Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6986516 | Metal gasket with partial coating | Shinichi Sato | 2006-01-17 |
| 6585272 | Cylinder head gasket with different seal coatings | Yutaka Kato | 2003-07-01 |
| 6517084 | Cylinder head gasket with partial seal coating | — | 2003-02-11 |
| 6517085 | Cylinder head gasket with partial resin coating | Tsunekazu Udagawa, Shinichi Sato | 2003-02-11 |
| 5957463 | Metal laminate gasket with irregular size seal ring | — | 1999-09-28 |
| 5906376 | Metal gasket with locally heated-treating bead | Tsunekazu Udagawa | 1999-05-25 |
| 5895054 | Metal gasket with a thick seal ring around a bore | Yoshio Miyaoh | 1999-04-20 |
| 5893566 | Metal laminate gasket with different coating layers | Yoshio Miyaoh | 1999-04-13 |
| 5873577 | Metal laminate gasket with partial bead section | — | 1999-02-23 |
| 5711537 | Metal gasket with a bead surrounding bolt and oil holes | Yoshio Miyaoh | 1998-01-27 |
| 5700016 | Metal laminate gasket with surface pressure adjustment mechanism | Yoshio Miyaoh | 1997-12-23 |
| 5551702 | Metal laminate gasket with engaging device | — | 1996-09-03 |
| 5460387 | Metal laminate gasket having sealing mechanism formed of recess and flange | Yoshio Miyaoh | 1995-10-24 |
| 5451063 | Steel laminate gasket | Tsunekazu Udagawa | 1995-09-19 |
| 5408963 | Metal laminate gasket having sealing mechanism formed of recess and flange | Yoshio Miyaoh | 1995-04-25 |
| 5375856 | Protecting member for a gasket | Itsuo Ishikawa, Tsunekazu Udagawa, Hisashi Yasui | 1994-12-27 |
| 5272808 | Method of manufacturing a cylinder head gasket | Tsunekazu Udagawa | 1993-12-28 |
| 5269541 | Metal gasket with sealing device with different spring constant | — | 1993-12-14 |
| 5240261 | Steel laminate gasket | Tsunekazu Udagawa | 1993-08-31 |
| 5240262 | Steel laminate gasket | Tsunekazu Udagawa | 1993-08-31 |
| 5209504 | Metal laminate gasket | Tsunekazu Udagawa, Yoshio Yamada | 1993-05-11 |
| 5205569 | Metal laminate gasket with graphite sheet | Tsunekazu Udagawa | 1993-04-27 |
| 5203576 | Clip for a gasket | Yoshio Miyaoh, Yoshio Yamada | 1993-04-20 |
| 5154529 | Positioning pin for a gasket | Tsunekazu Udagawa | 1992-10-13 |
| 5149110 | Metal gasket with fluid hole sealing sevices | — | 1992-09-22 |