Asphalt imprinting method and apparatus
CA 2086687 C · Owner: Zaseybida, Norman Jerry · Inventors: Zaseybida, Norman Jerry; Stowell, Claude Clifford
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for imprinting a predefined pattern in a freshly rolled asphalt surface to simulate the appearance of bricks, cobblestones inter-, locking paving stones or the like. A pliable grid-like, template is progressively compressed into the asphalt surface using a drum roller or other surface compactor. The template is then manually lifted clear of the asphalt surface and the asphalt is allowed to harden. The patterned asphalt surface may be treated with a thin coating of coloured concrete to enhance the brick and mortar effect.
Read the whole patent
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 November 2, 1992 and granted August 23, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2014.
- 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.