Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816547 | Process for producing carbon dichalcogenide homopolymer and homopolymer produced thereby | Jun Tsukamoto, Akio Takahashi | 1989-03-28 |
| 4808475 | Highly electroconductive graphite continuous filament and process for preparation thereof | Akio Takahashi, Jun Tsukamoto | 1989-02-28 |