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Expired Canadian patentCanada

Polyolefin molding composition

CA 1306564 C · Owner: Piesold, Jan-Peter · Inventors: Piesold, Jan-Peter

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the disclosure A polyolefin molding composition, in particular based on LLDPE, containing a fluorine-containing polymer together with a wax, has a broad processing range in which no surface defects occur. The throughput on extrusion is greatly increased.

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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

  • Granted August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 11, 1988
GrantedAugust 18, 1992
Term endedAugust 18, 2009
Patent numberCA 1306564 C
Classification (IPC)C08L23/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 11, 1988Patent grantedAug 18, 1992Term endedAug 18, 2009

Sources & verification

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