Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5599882 | Ring-opening polymer and a process for production thereof | Masayoshi Ohshima, Teiji Kohara, Toshiyasu Matsui, Tadao Natsuume | 1997-02-04 |
| 5580934 | Ring-opening hydrogenated copolymer and process for producing the same | Masayoshi Oshima, Teiji Kohara, Tadao Natsuume | 1996-12-03 |
| 5191026 | Ring-opening hydrogenated copolymer and process for producing the same | Masayoshi Oshima, Teiji Kohara, Tadao Natsuume | 1993-03-02 |
| 5143979 | Molding material | Masayoshi Oshima, Tadao Natsuume, Teiji Kohara | 1992-09-01 |