12 Utility Patents
#17 in Yamagata
#69,823 in Japan
#327,534 in the World
Forward Citations = 67
Company Filing History:


Teikoku Piston Ring Co., Ltd.
4. 3 out of 4
Teipi Industry Co., Ltd.
5. 2 out of 15
Tpr Industry Co., Ltd.
where one patent can have more than one assignee
Get your Inventor Badge Today