Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6712346 | Helical compression spring for a vehicle suspension | — | 2004-03-30 |
| 6616131 | Helical compression spring for a vehicle suspension | — | 2003-09-09 |
| 6583812 | Method and apparatus for inspecting phosphor screen of cathode ray tube | Tatsuya Yamazaki, Katsumi Omote, Kazumasa Hirayama | 2003-06-24 |
| 6543757 | Helical compression spring for a vehicle suspension | — | 2003-04-08 |
| 6460840 | Helical compression spring for a vehicle suspension | Toshiho Aoyama, Shuji Kamiya, Takashi Gotoh, Koichi Irie | 2002-10-08 |
| 6375174 | Curved helical compression spring | Keiji Hasegawa | 2002-04-23 |
| 6328290 | Helical compression spring for a vehicle suspension | Toshiho Aoyama, Shuji Kamiya, Takashi Gotoh, Koichi Irie | 2001-12-11 |
| 6199882 | Vehicle wheel suspension | Toshiho Aoyama, Shuji Kamiya, Takashi Gotoh, Koichi Irie | 2001-03-13 |