Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6793771 | Ozone bleaching of low consistency pulp | V. S. Meenakshi Sundaram, Sebastien Corbeil, Steven Fisher | 2004-09-21 |
| 6773547 | Process for the bleaching of low consistency pulp using high partial pressure ozone | V. S. Meenakshi Sundaram, Steven Fisher, Sebastien Corbiel | 2004-08-10 |
| 6579412 | Process for ozone bleaching of low consistency pulp | V. S. Meenakshi Sundaram, Sebastien Corbeil | 2003-06-17 |
| 5853536 | Method for ozone bleaching of cellulosic pulp at low consistency | John R. Ayton, Michel Epiney, Gordon Homer | 1998-12-29 |
| 5688367 | Method of monitoring and recovering oxygen-rich gas from ozone bleaching | Gordon Homer, John R. Ayton | 1997-11-18 |
| 5378322 | Carbon dioxide in neutral and alkaline sizing processes | — | 1995-01-03 |
| 5250273 | Hydrometallurgical leaching process and apparatus | Robert G. H. Lee | 1993-10-05 |
| 5061377 | Pipeline reactor and method | Robert G. H. Lee, Arthur S. Perkins | 1991-10-29 |
| 4946555 | Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing | Robert G. H. Lee, Jose M. Dieguez, Arthur S. Perkins | 1990-08-07 |
| 4860827 | Process and device for oil recovery using steam and oxygen-containing gas | Robert G. H. Lee, Guillermo Garrido, Jose M. Dieguez | 1989-08-29 |
| 4823710 | Non-peripheral blowing of oxygen-containing gas in steam generating boilers | Guillermo Garrido, Robert G. H. Lee, Jose M. Dieguez | 1989-04-25 |
| 4301007 | Two zone apparatus for biological treatment of waste water | Guy Savard, Robert G. H. Lee | 1981-11-17 |
| 4284510 | Two zone process for biological treatment of waste water | Guy Savard, Robert G. H. Lee | 1981-08-18 |
| 4246111 | Apparatus for biological treatment of waste water | Guy Savard, Robert G. H. Lee | 1981-01-20 |
| 4192740 | Two zone process for biological treatment of waste water | Guy Savard, Robert G. H. Lee | 1980-03-11 |