Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880434 | Method of obtaining dyed and finished cellulose fiber materials using reactive metallized formazan dye with no color change | Naoki Harada, Kunihiko Imada, Takashi Omura | 1989-11-14 |
| 4873321 | Monazo compounds having a triozinyl bridging group and two vinylsulfone type fiber reactive groups | Takashi Omura, Sadanobu Kikkawa, Toshihiko Morimitsu, Naoki Harada | 1989-10-10 |