Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4729817 | Process for the oxidative delignification of demethylated chemical pulp | Raymond Francis | 1988-03-08 |
| 4599975 | Control of boiler operations | Hoc N. Tran | 1986-07-15 |
| 4421598 | Bleaching procedure using chlorine dioxide and chlorine solutions | — | 1983-12-20 |
| 4409066 | Bleaching procedure using chlorine dioxide and chlorine solutions | W. Howard Rapson | 1983-10-11 |
| 4406736 | Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution | — | 1983-09-27 |
| 4325783 | Bleaching procedure using chlorine dioxide and chlorine solutions | W. Howard Rapson | 1982-04-20 |
| 4299653 | Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution | — | 1981-11-10 |
| 4188260 | Low effluent pulp mill, bleach plant operation | Gordon Rowlandson, W. Howard Rapson | 1980-02-12 |