Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5786969 | Disc cartridge with wedge-shaped inclined shutter slider engaging protrusion and line contact engagement between slider portion and groove or protusion of cartridge body | Hiroshi Masuda, Makoto Arimura | 1998-07-28 |
| 4731454 | Process for producing lactams | Masayuki Otake | 1988-03-15 |