Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5426703 | Active noise eliminating system | Tsutomu Hamabe, Akio Kinoshita, Kazuhiro Doi, Yoshiharu Nakaji | 1995-06-20 |
| 5416844 | Apparatus for reducing noise in space applicable to vehicle passenger compartment | Yoshiharu Nakaji, Izuho Hirano, Kazuhiro Doi, Tsutomu Hamabe, Koji Yamada | 1995-05-16 |
| 5384853 | Active noise reduction apparatus | Akio Kinoshita, Kazuhiro Doi, Isutomu Hamabe | 1995-01-24 |
| 5337365 | Apparatus for actively reducing noise for interior of enclosed space | Tsutomu Hamabe, Akio Kinoshita, Kazuhiro Doi, Noriharu Sato | 1994-08-09 |
| 5325437 | Apparatus for reducing noise in space applicable to vehicle compartment | Kazuhiro Doi, Akio Kinoshita | 1994-06-28 |