Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8985932 | Multi-silo asphalt distribution and storage system | — | 2015-03-24 |
| 7581871 | Counter-flow drum mixer asphalt plant method for two stage mixing | — | 2009-09-01 |
| 7472877 | Self-aligning trunnions for rotary dryer/mixer | William L Walkington, Lonnie D Greene | 2009-01-06 |
| 7357562 | Counter-flow drum mixer asphalt plant with two stage mixing zone | — | 2008-04-15 |
| 7044630 | Counter-flow asphalt plant method | — | 2006-05-16 |
| 6672751 | Counter-flow asphalt plant with combustion zone feed and exhaust gas heater | — | 2004-01-06 |
| 6164809 | Counter-flow asphalt plant with independently rotatable dryer and mixer | — | 2000-12-26 |
| 5791556 | Easy opening envelope | — | 1998-08-11 |
| 5664881 | Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone | Robert E. Schreter | 1997-09-09 |
| 5470146 | Countercurrent drum mixer asphalt plant | — | 1995-11-28 |
| 5364182 | Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone | — | 1994-11-15 |
| 4787938 | Countercurrent drum mixer asphalt plant | — | 1988-11-29 |
| 4662390 | Water level controller for a boiler | — | 1987-05-05 |