Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660661 | Oxygen sensor | Tomio Sugiyama, Masatoshi Suzuki, Hiromi Sano, Toshitaka Saito | 1997-08-26 |
| 5648948 | Apparatus for recording and reproducing a frequency bandwidth coded digital audio signal | Naoto Itoh, Yoshihisa Nagai | 1997-07-15 |