Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6462204 | Polycyclic dyes | Nigel Hall | 2002-10-08 |
| 5279656 | Xanthene dyes for ink jet printing | Peter Gregory | 1994-01-18 |
| 5262527 | Disazo dyes suitable for use in ink jet printing | Peter Gregory, Prahalad Manibhai Mistry | 1993-11-16 |
| 5212313 | Polycyclic dyes | David F. Newton, Derek Thorp | 1993-05-18 |
| 5203912 | Anionic dye | David Greenwood, Nigel Hughes, Suraj L. Hindagolla | 1993-04-20 |
| 5196392 | Thermal transfer printing | Roy Bradbury, Derek Thorp | 1993-03-23 |
| 5189154 | Anionic phthalocyanine compounds | Peter Gregory, Christine Millard | 1993-02-23 |
| 5183888 | Polycyclic dyes | David F. Newton, Derek Thorp | 1993-02-02 |
| 5084580 | Polycylic dyes | David F. Newton, Derek Thorp | 1992-01-28 |
| 5055566 | Amine salts of disazo black dyes having good solubility in polar organic solvents | Peter Gregory | 1991-10-08 |
| 5053495 | Anionic dye having high water-fastness | David Greenwood, Nigel Hughes, Suraj L. Hindagolla | 1991-10-01 |
| 4916240 | Hetero-polycyclic aromatic compounds | — | 1990-04-10 |
| 4881943 | Disperse dyes: nitro-thiophene azo dyes for bright blue shades on polyester | David Brierley, Denis Robert Annesley Ridyard | 1989-11-21 |
| 4680417 | 2.6-dioxo-2.6-dehydrobenzo[1:2-b,4:5-b]difurans | Derek Thorp | 1987-07-14 |
| 4650882 | Dyes having two 5-membered lactone rings fused to a central cyclohexa-1.4-diene nucleus | Derek Thorp | 1987-03-17 |