Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11021871 | Porous sound-absorbing board | Zenzo Yamaguchi | 2021-06-01 |
| 10229665 | Porous sound absorbing structure | Zenzo Yamaguchi, Akio Sugimoto, Yoshikazu Mukai, Hideki Ishitobi | 2019-03-12 |
| 9744921 | Engine hood | Zenzo Yamaguchi | 2017-08-29 |
| 9564118 | Sound insulating structure | Zenzo Yamaguchi, Akio Sugimoto, Yoshikazu Mukai | 2017-02-07 |
| 9453336 | Porous sound absorbing structure | Zenzo Yamaguchi, Akio Sugimoto, Yoshikazu Mukai, Hideki Ishitobi | 2016-09-27 |
| 8887864 | Sound absorption panel | Akio Sugimoto, Zenzo Yamaguchi | 2014-11-18 |
| 8042648 | Material for processing and molded member using the same | Kazuyo Akimoto, Yoshinori Doumoto, Kyoko Masuda, Mitsuo Hino | 2011-10-25 |
| 7654364 | Sound absorbing structure | Zenzo Yamaguchi, Toshimitsu Tanaka, Hiroki Ueda, Kensuke Tsubota | 2010-02-02 |
| 7434660 | Perforated soundproof structure and method of manufacturing the same | Toshimitsu Tanaka, Hiroki Ueda, Hideo Utsuno, Toru Sakatani, Akio Sugimoto | 2008-10-14 |
| 6708626 | Double-walled damping structure | Hiroki Ueda, Akio Sugimoto, Toshimitsu Tanaka, Narikazu Hashimoto, Takashi Oka | 2004-03-23 |
| 5895538 | Method of manufacturing and using vibration-damping material | Tadashi Hatayama, Kenshi Maekawa, Kenji Iwai, Toshimitsu Tanaka, Mamoru Taniuchi +5 more | 1999-04-20 |
| 5690035 | Vibration-damping material, its manufacturing method, and structural section for transport vehicle | Tadashi Hatayama, Kenshi Maekawa, Kenji Iwai, Toshimitsu Tanaka, Mamoru Taniuchi +5 more | 1997-11-25 |