Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346399 | Educational game for children | — | 1994-09-13 |
| 5195842 | Oil spill tent | — | 1993-03-23 |
| D281687 | Telephone set | — | 1985-12-10 |
| D276095 | Filing system for floppy discs | — | 1984-10-30 |
| D266568 | Combined copy machine and storage support or similar article | Isao Katayama, Sadao Ishihara | 1982-10-19 |
| D261146 | Electrostatic copier or similar article | Masaaki Sakai | 1981-10-06 |
| D254181 | Copying machine | Isao Katayama, Sadao Ishihara | 1980-02-12 |