Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539060 | Method for hydrogenation of metathesis polymers | Yasuo Tsunogae, Teiji Kohara, Tadao Natsuume | 1996-07-23 |
| 5462995 | Hydrogenated products of thermoplastic norbornene polymers, their production, substrates for optical elements obtained by molding them, optical elements and lenses | Tohru Hosaka, Yuji Koushima, Teiji Kohara, Tadao Natsuume | 1995-10-31 |