Gels
CA 2115446 C · Owner: Nixon, Allen C. · Inventors: Graulus, Hendrik; Hudson, John M.; Nixon, Allen C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Gels made of 100 parts of Styrene-elastomer-styrene triblock copolymers and more than 300 parts of an oil which softens and extends the elastomer mid-block of the copolymer are rendered resistant to oil exudation under pressure by incorporation of a styrene-elastomer diblock copolymer. Preferred triblocks are styreneethylene/butylene-styrene and preferred diblocks are styrene-ethylene/propylene. Use of the gels as sealants in enclosures for electrical connections designed to hold the gel under compression is disclosed.
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 7, 1992 and granted June 24, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 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.
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.