Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302672 | 2,7-dihydroxynaphthalene based epoxy resin, intermediate thereof, processes for producing them, and epoxy resin composition | Ichiro Ogura, Shunji Ehara, Hiroshi Sakata | 1994-04-12 |
| 4962240 | Method for symmetrically dimerizing phenols and process for producing biphenols | Noriko Kurokawa, Katsuji Takahashi | 1990-10-09 |
| 4404354 | Polyphenylene-type polymeric compound and process for production thereof | — | 1983-09-13 |