Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9206901 | Spherical annular seal member | Kouhei Kurose, Osamu Miyashita | 2015-12-08 |
| 8186721 | Spherical annular seal member, exhaust pipe joint device using the same, and method of manufacturing spherical annular seal member | Takeshi Furukido, Tomoyuki Inagaki, Masao Tomomatsu | 2012-05-29 |
| 7063330 | Spherical annular seal member and method of manufacturing the same | Shuichi Kubota, Yoshikazu Sakairi, Kouhei Kurose | 2006-06-20 |