 |
Sankosha’s home grounding kit, “Home Earth” sales began |
| 2006年 |
Hosted seminar in celebration of our 75th year in business |
| 2006年 |
Sankosha Guangzhou Inc. was established |
| 2007年 |
Organized Japan’s first Lightning Protection System Industrial Group and was designated a Director of the group and elected to chair the technical committee |
| 2008年 |
Won the Japan Electric Association’s Shibusawa Award for achievements in the area of lightning protection for electric and electronic equipment |
| 2009年 |
Sankosha Corporation and Taiseikensetsu Company received the 21st Technology Sector Society Award for the development of the electromagnetic field analysis simulation system to estimate current flow in buildings |
| 2010年 |
Won the “Certificate of Appreciation for Achievement in Trade” from the United States Department of Commerce for sales of US Made products in Japan |
| 2011年 |
Our Representative Office in Beijing, China was established |
| 2011年 |
Received the “Third Engineering Encouragement Award” for joint research in Total Lightning Protection Technology from the engineering association of Japan |
| 2011年 |
“Surge Print” received the 2011 “Good Design Award” |
| 2012年 |
Developed a “Smart SPD” equipped with the capability to monitor deterioration in protection and notify the user when replacement is recommended |
| 2012年 |
Sankosha employee received the Chairperson’s Award from the IEC Activity Promotion Council |
| 2012年 |
Received a letter of thanks from the Hokuriku Electric Power Company for our work on the upgrade of their central commissioning office system |
| 2012年 |
Developed “Smart SPD” system with the capability to count and record the number of protection operations |
| 2012年 |
The Smart SPD Model SMB-MZSR200JK1 won the 2012 “Good Design Award” |
| 2012年 |
Received the “Electrotechnical Science and Technology Award” from the Japan Science and Technology Education Foundation for the development of a system able to detect and locate winter lightning |
| 2013年 |
Airway Obstruction Light Model OM-6C equipped with medium light intensity LED’s was approved by the Aviation Bureau |
| 2013年 |
Smart SPD equipped with “time to replace” indicator was registered with the New Technical Information System of the Ministry of Land, Infrastructure and Transport |
| 2013年 |
Sankosha Korea Corporation was established in Seoul |
| 2013年 |
Sankosha Vietnam was established in Hanoi |
| 2014年 |
Introduced 10G Base-T (Cat 6) Local Area Network (LAN) Protector using isolating transformer technology |
| 2014年 |
Sankosha employee awarded the 7th Hoshino Prize |
| 2014年 |
Sankosha employees receive the IEC 1906 Award |
| 2014年 |
SAN-EARTH approved for use grounding broadband cabinets at British Telecom |
| 2015年 |
Sankosha employee received IEC 1906 Award recognizing exceptional achievement |
| 2016年 |
Surge Protector Model GPSP1-L1 was developed to protect GPS equipment from surges entering through the antenna port |
| 2016年 |
Sankosha Engineering Thailand Co., LTD. was established in Bangkok |
| 2019年 |
BetaTech and its subsidiary Ace Lion (-Lightning protection system company) were acquired and made wholly owned subsidiaries |
| 2020年04月 |
90th Anniversary |
