Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888028 | Water-soluble blue dye mixture and dyeing method: anthraquinone reactive dye and formazan reactive dye | Toshio Hihara | 1989-12-19 |
| 4872881 | Mixtures of water-soluble red and yellow or blue reactive dyes and a method of dyeing cellulosic fibers using such dye mixtures | Takashi Fujita, Toshio Hihara, Yoshio Kogure, Noboru Nakamura | 1989-10-10 |