Poly(arylene sulfide) composition with improved impact strength and reduced shrinkage
CA 2039374 A1 · Owner: Yu, Michael C. · Inventors: Yu, Michael C.; Allison, John B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
32797CA, Abstract, There are provided compositions comprising poly(arylene sulfide) polymeric rubber, polyethylene, and carboxylic anhydride; and methods for making these compositions. Articles produced from the compositions have reduced shrinkage and improved impact strength.
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 March 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 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.