Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8888958 | Pressure diffuser with an annular baffle screen plate over water inlet | Keith Vogel, Jay Sheerer, Edward James Cummings, Carl Luhrmann | 2014-11-18 |
| 8157956 | Cylindrical bearing for pressure diffuser and associated method | John Weston, Carl Luhrmann, Keith Vogel, James Oropallo, Mark R. Wilkinson | 2012-04-17 |
| 7976682 | Hinged screen plate for drum pulp washer and method for cleaning the plate | — | 2011-07-12 |
| 6123808 | Distribution of dilution liquor to the discharge of a cellulose pulp digester | John Hefele, Larry W. Laakso, Mark D. Barrett, R. Fred Chasse | 2000-09-26 |