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Expired Canadian patentCanada

Biocompatible synthetic fibers and method of preparing same

CA 1095409 A · Owner: Snamprogetti S.P.A. · Inventors: Marconi, Walter; Morisi, Franco; Bartoli, Francesco

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Abstract From the Canadian patent

The invention is concerned with a bio-compatible synthetic fiber comprising a polymer having occluded therein a bio-compatible material selected from the group consisting of platelet-aggregation preventing agents anticoagulant, agents and antithrombic agents; the polymer is selected from the group consisting of cellulosic polymers esterified, cellulosic polymers, etherified cellulosic polymers nitrated, cellulosic polymers, the polymers and copolymers of vinylidene chloride, vinyl chloride, vinyl esters styrene, vinyl butyrate, and gamma methylglutamate the polymers and copolymer? of, acrylonitrile butadiene and isoprene, acrylates and ?ethacrylates poylethylene, polyamides and …

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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 February 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 10, 1998.
  • 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 3, 1978
GrantedFebruary 10, 1981
Term endedFebruary 10, 1998
Patent numberCA 1095409 A
Classification (IPC)D01F1/10 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 3, 1978Patent grantedFeb 10, 1981Term endedFeb 10, 1998

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