Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997409 | Wrapping type transmission structure for internal combustion engines | Toshinari Sonoda, Masami Hiraoka | 1991-03-05 |
| 4793923 | Gradient density filter medium | Teruichi Kadoya, Tatsuo Ohta, Takashi Nagashima, Masayuki Okazaki, Naoki Ebisui | 1988-12-27 |