Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663940 | Polypropylene multi-layer sealant films for retort packaging | Tadao Yoneyama, Tsutomu Oko | 2003-12-16 |
| 5939205 | Gas barrier resin film | Seiichiro Yokoyama, Shigeru Komeda, Kiyoshi Iseki, Yozo Yamada, Chikao Morishige +2 more | 1999-08-17 |