Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4758326 | Method of producing precursor pitches for carbon fibers | Yukihiro Ohsugi, Kozo Yudate | 1988-07-19 |
| 4589975 | Method of producing a precursor pitch for carbon fiber | Kozo Yudate, Yukihiro Ohsugi, Ken Nagasawa | 1986-05-20 |