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Expired Canadian patentCanada

Dry-cast concrete blocks and manufacturing process therefor

CA 2550358 C · Owner: Hamel, Denis · Inventors: Hamel, Denis

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A dry-cast concrete block is provided. The dry-cast concrete block comprises a surface to be exposed at least a portion of the surface having a cast texture with a natural stone appearance. The cast texture may have a surface level difference of greater than 4 mm. In one example of implementation the dry-cast concrete block may be a paving unit in which case the surface level difference may be greater than 6 mm such as between 6 mm and 12 mm. In another example of implementation the dry-cast concrete block may be a wall construction unit in which case the surface level difference may be greater than 15 mm such as between 15 mm and 25 mm. Each of a plurality of points of the cast texture may …

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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 June 14, 2006 and granted May 27, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 2006
GrantedMay 27, 2014
Term endedJune 14, 2026
Patent numberCA 2550358 C
Classification (IPC)E04C1/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 14, 2006Patent grantedMay 27, 2014Term endedJune 14, 2026

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.