Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869516 | Steel laminate gaskets | Yasuji Hiramatsu, Hidetaka Nakasone, Yoshio Yamada | 1989-09-26 |
| 4867462 | Steel laminate gasket with separate beads | — | 1989-09-19 |
| 4861046 | Steel laminate gasket with separate beads | — | 1989-08-29 |
| 4834399 | Steel laminate gasket | Susumu Inamura | 1989-05-30 |
| 4828275 | Gasket with elastic sealing members | — | 1989-05-09 |
| 4826708 | Method of manufacturing a steel plate with a seal coating for a steel laminate gasket | — | 1989-05-02 |
| 4809653 | Steel laminate type cylinder head gasket | Yoshio Yamada | 1989-03-07 |
| 4807892 | Steel laminate gasket with high sealing ability | — | 1989-02-28 |
| 4803965 | Steel laminate type cylinder head gasket | Yoshio Yamada | 1989-02-14 |