Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8602420 | Spherical annular seal member and method of manufacturing the same | Takashi Maeda, Shuichi Kubota, Toshiyuki Nishio | 2013-12-10 |
| 8186721 | Spherical annular seal member, exhaust pipe joint device using the same, and method of manufacturing spherical annular seal member | Toshihiko Shimura, Tomoyuki Inagaki, Masao Tomomatsu | 2012-05-29 |
| 7172202 | Spherical annular seal member and method of manufacturing the same | Shuichi Kubota, Yoshikazu Sakairi | 2007-02-06 |
| 6152453 | Spherical annular seal member and method of manufacturing the same | Kazutsugu Kashima, Shuichi Kubota | 2000-11-28 |
| 6129362 | Spherical annular seal member and method of manufacturing the same | Kazutsugu Kashima, Shuichi Kubota | 2000-10-10 |
| 5615479 | Method of manufacturing a spherical annular seal | Takashi Maeda, Kousaku Hoshino, Satoru Udo, Masayoshi Izumi | 1997-04-01 |
| 5499825 | Spherical annular seal | Takashi Maeda, Shuichi Kubota, Toshiyuki Nishio | 1996-03-19 |
| 5462291 | Spherical annular seal with outer sliding layer | Takashi Maeda, Kousaku Hoshino, Satoru Udo, Masayoshi Izumi | 1995-10-31 |