Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4510292 | Ethylene-propylene copolymers for foaming and process for producing the same | Hiromasa Chiba, Kenjiro Obama, Shunji Kawazoe, Takahiro Oka | 1985-04-09 |
| 4499247 | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same | Hiromasa Chiba, Kenjiro Obama, Shunji Kawazoe, Takahiro Oka | 1985-02-12 |