§
Luxuse
Patent Intelligence
Sign In
← Back to Companies

Nippon Piston Ring Co Ltd

Nippon Pis
Active Patents
0
Total Holdings
4

Patent Holdings

Filter in Explorer →
Patent No. Title Status Filing Date Grant Date Claims Actions
US5272930B1 Mechanical element having a shaft pressure-fitted into an e… Expired / Lapsed 1992-06-05 1997-09-23 0 Details
US5598631A Method of making machine element with at least a fitting me… Expired / Lapsed 1995-03-03 1997-02-04 14 Details
US5272930A Mechanical element having a shaft pressure-fitted into an e… Expired / Lapsed 1992-06-05 1993-12-28 18 Details
US4969262A Method of making camshaft Expired / Lapsed 1990-03-20 1990-11-13 5 Details