Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364958 | Process for the production of methylene-crosslinked polyphenylene polyisocyanate | Zunzi Tashima, Naoki Sato, Michiya Takasaki, Masaaki Iijima, Kazuyuki Kuroda +1 more | 1994-11-15 |
| 5179227 | Fractionation process of reaction mixture containing methylene bridged polyphenylene polyisocyanate | Zunzi Tashima, Mitsunori Shimamatsu, Kazunari Nitta, Takashi Nagou | 1993-01-12 |
| 5053539 | Methylene-crosslinked polyarylamine and process for preparing same | Naoyuki Yano, Tatsuya Nagayoshi, Takashi Nagou, Zunzi Tashima, Hiroyuki Itoh +1 more | 1991-10-01 |