Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970783 | Pulp chip fissure test device and method for estimating screened pulp yield | Benjamin Levie, Gail E. Johnson | 1999-10-26 |
| 5368168 | Bar screen with bars of staggered height | Gail E. Johnson | 1994-11-29 |
| 5284251 | Tension bar screen | Karl Werginz | 1994-02-08 |
| 5236093 | Rate control overflow system for disk screens | — | 1993-08-17 |
| 5117983 | Bar screen having a reciprocating action | — | 1992-06-02 |
| 5000390 | Apparatus and method for sizing wood chips | — | 1991-03-19 |
| 4672856 | Sample splitter | Kathryn A. Prieve | 1987-06-16 |
| 4487323 | Automatic particle-size analyzer | — | 1984-12-11 |