Expired Canadian patentCanada
Shingle with reinforcement layer
CA 2558434 C · Owner: Kalkanoglu, Husnu M. · Inventors: Kalkanoglu, Husnu M.; Koch, Stephen A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shingle and a method of making it is provided in which the rear surface of the shingle is provided with an attached reinforcement layer through which fasteners may be applied when the shingle is applied to a roof.
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 September 1, 2006 and granted May 27, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 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.
FiledSeptember 1, 2006
GrantedMay 27, 2014
Term endedSeptember 1, 2026
Patent numberCA 2558434 C
Classification (IPC)B32B11/02 +2 more
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.