Pavement patch material
CA 2381908 A1 · Owner: Crafco, Inc. · Inventors: Parkison, Robert Lowel; Chehovits, James G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pavement patch composition of the present invention comprises a lightweight aggregate (14) and highly modified polymer asphalt binder (12). The composition is formed by heating the binder to a flowable state mixing , the flowable binder with a lightweight aggregate and then allowing it to cool , into a solid form. The pavement patch composition (10) is used to repair voids in pavement, such as pot holes, cracks and depressions. It is applied by heating solid pavement patch composition to a flowable state and applying it to the void, or on a surface in need of repair and then allowed to cool. The , resulting patch is self-adhering strong and flexible. The formulation of the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.