Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5399646 | Alkylidenenorbornene polymer and process for producing the same | Teiji Kohara, Yoshitsugu Hirokawa, Tadao Natsuume | 1995-03-21 |
| 5248746 | Method of producing polymers | Yoshiharu Shimokawa, Yasuo Tsunogae, Masami Kitaoka, Yoshitsugu Hirokawa | 1993-09-28 |