Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5477807 | Process for producing single crystal of potassium niobate | Kazuhiro Yamada, Hiroshi Mori | 1995-12-26 |
| 4439485 | Electric discharge recording materials | Yoshihiko Kawano, Kazumi Hirakawa | 1984-03-27 |
| 4400706 | Discharge recording medium | Kazumi Hirakawa, Tsuneto Yoshizumi | 1983-08-23 |