Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973520 | Optical recording medium | Hirokazu Takada | 1990-11-27 |
| 4907956 | Apparatus for manufacturing optical information recording medium | Kozo Ezaki, Kazunari Sakai, Noboru Murakami, Yasuyuki Tsuchiya, Yuichi Fujita | 1990-03-13 |
| 4548889 | Optical recording medium | Yuhei Nemoto, Yoshio Yokokawa | 1985-10-22 |
| 4320011 | Oil-containing waste water treating material consisting of modified active carbon | Hiroshi Sato, Yasuo Takenaka | 1982-03-16 |
| 4313844 | Inorganic ion exchanger | Hiroshi Sato, Hiroyuki Uchida | 1982-02-02 |