Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 4743684 | Reactive phthalocyanine dyes | Toshio Niwa, Kiyoshi Himeno, Kanzi Shimizu | 1988-05-10 |
| 4707546 | Reactive monoazo dyestuffs | Toshio Niwa, Kiyoshi Himeno | 1987-11-17 |
| 4626590 | Reactive monoazo and disazo pyridone dyestuffs containing a halo-substituted 6-member nitrogen-containing heterocyclic ring | Toshio Niwa, Kiyoshi Himeno, Yukiharu Shimizu | 1986-12-02 |
| 4623719 | Disazo dyestuffs having a monofluorotriazinyl group | Toshio Niwa, Kiyoshi Himeno | 1986-11-18 |
| 4515716 | 2,6-Diaminopyridine-based azo dyes for cellulose-containing fibers | Toshio Niwa | 1985-05-07 |
| 4507476 | Anthraquinone dyestuffs for cellulose-containing fibers | Toshio Niwa, Kiyoshi Himeno | 1985-03-26 |
| 4500710 | Quinophthalone dyes for cellulose-containing fibers | Toshio Niwa | 1985-02-19 |
| 4500455 | Reactive disperse diaminopyridine azo dyes containing a fluorostriazine group | Toshio Niwa, Yukiharu Shimizu | 1985-02-19 |
| 4473499 | Reactive disazo dyes containing an oxy fluoro triazine group for cellulose containing fibers | Toshio Niwa | 1984-09-25 |
| 4436906 | Anthraquinone dyes for cellulose-containing fibers and process for producing the same | Toshio Niwa | 1984-03-13 |
| 4276047 | Anthraquinone reactive dyes for cellulose-containing fibers | Seiichi Imahori, Tomio Yomeyama, Takao Hirota | 1981-06-30 |