Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880858 | Water absorbing polymers | David Farrar, Malcolm Skinner, John B. Clarke, David Marshall, Malcolm Hawe | 1989-11-14 |
| 4876047 | Process for producing sulphonic acid | Gerald P. Benn, David Farrar | 1989-10-24 |
| 4861539 | Process of making water-absorbent, water-insoluble, cross linked fiber or film | Adrian S. Allen, David Farrar | 1989-08-29 |
| 4859720 | Process and compositions for sizing paper | John Langley, Norma Rosier, David Farrar | 1989-08-22 |
| 4820872 | Process for hydrolyzing nitriles | David Farrar, Gerald P. Benn | 1989-04-11 |
| 4820645 | Testing polyelectrolytes | John R. Field, David Farrar | 1989-04-11 |
| 4798861 | Surface treatment of polymers | Ian M. Johnson, Ian Moody | 1989-01-17 |
| 4798888 | Dry polymers | Kenneth Charles Symes | 1989-01-17 |