Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34727 | Low-shrinkage polyester film and preparation thereof | Shigeo Utsumi, Tomoyuki Kotani, Masumi Koizumi | 1994-09-13 |
| 5093064 | Low-shrinkage polyester film and preparation thereof | Shigeo Utsumi, Tomoyuki Kotani, Masumi Koizumi | 1992-03-03 |
| 5087526 | Biaxially oriented polyester film for use in floppy disc | Masumi Koizumi | 1992-02-11 |
| 5045379 | Polyester film for high density magnetic recording medium | Tomoyuki Kotani, Shigeo Utsumi | 1991-09-03 |
| 4990400 | Polyester films, magnetic recording media and film capacitors produced therefrom | Kazuo Endo, Nobuyasu Shudo, Chikakazu Kawaguchi, Yoshio Meguro, Masahiko Fujimoto +6 more | 1991-02-05 |
| 4985537 | Process of making a biaxially stretched polyester film and biaxially stretched polyester film | Shigeo Utsumi, Tomoyuki Kotani | 1991-01-15 |
| 4960636 | Biaxially oriented polyester film for floppy disk | Shigeo Utsumi, Masumi Koizumi | 1990-10-02 |