Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6066380 | Disc medium substrate and disc device | Eiki Oyanagi, Takeshi Sasa, Yasuyuki Imai, Hiroshi Takino, Teiji Kohara | 2000-05-23 |
| 5585989 | Magnetic disc substrate and a magnetic disc using the same | Miyuki Kuromiya, Hiroshi Takino, Teiji Kohara | 1996-12-17 |
| 5580934 | Ring-opening hydrogenated copolymer and process for producing the same | Yoshikatsu Nishi, Teiji Kohara, Tadao Natsuume | 1996-12-03 |
| 5191026 | Ring-opening hydrogenated copolymer and process for producing the same | Yoshikatsu Nishi, Teiji Kohara, Tadao Natsuume | 1993-03-02 |
| 5143979 | Molding material | Yoshikatsu Nishi, Tadao Natsuume, Teiji Kohara | 1992-09-01 |
| 5063096 | Optical disk | Teiji Kohara, Tadao Natsuume | 1991-11-05 |
| 5061771 | Ring-opened polymer from norbornene type of polycyclic monomer and process for producing the polymer | Teiji Kohara, Tohru Hosaka, Tadao Natsuume | 1991-10-29 |
| 5043395 | Novel optical material | Tadao Natsuume | 1991-08-27 |
| 5034482 | Process for producing polymer by ring-opening polymerization | Teiji Kohara, Toshihide Murakami, Tadao Natsuume | 1991-07-23 |