Expired Canadian patentCanada
A thin-walled rubber article, process for the preparation of the rubber article and a solution for the preparation of said rubber article
CA 2115318 C · Owner: Danpren A/S · Inventors: Grennes, Torbjorn; Nielsen, Bent
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 thin-walled rubber article with a high tear resistance prepared by dip forming, comprising styrene-isoprenestyrene (S-I-S) triblock copolymer, and styrene-butadienestyrene (S-B-S)-triblock copolymer with a S-I-S content from - 75% by weight.
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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 February 9, 1994 and granted September 24, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 9, 1994
GrantedSeptember 24, 2002
Term endedFebruary 9, 2014
Patent numberCA 2115318 C
Classification (IPC)C08L53/02 +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.