23 Utility Patents
#267 in Kariya
#29,927 in Japan
#138,931 in the World
Forward Citations = 678
Company Filing History:

Yamasa Co., Ltd.

4. 2 out of 3,252
Nippondenso Co., Ltd.
5. 1 out of 832,680 patents
Other
where one patent can have more than one assignee
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