Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888028 | Water-soluble blue dye mixture and dyeing method: anthraquinone reactive dye and formazan reactive dye | Riyouichi Sekioka | 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, Yoshio Kogure, Riyouichi Sekioka, Noboru Nakamura | 1989-10-10 |
| 4843150 | Pyrazolone or pyridone type water soluble disazo colorant containing one or two triazine rings | Yukiharu Shimizu, Kanzi Shimizu | 1989-06-27 |
| 4841029 | Diazo colors and dyeing method using the same | Yoshiaki Kato | 1989-06-20 |
| 4837309 | Monohalo substituted triazinyl monoazo dyestuffs for cellulose-containing fibers | Toshio Niwa, Kiyoshi Himeno, Yutaka Kurose, Yukiharu Shimizu | 1989-06-06 |
| 4801696 | Phenylazocyanothiopheneazoaniline dyes for dyeing cellulose-containing fibers in blue to bluish green shades | Toshio Niwa, Kiyoshi Himeno, Shuichi Maeda | 1989-01-31 |