Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179227 | Fractionation process of reaction mixture containing methylene bridged polyphenylene polyisocyanate | Noritoshi Ishida, Zunzi Tashima, Kazunari Nitta, Takashi Nagou | 1993-01-12 |