(007L) Address of Early Japanese Tube Makers
Tokyo Electric (TEC)/ Toshiba
When Established (1899)
Name:

Tokyo Denki k.k.*1

Main Office:2-18 Mita-Shikoku-Machi, Shiba-Ku, Tokyo

Tube Plant (Since June, 1938): 72 Horikawa-Cho, Kawasaki-Shi, Kanagawa
Current:Name:

k.k. Toshiba (since 1939)

Main Office:1-1-1 Shibaura, Minato-Ku, Tokyo

Tube Plant:

72-34 Horikawa-Cho, Saiwai-Ku, Kawasaki-Shi

Japan Radio (JRC)
When Established ( March, 1917)
Name:

Nihon Musen Denshinki Seizousho, g.k.*2

Main Office and Plant:
1280 Shimo-Shibuya, Shibuya-Cho, Toyotama-Gun, Tokyo
Current:
Name:

Nihon Musen k.kMain Office and Plant: Same as above (renamed)
5-1-1 Shimorenjaku, Mitaka-Shi, Tokyo
Nippon Electric (NEC)When Established (1899)
Name:

Nippon Denki g.k.

Main Office: 2 Shikoku-Cho, Shiba-Ku, Tokyo
Tube Plant (1936):
Tamagawa Mukai, Shimonuma-Gun, Kawasaki, Kanagawa
Current:
Name:

Nippon Denki k.k.

Main Office: Same (renamed)
5-7-1 Shiba, Minato-Ku, Tokyo
Tube Plant : Same (renamed)
1753 Shimo-Numabe, Nakahara-Ku, Kawasaki
AnnakaWhen Established (1900)
Name:

Annaka Denki g.k.
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Main Office:39 Fujimi-Cho, Azabu-Ku, Tokyo

Tube Plant:

Same as above
Later: 1800 Onna, Atsugi-Shi, Kanagawa

In 1931 consolidated with Kyoritsu Denki, and restarted as Anritsu Denki.
Riken (Later: Hitachi)
When Established (1935)
Name:

Riken Shinku Kogyo k.k.*1

Main Office:Gofukubashi, Nihombashi-Ku, Tokyo

Tube Plant:

Togo-Mura, Mobara-Shi, Chiba

Taken over by Hitachi in 1943, and operated as Hitachi’s Tube Plant
Matsushita (National/ Panasonic)
When Established (1918)Name:

Matsushita Denki

Main Office and Tube Plant: Taikai-Cho, Nishinoda, Kita-Ku,Osaka
Current:

1006 Kadoma-Shi, Osaka

ElevamWhen Established (1917):
Name:

Miyata Seisakusho

Main Office and Tube Plant: 5-569 Araijuku, Ohta-Ku, Tokyo
Kawanishi (Later: TEN to Fujitsu)
When Established (1920)
Name:

Kawanishi Kikai Seisakusho

Main Office and Plant: Gifu, Kobe-City
Taken over by TEN (Kobe Kogyo) in 1949, and merged into Fujitsu in 1968
Shinagawa (K.O.Tron to Tou)
When Established (1941)
Name:

Shinagawa Denki

Main Office and Plant: 1-429 Gotanda, Shinagawa-Ku, Tokyo
Changed Brand from K.O.Tron to Tou since c.1942
HorizonWhen Established (1949)
Name:

Horikawa Denshikan Kenkyusho

Main Office and Plant: 4-1384 Naka-Meguro, Meguro-Ku, Tokyo
Sold to Tokyo Vacuum Tube (TVC) which was a subsidiary of Toshiba in 1941, and2

after WW II started tube production again with Horizon Brand ‘til late ‘50s.
Don
When Established (1923)
Name:

k.k. Don Shinkukan Seisakusho

Main Office and Plant: 951 Ooi-Motoshiba-Cho, Shinagawa-Ku, Tokyo
In 30s, split to “Red Don” and “Blue Don”. The Company name of Red Don became
to: Musen Suki Sangyo in the same address. Blue Don’s Company name was Nihon
Shinkukan Jitsugyo, but address is unknown.
Robin/Rodin/Rodan
When Established (1939)
Name:

Showa Denki Seisakusho

Main Office and Plant: Shiba-Ku,TokyoIn 1946 moved to Okaya, Nagano Prefecture, changed name to Okaya Musen,and continued tube production.
Toyo
When Established (1942)
Name:

g.k. Nihon Shinku Kogyo

Main Office and Plant: 75 Wakabayashi-Cho, Setagaya-Ku, Tokyo
Later changed name to k.k. Toyo Musen.
ApolloWhen Established (c.1936)
Name:

Nihon Ko-on Kogyo

Main Office and Plant?: 6-9-7 Hiratsuka, Shinagawa-Ku, Tokyo
After WW II taken over by Taiyo Denshi Kenkyusho, and continued tube
production.

Note: *1: k.k. stands for Kabushiki Kaisha meaning Joint-Stock Company*2: g.k. stands for Goshi Kaisha meaning Limited-Partnership Company----- Ed.
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