Issued Patents All Time
Showing 51–75 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5383960 | Ink jet printing inks | Ronald Wynford Kenyon, Prahalad Manibhai Mistry, John A. Taylor | 1995-01-24 |
| 5374301 | Inks suitable for use in ink jet printing | Ronald Wynford Kenyon | 1994-12-20 |
| 5370730 | Dye composition and aqueous ink derived therefrom | Ronald Wynford Kenyon, John E. Presgrave | 1994-12-06 |
| 5296023 | Phthalocyanine colorants and their use in ink jet printing | Ronald Wynford Kenyon | 1994-03-22 |
| 5281263 | Azo dyes containing a carboxy group | Prahalad Manibhai Mistry | 1994-01-25 |
| 5279656 | Xanthene dyes for ink jet printing | Ronald W. Kenyon | 1994-01-18 |
| 5268459 | Azo dyes suitable for ink jet printing | Ronald Wynford Kenyon | 1993-12-07 |
| 5262527 | Disazo dyes suitable for use in ink jet printing | Ronald W. Kenyon, Prahalad Manibhai Mistry | 1993-11-16 |
| 5254675 | Anionic disazo dyes | Prahalad Manibhai Mistry, David Greenwood | 1993-10-19 |
| 5234887 | Thermal transfer printing | Raymond L. White, Geoffrey R. Rothwell, Roy Porter | 1993-08-10 |
| 5189153 | Substituted phthalocyanines | Prakash Patel | 1993-02-23 |
| 5189154 | Anionic phthalocyanine compounds | Ronald W. Kenyon, Christine Millard | 1993-02-23 |
| 5177195 | Disazo dyes | Prahalad Manibhai Mistry | 1993-01-05 |
| 5171848 | Salts of black trisazo dyes with alkyl amines having good solubility in organic liquids | David Greenwood, John E. Presgrave | 1992-12-15 |
| 5160171 | Security coding | Arthur Quayle | 1992-11-03 |
| 5085961 | Multilayer organic photoconductor | Raymond L. White | 1992-02-04 |
| 5055566 | Amine salts of disazo black dyes having good solubility in polar organic solvents | Ronald W. Kenyon | 1991-10-08 |
| 4971875 | Multilayer organic photoconductor | Prahalad Manibhai Mistry | 1990-11-20 |
| 4968657 | Thermal transfer printing | Roy Bradbury | 1990-11-06 |
| 4922020 | 1,1,5,5-tetra(4-aminophenyl)-pentadi-1,4-ene compounds | Nigel Hughes | 1990-05-01 |
| 4908435 | Aromatic disazo compounds having strong infra-red absorption | — | 1990-03-13 |
| 4892859 | Thermal transfer printing | Roy Bradbury | 1990-01-09 |
| 4859651 | Thermal transfer printing | Roy Bradbury, Barry Huston Meyrick | 1989-08-22 |
| 4829048 | Thermal transfer printing | Richard A. Hann | 1989-05-09 |
| 4824437 | Thermal transfer printing sheet and process | — | 1989-04-25 |