13 Utility Patents
#12,207 in Tokyo
#63,483 in Japan
#297,277 in the World
Forward Citations = 25
Company Filing History:

Tanaka Kikinzoku Kogyo K.k.

4. 2 out of 34
Shibaura Institute of Technology
5. 1 out of 10
Tama-tlo Corporation
where one patent can have more than one assignee
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