Over 100-Year History of Toyo Denki Seizo K.K.
Our company was founded in 1918 with the intention of “domestic production of electrical machinery for railway vehicles”.
A spectacular feeling that we want to export products to domestic as well as to many Orient countries and contribute to thedevelopment of the country has come from the name of “TOYO DENKI SEIZO K.K.”. And this feeling has been handed
down to successive employees, and now our products are contributing to the development of social infrastructure systems
around the world.

1918~1949

1972 Development of brushless motor generator (BLMG), first in the world

From foundation to postwar
1918 Technical cooperation with Brit1919

ish Dick Kerr and establishmentof the company with the capitalof 3 million yen
Operation started at Yokohama
FactoryDevelopment of 150kVA 440Hz static CVCF, first in Japan

1973 Completion of commutation ticket issuing system

1977 Completion of large high-speed automatic drafting machine

1978 Developed our proprietary AFE chopper Panama Canal Agency Electric
device1983 Completion of in-train ticket issuing

Locomotive for Dredgerssystem

1985 T he current Yokohama Planmt was completed
1985 Delivery of world-first superimposed field excitation control for 205
series electric train of Japanese National Railways

Group photo of our employees withtechnical advisors from the partner
British Dick Kerr company.

1988 Completion of world-first heat-pipe type 8-unit motor batch control VVVF inverter and delivery of it to Tokyu Electric Railway Co

Yokohama factory at the start of operations(Hodogaya-ku, Yokohama)

1920 C ontrol equipments and traction mo-

Global expansion and to the next 100 years

1921
1926 Start of manufacturing of three-phaseD evelopment of pantograph, first in Japan evelopment of electric equipment for1932 D evelopment of stroke switching type door closing machine, first in Japan
1990 D
Early domestic pantographduction type reverse conductive GTO thyristor, first in our Japan

1997 Completion of in-train ticket issuing machine corresponding to automatic ticket checker

1998 Delivery of electric equipment for Bei-

1935 Development of diesel electric railcar,
1949 O ur stocks was listed on Tokyo Stock Exchange

jing subway east-west line train

AS motor

From postwar reconstruction to high economic growth evelopment of ST type three-phase AC
1950 D

Commutator motor (patented)

1952 Development of Cardan shaft driving
Cardan shaft driving device

1959 C ompletion of automatic train stop
1960 C ompletion of traction motor anddrive for Shinkansen testing car
Order received for electric towing locomotive for the Panama CanalDevelopment of constant-speed operation controller for vehicle, first in Japan
Development of hydraulic winch forship, first in Japan

Japan National Railway 151 series
limited express train “Kodama”

2008 S tart of sales of the VF66 inverter
2009 Delivered electric machinery for Tohoku
Shinkansen E5 series

2018 May, Shiga Ryuo Plant completed
Japan National Railway Series 0Shinkansen

1969 Completion of automotive brake test equipment

3goes into service (delivery of automatic commuter ticket vending
machine with support for smart card passes and smart card chargemachines to station facilities)
Start of commercial service of the new N700 series trains on the Tokaido and Sanyo Shinkansen lines (delivery of traction motors, gear units,pantographs, TD couplings, static conversion equipment, etc.)
Start of sales of the VF66 Series general purpose inverter

for JR West

to Japanese National Railways
equipment series, first in Japanthe world’s first micro gas turbine hybridvehicle
Joint development of the first full-flat,super-low floor light rail vehicle (LRV)
produced in Japan
Succeeded in development and runningof in-wheel motor for car

2012 Order receipt of handsets for conductor

 elivery of pantograph for Shinkansen
1963 D

1965 Development of thyristor static Leonard

tor (ED motor)

2007 The new public transport smart card Pasmo In-wheel motor

device, first in Japan

troller for the Japan National Railways“Kodama”limited express

2000 Completion of permanent-magnet mo2004 Development of electrical equipment for Beijing subway east-west line train

1950~19891958 Completion of traction motor and con-

Development of intelligent door system, first in Japan

1991 Development of light-weight VVVF inverter using 1,500V mass-pro-trolleybus, first in Japan ompletion of controller with regenerC
ation brake using compound motor,
first in Japanfirst in our country, and delivered toSagami Railway

thyristor, first in Japan

1990~2019

tors delivered directly to Keihan Electric Railway Co.

commutator motor (AS motor)

1989 Development of small VVVF inverter using reverse conductive GTO

Angeles County MetropolitanJ une, Toyo Denki Seizo K.K. 100th anni- Los
Transportation Bureau P3010 LRV
versaryOrder received for consigned research and development of superconducting flywheel power storage system for railways

2019 Establishment of SIAM TOYO DENKI Co., Ltd. in Thailand stablishment of Chalco-Toyo Permanent Magnet Motor Co., Ltd.
Ein China