Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868276 | Process for producing polyphenylene oxide with alkanolamine and secondary amine | Kenji Nagaoka, Yoshiharu Tatsukami, Masahiro Fujiwara, Kazunori Yano, Ryuhei Matsui | 1989-09-19 |