Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5584920 | Sulphonated hydrocracking residues as concrete admixtures | Henry Sawatzky, Noel P. Mailvaganam, Ian F. Clelland, Jean-Francois Houde | 1996-12-17 |
| 5457252 | Catalyst composition for the selective hydrogenation of benzene and process for such hydrogenation | Udai S. Gill, Craig W. Fairbridge, Esteban C. Castellanos | 1995-10-10 |
| 5312483 | Adhesion of asphalt to aggregates | Henry Sawatzky, Floyd I. Clelland | 1994-05-17 |
| 5254763 | Catalyst and process for the selective hydrogenation of benzene | Udai S. Gill, Craig W. Fairbridge | 1993-10-19 |
| 5234494 | Softening agents for recycling asphalt pavement | Henry Sawatzky, Floyd I. Clelland, Jean-Francois Houde | 1993-08-10 |
| 5225159 | Deodorization of sewage sludge-derived oils | Henry Sawatzky, Terrance Giddings | 1993-07-06 |
| 4814084 | Reverse osmosis membrane of cellulosic material | Takeshi Matsuura, Srinivasa Sourirajan | 1989-03-21 |
| 4759850 | Membrane process for separating methanol from methanol/hydrocarbon solutions | Henry Sawatzky | 1988-07-26 |