TOYO DENKI SEIZO K.K. 100 years history
On June 20, 2018,TOYO DENKI SEIZO K.K. celebrated its 100th anniversary.
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

From foundation to postwar
1918
1919

Technical cooperation with British Dick Kerr and establishmentof the company with the capitalof 3 million yen
Operation started at Yokohama
Factory evelopment of thyristor static Leonard equipment series, first in Japan
1965 D
1972 Development of brushless motor generator (BLMG), first in the world
Development of 150kVA 440Hz static CVCF, first in Japan

1973 Completion of commutation ticket issuing system1977

 ompletion of large high-speed autoC
matic drafting machine

1978 Developed our proprietary AFE chopper
devicePanama Canal Agency Electric1983 Completion of in-train ticket issuing Locomotive for Dredgers

system1985 The current Yokohama Planmt was completed
1985 Delivery of world-first superimposed field excitation control for 205

Group photo of the first president,
Kaichi Watanabe, and executives fromthe partner British Dick Kerr company.

series electric train of Japanese National Railways

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

Early domestic pantograph1991 Development of light-weight VVVF inverter using 1,500V mass-production type reverse conductive GTO thyristor, first in our Japan

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

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

AS motortor (ED 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
device, first in Japan

troller for the Japan National Railways“Kodama”limited express

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”

2004 Development of electrical equipment for Beijing subway east-west line train
the 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

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

goes 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

2009 Delivered electric machinery for Tohoku
Shinkansen E5 series

2012 Order receipt of handsets for conductor
for JR West2018 May, Shiga Ryuo Plant completed

 elivery of pantograph for Shinkansen
1963 Dto Japanese National Railways

Japan National Railway Series 0Shinkansen

31998

 elivery of electric equipment for BeiD
jing subway east-west line train

2000 Completion of permanent-magnet mo-

1950~1989

1958 Completion of traction motor and con- evelopment of stroke switching type door closing machine, first in Japan
1990 DDevelopment of intelligent door system, first in Japan

trolleybus, first in Japan ompletion of controller with regenerC
ation brake using compound motor,first in Japanfirst in our country, and delivered toSagami Railway

1989 Development of small VVVF inverter using reverse conductive GTO

1990~2018

 evelopment of pantograph, first in Japan
1921 D1926 Start of manufacturing of three-phase evelopment of electric equipment for1932 D

trol VVVF inverter and delivery of it to Tokyu Electric Railway Co
thyristor, first in Japan

tors delivered directly to Keihan Electric Railway Co.

commutator motor (AS motor)

1988 Completion of world-first heat-pipe type 8-unit motor batch con-J une, Toyo Denki Seizo K.K. 100th anniversary

Los Angeles County Metropolitan
Transportation Bureau P3010 LRV