Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7998265 | Asphalt compositions and the preparation thereof | William Davis Lee, James R. Butler | 2011-08-16 |
| 7824485 | Asphalt compositions and the preparation thereof | William Davis Lee, James R. Butler | 2010-11-02 |
| 7645820 | Use of zinc oxide to improve compatibility of polymer modified asphalt crosslinked with phenol aldenyde resin | Joseph Randall Bruns, William Davis Lee | 2010-01-12 |
| 7608650 | Bitumen/rubber compositions crosslinked with polythiomorpholines, polysulfides and/or mercaptobenzimidazole | William Davis Lee, James R. Butler, Wendy Stanley | 2009-10-27 |
| 7544239 | Reduction of sulfur emissions from crude fractions | William Davis Lee, James R. Butler | 2009-06-09 |
| 7495045 | Use of inorganic acids with crosslinking agents in polymer modified asphalts | William Davis Lee | 2009-02-24 |
| 7384468 | Asphalt/aggregate composition of enhanced adhesion | James R. Butler, William Davis Lee | 2008-06-10 |
| 7365111 | Use of zinc oxide to improve compatibility of polymer modified asphalt crosslinked with phenol aldehyde resin | Joseph Randall Bruns, William Davis Lee | 2008-04-29 |
| 7341624 | Asphalt compositions and the preparation thereof | William Davis Lee, James R. Butler | 2008-03-11 |
| 7338991 | Process for preparing bitumen/rubber compositions | — | 2008-03-04 |
| 7186765 | Method for preparation of stable bitumen polymer compositions | James R. Butler, Kevin Kelly | 2007-03-06 |
| 6972047 | Incorporation of gilsonite into asphalt compositions | James R. Butler, Kevin Kelly, Bill Lee | 2005-12-06 |
| 6927245 | Dispersing agent and method for the delivery of cross-linking agent to polymer modified asphalt compositions | James R. Butler | 2005-08-09 |
| 6767939 | Method for preparation of stable bitumen polymer compositions | James R. Butler, Kevin Kelly | 2004-07-27 |
| 6630245 | Articles and film of poly-&agr;-olefin having reduced coefficient of friction | Likuo Sun, Edwar S. Shamshoum, William R. Wheat | 2003-10-07 |
| 6441065 | Method for preparation of stable bitumen polymer compositions | Cyril Chevillard, Kevin Kelly, James R. Butler | 2002-08-27 |