6 Utility Patents
#25,231 in Tokyo
#139,692 in Japan
#697,517 in the World
Forward Citations = 4
Company Filing History:
Aoki Science Institute Co., Ltd.

Aisan Industry Co., Ltd.
4. 2 out of 2
Kotobuki Kinzoku Kogyo Co., Ltd.
5. 2 out of 546

where one patent can have more than one assignee
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