Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710130 | Propylene polymer composition and its foam moldings | Akira Yamauchi, Yoshitaka Kobayashi, Tadamitu Hamasaki, Jun Shinozaki, Hiroyuki Maehara | 2004-03-23 |
| 6201069 | Polypropylene/propylene-ethylene copolymer composition and process for the preparation thereof | Tooru Fukazawa, Yozo Shimomura | 2001-03-13 |
| 5854355 | Continuous process for preparation of highly rigid propylene-ethylene block copolymers | Takahiro Oka, Yasuhiro Yamane | 1998-12-29 |
| 5672658 | Highly stiff propylene-ethylene block copolymer composition and a process for producing the same | Takahiro Oka, Yasuhiro Yamane | 1997-09-30 |
| 5416169 | Polypropylene having a high melt-tensile strength, a process for producing the same and a molded product from the same | Jun Saito, Shingo Kikukawa | 1995-05-16 |
| 5140062 | Continuous process for producing high molten viscoelastic polypropylene of ethylene-propylene copolymer | Hiromasa Chiba, Takahiro Oka | 1992-08-18 |
| 4970280 | Continuous process for producing high molten viscoelastic polypropylene or ethylene-propylene copolymer | Hiromasa Chiba, Takahiro Oka | 1990-11-13 |
| 4760113 | Process for continuously producing a high-melt viscoelastic ethylene-propylene copolymer | Hiromasa Chiba, Takahiro Oka | 1988-07-26 |
| 4526931 | Whitening-resistant, highly melt-viscoelastic ethylene-propylene copolymer and process for producing the same | Hiromasa Chiba, Takakiyo Harada, Katsumi Kumahara, Akihiro Sato | 1985-07-02 |
| 4510292 | Ethylene-propylene copolymers for foaming and process for producing the same | Hiromasa Chiba, Kenjiro Obama, Takahiro Oka, Akihiro Satoh | 1985-04-09 |
| 4500682 | High melt-viscoelastic polypropylene for post-processed sheets and for blow molding | Hiromasa Chiba, Kenjiro Obama, Takahiro Oka, Akihiro Sato | 1985-02-19 |
| 4499247 | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same | Hiromasa Chiba, Kenjiro Obama, Takahiro Oka, Akihiro Satoh | 1985-02-12 |