Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841027 | Process for preparing phenyl- and naphthylazo-aminonaphthol sulphonic acids | Yutaka Kayane, Takashi Omura, Hideharu Sone | 1989-06-20 |
| 4841031 | Reactive dye having both monochlorotriazinyl and vinylsulfone type reactive groups | Yutaka Kayane, Katsumasa Otake | 1989-06-20 |