Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7799430 | Carbon commutator and process for producing the same | Hiroaki Tanaka, Hiroyuki Takayanagi, Seiji Otake | 2010-09-21 |
| 6682693 | Carbon base member and process for producing the same | Yoshihiro Tanaka, Motoaki Kuribara | 2004-01-27 |