Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5836589 | Sliding member for use with lightweight metal | — | 1998-11-17 |
| 5750266 | Sliding material for light metal materials | — | 1998-05-12 |
| 5673923 | Split seal ring made of synthetic resin having crossed diverging ends | Tsutomu Watanabe | 1997-10-07 |
| 4233072 | Sliding member having wear- and scuff-resistant coating on its surface | Tamotu Watanabe, Yoshikuni Mizuma | 1980-11-11 |