Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11607483 | Blood separation method and blood separation filter | — | 2023-03-21 |
| 10967111 | Blood treatment filter and blood bag system | — | 2021-04-06 |
| 6771141 | Directional coupler | Masahiko Kawaguchi | 2004-08-03 |
| 6747525 | Directional coupler | Masahiko Kawaguchi | 2004-06-08 |
| 6628188 | Variable inductor and method | Masahiko Kawaguchi, Kazuyoshi Uchiyama | 2003-09-30 |
| 6624735 | Three-terminal variable inductor and method of making the same | Masahiko Kawaguchi | 2003-09-23 |
| 6583704 | Variable inductor | Masahiko Kawaguchi | 2003-06-24 |
| 6498556 | Three-terminal variable inductor | Masahiko Kawaguchi | 2002-12-24 |
| 6404319 | Variable inductance element | Masahiko Kawaguchi | 2002-06-11 |
| 6369684 | Variable inductor | Masahiko Kawaguchi | 2002-04-09 |
| 6369683 | Variable inductor | Masahiko Kawaguchi, Kazuyoshi Uchiyama | 2002-04-09 |
| 6276995 | Electronic component and method of manufacturing same | Katsuji Matsuta, Kazuyoshi Uchiyama, Masahiko Kawaguchi, Katsuhiro Misaki | 2001-08-21 |
| 6114938 | Variable inductor device | Kazuyoshi Uchiyama, Katsuji Matsuta, Masahiko Kawaguchi | 2000-09-05 |
| 5881552 | Control system for internal combustion engines and control system for vehicles | Yoichi Iwata, Akira Katoh, Toshikazu Oketani, Tetsu Teshirogi, Kentaro Yokoo +1 more | 1999-03-16 |
| 5485382 | Oxygen sensor deterioration-detecting system for internal combustion engines | Yasunari Seki, Toshihiko Sato, Yoichi Iwata | 1996-01-16 |
| 5406789 | Air-fuel ratio control system for internal combustion engines | Tsuyoshi Takizawa, Hiroshi Ito, Yoichi Iwata, Toshihiko Sato, Takayoshi Nakayama | 1995-04-18 |
| 5379591 | Air-fuel ratio control system for internal combustion engines | Yoichi Iwata, Tsuyoshi Takizawa, Yasunari Seki, Toshihiko Sato, Takayoshi Nakayama | 1995-01-10 |