31 Utility Patents
#1,389 in Yokohama
#18,752 in Japan
#87,990 in the World
Forward Citations = 616
Company Filing History:
Nhk Spring Co., Ltd.
Nippon Oil Corporation
Other
4. 1 out of 8
Rp Topla Limited
5. 1 out of 3,870

where one patent can have more than one assignee
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