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Expired Canadian patentCanada

Polyolefin compositions exhibiting heat resistivity, low hexane-extractives and controlled modulus

CA 2203128 C · Owner: Mergenhagen, Laura K. · Inventors: Jain, Pradeep; Moldovan, Dan G.; Whiteman, Nicole F.

CIPO record

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Abstract From the Canadian patent

The subject invention provides a polymer mixture having high heat resistivity low hexane-extractive and controllably lower or higher modulus. The mixture is comprised of at least one first substantially linear ethylene polymer Component (A), and at least one second ethylene polymer which is a homogeneously branched polymer, heterogeneously branched linear polymer or a non-high density. When fabricated into film the mixture is characterized by a , heat seal initiation temperature which is substantially lower than its vicat softening point as well as a high ultimate hot tack strength. When fabricated as a molded article, the mixture is characterized by high microwave warp distortion …

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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 October 4, 1995 and granted June 4, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 4, 1995
GrantedJune 4, 2002
Term endedOctober 4, 2015
Patent numberCA 2203128 C
Classification (IPC)C08L23/04 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedOct 4, 1995Patent grantedJune 4, 2002Term endedOct 4, 2015

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.