Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448357 | Polyolefin resin composition | Sadamu Hirakawa, Akihiko Yamamoto | 2002-09-10 |
| 6110549 | Sealant resin composition for use in retort film and sealant film | Sadamu Hirakawa, Shigeo Ozaki | 2000-08-29 |
| 5756193 | Polyethylene resin composition for heavy-duty packaging bag and polyethylene resin film produced from the same | Akihiko Yamamoto, Toshihiro Nishimura, Kouji Kitahara | 1998-05-26 |