Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153300 | Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals | C. Bertil Stromberg, Patrick Sharpe, Joseph R. Phillips | 2000-11-28 |
| 5472567 | Method of chemically reacting a slurry with a gas | — | 1995-12-05 |
| 5458738 | Clarifying suspended solids from liquid process streams | J. Wayne Chamblee, Brian F. Greenwood, Gunther Plattner | 1995-10-17 |
| 5405497 | Method of chemically reacting a liquid with a gas in a vortex | — | 1995-04-11 |
| 5338366 | Acid pre-hydrolysis reactor system | Todd S. Grace, Mark D. Barrett, Vic L. Bilodeau, Gary L. McCarty, Brian F. Greenwood +1 more | 1994-08-16 |
| 5171405 | Reactor having a discontinuous conduit means between surfaces of a downwardly extending stationary spiral | — | 1992-12-15 |
| 5116488 | Gas sparged centrifugal device | — | 1992-05-26 |
| 4944842 | Method for reducing contamination in pulp processing | C. Bertil Stromberg, Joseph R. Phillips | 1990-07-31 |
| 4596631 | Method of removing latency from medium consistency pulps by pumping the pulp | J. Robert Prough, Ake Backlund | 1986-06-24 |
| 4577974 | Medium consistency mixer rotor and stator construction | J. Robert Prough | 1986-03-25 |
| 4298426 | Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence | Jozef M. Bentvelzen, Gerald D. Crosby, Jr., Michael D. Meredith, Henry Bepple | 1981-11-03 |
| 4298427 | Method and apparatus for intimately mixing oxygen and pulp while using an alkali to extract bleaching by-products | Jozef M. Bentvelzen, Michael D. Meredith, Henry Bepple | 1981-11-03 |
| 4295925 | Treating pulp with oxygen | Jozef M. Bentvelzen, Michael D. Meredith, Henry Bepple, Howard R. Battan, Dennis H. Justice | 1981-10-20 |
| 4295926 | Method and apparatus for treating pulp with oxygen | Jozef M. Bentvelzen, Michael D. Meredith, Henry Bepple, Howard R. Battan, Dennis H. Justice | 1981-10-20 |
| 4295927 | Method and apparatus for treating pulp with oxygen and storing the treated pulp | Jozef M. Bentvelzen, Michael D. Meredith, Henry Bepple, Howard R. Battan, Dennis H. Justice | 1981-10-20 |
| 4216054 | Low-consistency ozone delignification | Jozef M. Bentvelzen, Steven L. Bogart, Maharaj K. Gupta, William T. McKean, Michael D. Meredith | 1980-08-05 |