Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5073234 | Composition and method of deinking of recycled cellulosic material | Gordon R. Sneddon | 1991-12-17 |
| 5004631 | Surface treatment with sulfonate ester polymer | Martyn Humphries, Jozef Nemcek, John Christopher Padget | 1991-04-02 |
| 4970269 | Compositions of polymers with sulfphate and/or sulfphonate groups | Martyn Humphries, Jozef Nemcek, John Christopher Padget | 1990-11-13 |
| 4919754 | Composition wherein recycled cellulosic pulp is deinked | Gordon R. Sneddon | 1990-04-24 |
| 4808433 | Treatment of archival material | Christine E. Butler, Michael L. Burstall | 1989-02-28 |
| 4724158 | Treatment of archival material | Christine E. Butler, Michael L. Burstall | 1988-02-09 |
| 4326912 | Process for improving the quality of pulp obtained from wastepaper | — | 1982-04-27 |