13 Utility and 7 Design Patents
#12,189 in Tokyo
#63,411 in Japan
#296,785 in the World
rank by utility patentsForward Citations = 163
Company Filing History:
Tomy Kogyo Co., Ltd.

Canon Electron Tubes & Devices Co., Ltd.
4. 4 out of 52,669

5. 2 out of 491
Hitachi Industrial Equipment Systems Co., Ltd.
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