Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6562475 | Polyamide layered films | Haruo Okudaira, Keiji Mori | 2003-05-13 |
| 4343852 | Composite film and packaging material of polypropylene base and surface polymer composition | Tsutomu Isaka, Kazuyoshi Ohashi | 1982-08-10 |
| 4264667 | Polyester film | Tetsushi Murakami, Koichi Matsunami, Tsutomu Isaka, Yasutomi Yoshino | 1981-04-28 |
| 4230767 | Heat sealable laminated propylene polymer packaging material | Tsutomu Isaka, Maki Matsuo | 1980-10-28 |