12 Utility and 11 Design Patents
#13,294 in Tokyo
#69,823 in Japan
#327,534 in the World
rank by utility patentsForward Citations = 332
Company Filing History:

Polymatech Co., Ltd.
Victor Company of Japan, Limited
4. 3 out of 303

5. 3 out of 7
Yonezawa Corporation
where one patent can have more than one assignee
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