58 Utility Patents
#3 in Kitakatsuragi-gun
#5,640 in Japan
#28,673 in the World
Forward Citations = 245
Company Filing History:

Koyo Seiko Company, Ltd.

4. 5 out of 929
Sumitomo Metal Industries, Inc.
5. 2 out of 831,952 patents
Other
where one patent can have more than one assignee
Get your Inventor Badge Today