Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4582878 | High-rigidity ethylene-propylene copolymer and process for producing same | Hiromasa Chiba, Takakiyo Harada, Takahiro Oka, Akihiro Sato | 1986-04-15 |
| 4550144 | Propylene-ethylene copolymers for high-rigidity molded products and process for producing the same | Hiromasa Chiba, Takakiyo Harada, Takahiro Oka, Akihiro Sato | 1985-10-29 |
| 4526931 | Whitening-resistant, highly melt-viscoelastic ethylene-propylene copolymer and process for producing the same | Hiromasa Chiba, Takakiyo Harada, Shunji Kawazoe, Akihiro Sato | 1985-07-02 |
| 4522994 | Polypropylene resin for high-rigidity molded products | Hiromasa Chiba, Takakiyo Harada, Takahiro Oka, Akihiro Sato | 1985-06-11 |