Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8821691 | Reactor vessel having single convergence sidewall plates | — | 2014-09-02 |
| 7451666 | Apparatus and test procedure for measuring the cohesive, adhesive, and frictional properties of bulk granular solids | — | 2008-11-18 |
| RE39208 | Method of treating material in a continuous digester | Jay Sheerer, Joseph R. Phillips, John Pietrangelo | 2006-08-01 |
| 6845890 | Bulk granular solids gravity flow curing vessel | — | 2005-01-25 |
| 6494612 | Racetrack-shaped dynamic gravity flow blender | — | 2002-12-17 |
| 6451163 | Method of handling comminuted cellulosic fibrous slurry in a cylindrical vessel | J. Robert Prough | 2002-09-17 |
| 6432264 | Method of making a vessel assembly for handling comminuted cellulosic fibrous material | J. Robert Prough | 2002-08-13 |
| 6375796 | Method of treating material in a continuous digester | Jay Sheerer, Joseph R. Phillips, John Pietrangelo | 2002-04-23 |
| 6336573 | Hopper, or bin, screw feeder construction controlling discharge velocity profile | — | 2002-01-08 |
| 6280575 | Frusto-conical outlet for a cellulose material treatment vessel | J. Robert Prough | 2001-08-28 |
| 6199299 | Feeding of comminuted fibrous material to a pulping process | J. Robert Prough | 2001-03-13 |
| 6186373 | Hopper, or bin, screw feeder construction controlling discharge velocity profile | — | 2001-02-13 |
| 6129816 | Tapered screen assembly for a cellulose pulp digester | Jay Sheerer, Joseph R. Phillips, John Pietrangelo | 2000-10-10 |
| 6086307 | Hoppers with directionally applied relative motion to promote solids flow | — | 2000-07-11 |
| 6055781 | Archbreaking hopper for bulk solids | — | 2000-05-02 |
| 5992689 | Variable flow rate hopper to reduce feed pulsation to a downstream process | — | 1999-11-30 |
| 5985096 | Vertical pulping digester having substantially constant diameter | Bruno Marcoccia, J. Robert Prough, C. Bertil Stromberg, Joseph R. Phillips | 1999-11-16 |
| H1681 | Discharge from pulping vessels without the aid of mechanical agitation | J. Robert Prough, J. Wayne Chamblee | 1997-10-07 |
| 5628873 | Chip bin assembly including a hollow transition with one dimensional convergence and side relief | John Baldwin | 1997-05-13 |
| 5622250 | Interface for discharging hopper contents onto feeder | — | 1997-04-22 |
| 5617975 | Chip feed system | Victor L. Bilodeau, Mark D. Barrett, John Pietrangelo | 1997-04-08 |
| 5500083 | Method of feeding cellulosic material to a digester using a chip bin with one dimensional convergence and side relief | — | 1996-03-19 |
| 5454490 | Conical insets for chip bin | — | 1995-10-03 |
| 5361945 | Combination hopper | — | 1994-11-08 |
| 5289728 | Flow-no-flow tester | Kerry Johanson, Brian D. Cox | 1994-03-01 |