Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7247664 | Bituminous composition with improved ‘walk-on-ability’ and its use in roofing applications | Erik Trommelen | 2007-07-24 |
| 6949593 | Bituminous composition with improved ‘walk-on-ability’ and its use in roofing applications | Erik Trommelen | 2005-09-27 |
| 6508875 | Bituminous composition | Duco Bodt | 2003-01-21 |
| 6120913 | Bituminous composition for shingles | Robert Q. Kluttz | 2000-09-19 |
| 5854335 | Bituminous composition with diene/monovinyl aromatic block copolymer | Aloysius Josephus Atoius Maria Van Hoek, Cornelis Petrus Valkering, Jeroen Van Westrenen | 1998-12-29 |
| 5089158 | Additives for lubricating oils and processes for producing them | Eugene Marie Godfried Andre Van Kruchten | 1992-02-18 |