Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8003247 | Button-type alkaline battery and method of manufacturing the same | Hiromi Tamakoshi, Hisanori Sugahara, Yoshihisa Hirose, Kiyoshi Sato | 2011-08-23 |
| 5013594 | Optical information recording medium and its production | Tetsuo Mizumura, Ken Nakao, Seiichi Matsushima, Yoshitane Tuburaya | 1991-05-07 |
| 4755426 | Magnetic recording medium and production of the same | Fumio Kokai, Kunio Wakai | 1988-07-05 |
| 4737415 | Magnetic recording medium and production thereof | Tsunemi Ohiwa, Fumio Kokai, Takashi Kubota, Kunio Wakai | 1988-04-12 |