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| Number | Title | Issue Date |
| 6074469 | Asphalt composition and method A paving asphalt composition for improving the durability and longevity of asphalt road surfaces is disclosed. The paving asphalt composition includes asphalt base stock, heavy residuum of re-refined motor oil, and a chemical modifier. The heavy residuum ... | 06/13/2000 |
| 5682758 | Method and apparatus for cooling asphalt An improved apparatus and method for cooling asphalt, which includes a cooling zone, such as a cooling chamber through which coolants such as air and water are blown or drawn, and an elongated conveyor for transporting asphalt molds through said cooling z... | 11/04/1997 |
| 5452800 | Roofing asphalt packaging and method A packaging for roofing asphalt comprising a polypropylene film 1.0 to 1.8 mils thick with a melting point between 275° F. and 335° F. as the sole containment, and a method for manufacturing the same are disclosed.... | 09/26/1995 |
| 5307608 | Method and apparatus for packaging asphalt An apparatus and method for packaging asphalt, which includes liquid cooling means, such as a pool or water sprayer, and an elongated flat conveying surface, such as the surface of a conveyor belt, for transporting asphalt molds into said liquid cooling m... | 05/03/1994 |
