Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6727207 | Rolling bearing | Kenichi Iso, Michiharu Naka | 2004-04-27 |
| 6689721 | Conductive grease and rolling apparatus packed with the same | Katsuaki Denpo, Koichi Hachiya, Michiharu Naka, Tooru Shouda, Hideki Koizumi | 2004-02-10 |