Polyetherimidesiloxane copolymer compositions containing high melt flow polyetherimide homopolymer
CA 2050182 A1 · Owner: General Electric Company · Inventors: Durfee, Norman E. Jr.; Rock, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyetherimide siloxane copolymer compositions are provide which contain amounts of a high melt flow polyetherimide homopolymer. The compositions exhibit enhanced levels of impact strength and tensile elongation. The compositions are useful for making molded articles.
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 August 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2013.
- 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.