Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6682573 | Azo disperse dye mixtures | David Brierley, Ian Weddell | 2004-01-27 |
| 5212313 | Polycyclic dyes | Ronald W. Kenyon, Derek Thorp | 1993-05-18 |
| 5183888 | Polycyclic dyes | Ronald W. Kenyon, Derek Thorp | 1993-02-02 |
| 5084580 | Polycylic dyes | Ronald W. Kenyon, Derek Thorp | 1992-01-28 |
| 4506957 | Liquid crystal materials containing pleochroic anthraquinone dyes | Kenneth J. Harrison, Edward P. Raynes, Frances C. Saunders, David J. Thompson | 1985-03-26 |
| 4493785 | Anthraquinone compounds | David J. Thompson | 1985-01-15 |