Expired Canadian patentCanada
Molded composite polyester articles having improved thermal shock resistance
CA 2060041 C · Owner: Raju, Katari S. · Inventors: Raju, Katari S.
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 molded article such as a bathroom sink having improved thermal shock resistance is produced by molding the article from a composite unsaturated polyester resin in which the resin in the cured state has an HDT value in the range of about 68°C-78°C.
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 January 24, 1992 and granted April 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.
FiledJanuary 24, 1992
GrantedApril 6, 1999
Term endedJanuary 24, 2012
Patent numberCA 2060041 C
Classification (IPC)C08L67/00 +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.