Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280371 | Distillation of used motor oil with distillate vapors | Timothy E. Laska, John T. Turner | 2019-05-07 |
| 9243191 | Re-refining used motor oil | Timothy E. Laska, John T. Turner | 2016-01-26 |
| 7465387 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof | Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder | 2008-12-16 |
| 7241821 | Polymer-modified, vulcanized asphalt composition and its method of preparation | Roger E. Hayner, Patricia K. Doolin | 2007-07-10 |
| 7066997 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof | Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder | 2006-06-27 |
| 6352637 | High coking value pitch | Patricia K. Doolin, Melvin D. Kiser | 2002-03-05 |
| 5961709 | Environmentally improved asphalt compositions and their preparation | Roger E. Hayner, Patricia K. Doolin, James F. Hoffman | 1999-10-05 |
| 5728291 | Demetallation - high carbon conversion process, apparatus and asphalt products | Charles Benjamin Miller, Howard F. Moore, David P. Wesley, Carlton H. Jewitt, Roger E. Hayner +2 more | 1998-03-17 |
| 5601697 | Demetallation-High carbon conversion process, apparatus and asphalt products | Charles Benjamin Miller, Howard F. Moore, David P. Wesley, Carlton H. Jewitt, Roger E. Hayner +2 more | 1997-02-11 |
| 4927620 | Process for the manufacture of carbon fibers and feedstock therefor | Clifford Ward, Eugene Chao, Roy E. Booth, Frank H. Turrill, John W. Newman +1 more | 1990-05-22 |
| 4659389 | Method and composition of asphaltic roofing fluxes | Donald D. Carlos, Charles R. Gannon | 1987-04-21 |
| 4544411 | Method and composition of asphaltic roofing fluxes | Donald D. Carlos, Charles R. Gannon | 1985-10-01 |
| 4456523 | Processes for producing high grade asphaltic materials from low grade bituminous materials and products resulting therefrom | Donald D. Carlos, Charles R. Gannon | 1984-06-26 |
| 4456524 | Process for enhancing catalytic response of asphalt oxidation catalyst | Charles R. Gannon, Donald D. Carlos | 1984-06-26 |