- 1930s
- 1938
- IWATSU ELECTRIC CO., LTD. founded in Yoyogi-Uehara, Shibuya-ku, Tokyo
- 1940s
- 1943
- Completed head office and plant in Kugayama, Suginami-ku
- 1944
- Supplied Radio Wave Warning Device No. 1 to Tokyo No. 1 Army Coinage Facility
- 1947
- Supplied No. 3 Telephone to Ministry of Communications
-
Panorama of Kugayama Head Office Plant (1943)
Iwasaki Bridge and Head Office front entrance
Radio Wave Warning Device
No. 3 Electric Tabletop Telephone
Panorama of Kugayama Head Office Plant (1943)
Iwasaki Bridge and Head Office front entrance
Radio Wave Warning Device
No. 3 Electric Tabletop Telephone
- 1950s
- 1951
- Supplied No. 4 Telephone to Ministry of Telecommunications
- 1954
- Supplied the first Oscilloscope No. 1 in Japan to the Technical Research and Development Institute, National Safety Agency
- 1957
- Listed on the 1st Section of the Tokyo Stock Exchange
- 1959
- Supplied the No. 1 Button Telephone System to Nippon Telegraph and Telephone Public Corporation
-
No. 4 Automatic Telephone
Oscilloscope No. 1
No. 1 Button Telephone System
No. 4 Automatic Telephone
Oscilloscope No. 1
No. 1 Button Telephone System
- 1960s
- 1963
- Supplied the 600-Model Telephone System to Nippon Telegraph and Telephone Public Corporation
- 1964
- Established Denshi Kako Co., Ltd. (currently IWATSU CHEMICAL CROSS CO., LTD.)
-
600-Model Telephone
Denshi Kako Co., Ltd. Head Office Plant at the time
600-Model Telephone
Denshi Kako Co., Ltd. Head Office Plant at the time
- 1970s
- 1970
- Established Fukushima Iwatsu Co., Ltd. (currently Iwatsu Manufacturing Co., Ltd.)
- Participated in space-related equipment measuring control system
- 1973
- Established Iwako Co., Ltd. (currently IWATSU Business Services Co., Ltd.)
- 1974
- Established IWATSU SYSTEM & SOFTWARE CO., LTD.
- 1975
- Established Tohtsu Industry Co., Ltd.
-
Fukushima Iwatsu Co., Ltd. Sukagawa Plant at the time
Space-related equipment measuring control system
Fukushima Iwatsu Co., Ltd. Sukagawa Plant at the time
Space-related equipment measuring control system
- 1980s
- 1984
- Awarded the Director General of the Science and Technology Agency Award for high-speed storage tubes for storage scopes
-
High-speed storage tube
High-speed storage tube
- 1990s
- 1999
- Obtained certification under the ISO 9001 international quality standard
- Obtained certification under the ISO 14001 international environmental standard
- 2000s
- 2009
- Made Dentsu Service Co., Ltd. a Group company
- 2010s
- 2013
- Began operating the “Iwatsu Izumizaki Mega Solar Power Plant”
- 2016
- IWATSU ELECTRIC CO., LTD. integrated three subsidiaries: Iwatsu Sales Co., Ltd., Iwatsu Test Instruments Co., Ltd., and Media Comfort Co., Ltd.
-
Iwatsu Izumizaki Mega Solar Power Plant
Iwatsu Izumizaki Mega Solar Power Plant
- 2020s
- 2020
- Established “IWATSU Test Instruments Europe GmbH,” a joint venture for the sale of measurement equipment in Germany
- 2021
- Established “IWATSU NETWORK SOLUTION CO., LTD.,” a company for sales and construction in the business communication systems business
- 2022
- Established “IWATSU CHEMICAL CROSS CO., LTD.,” a printing and chemicals operating company
-
IWATSU Test Instruments Europe GmbH
IWATSU Test Instruments Europe GmbH
