Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5810973 | Apparatus for producing small particles from high consistency wood pulp | A. Sean Vote, Oscar Luthi, Anthony G. Abdulmassih | 1998-09-22 |
| 5626297 | Wood pulp ozone bleaching contactor | A. Sean Vote, Oscar Luthi, Anthony G. Abdulmassih | 1997-05-06 |
| 4894121 | Pressure pulp washer | Oscar Luthi, Frederick S. Lewis | 1990-01-16 |
| 4808265 | Method of washing pulp in a pressure pulp washer adding two washing liquids | Oscar Luthi, Frederick S. Lewis | 1989-02-28 |
| 4435085 | Mixer for use in pulp processes | Oscar Luthi | 1984-03-06 |
| 4411635 | Shear overload release coupling | Howard W. Boothroyd | 1983-10-25 |