Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6176188 | Waste materials processing apparatus and method | Paul H. Stevers, Earl H. Sigman, John K. Pollard, Jr. | 2001-01-23 |
| 6055916 | Waste material processing apparatus and method | Paul H. Stevers, Earl H. Sigman, John K. Pollard, Jr. | 2000-05-02 |
| 6050204 | Waste material processing apparatus | Paul H. Stevers, Earl H. Sigman, John K. Pollard, Jr. | 2000-04-18 |
| 5586855 | Apparatus and method for infeeding batched materials | — | 1996-12-24 |
| 5501159 | Method of controlling hydrocarbon release rate by maintaining target oxygen concentration in discharge gases | Paul H. Stevers | 1996-03-26 |
| 5428205 | Casing and heater configuration in a material processing apparatus | — | 1995-06-27 |
| 5420394 | Casing and heater configuration in a material processing apparatus | — | 1995-05-30 |
| 5417170 | Sloped-bottom pyrolysis chamber and solid residue collection system in a material processing apparatus | — | 1995-05-23 |
| 5388535 | Waste material flow control features in a material processing apparatus | — | 1995-02-14 |
| 5361709 | Material transport pusher mechanism in a material processing apparatus | — | 1994-11-08 |
| 5353719 | Apparatus and method for controlled processing of materials | Paul H. Stevers | 1994-10-11 |
| 5338144 | Apparatus and method for transferring batched materials | — | 1994-08-16 |
| 5338918 | Heat generator assembly in a material processing apparatus | — | 1994-08-16 |
| 5323716 | Heater and tunnel arrangement in a material processing apparatus | — | 1994-06-28 |
| 5289787 | Multiple unit material processing apparatus | — | 1994-03-01 |
| 4635899 | Air inlet valve subassembly with replaceable seal | — | 1987-01-13 |
| 4598649 | Particle fuel diversion structure with dome-shaped cavity | — | 1986-07-08 |
| 4531464 | Particle fuel diversion structure | — | 1985-07-30 |
| 4513671 | Particle fuel delivery control device | — | 1985-04-30 |