Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698280 | Magnetic recording medium | Yayoi Kobayashi, Yasushi Kawaguchi, Hiroyuki Inokuma | 1987-10-06 |
| 4672395 | Optical fungicide-treated information recording and reproducing medium | Kazuo Arai, Shinichi Nishi, Taxey Satoh, Yasushi Kawaguchi | 1987-06-09 |
| 4490462 | Light-sensitive silver halide photographic material | Yasushi Kawaguchi, Keiko Ide, Yukie Yamashita, Soichiro Irie, Yotaro Hirao | 1984-12-25 |