Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831598 | Picture display apparatus | Masahiro Koike, Fuminobu Takahashi, Satoshi Ogura | 1989-05-16 |
| 4802891 | Coal-methanol slurry and its production process | Tetsuya Oishi, Kazuhiko Hanashita | 1989-02-07 |