Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6402828 | Azo lake pigment composition | Greig Chisholm, Mairi Nicol | 2002-06-11 |
| 6031030 | Production process | Robert Langley, Arthur Stark Walls, Kenneth Grant Dykes | 2000-02-29 |
| 6007612 | Pigment compositions | David Ross McGregor, John B. Blackburn | 1999-12-28 |
| 5964929 | Process for the production of ink concentrates | Robert Langley, Arthur Stark Walls, Kenneth Grant Dykes | 1999-10-12 |
| 5776238 | Production of pigments | Robert Langley, Arthur Stark Walls | 1998-07-07 |