Weather resistant substrates having protective elastomeric layers
CA 1279566 C · Owner: Knaepen, Marc · Inventors: Knaepen, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substrates such as chipboard or cement aggregate board are upgraded with a cured rubber layer by forming on the substrate a composite of uncured but curable rubber sheeting containing a heat activatable curative with an intermediate film of polar thermosetting resin and, hot pressing the uncured composite so as to form polar bonds between the resin and substrate with simultaneous co-vulcanisation of the rubber and the resin.
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
- Granted January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.