Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868276 | Process for producing polyphenylene oxide with alkanolamine and secondary amine | Kenji Nagaoka, Masahiro Fujiwara, Katsuhiro Abe, Kazunori Yano, Ryuhei Matsui | 1989-09-19 |
| 4843113 | Aromatic polysulfone resin composition having excellent plating characteristics | Masakazu Inoue, Kuniaki Asai, Kazuo Hieda | 1989-06-27 |
| 4812011 | Optical fiber comprising a methacrylate polymer core and a fluoro polymer cladding | Toshiki Doi, Masahiko Oka | 1989-03-14 |