Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881943 | Disperse dyes: nitro-thiophene azo dyes for bright blue shades on polyester | David Brierley, Denis Robert Annesley Ridyard | 1989-11-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881943 | Disperse dyes: nitro-thiophene azo dyes for bright blue shades on polyester | David Brierley, Denis Robert Annesley Ridyard | 1989-11-21 |