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Expired Canadian patentCanada

Polyester fiberfill

CA 1306102 C · Owner: E. I. Du Pont De Nemours And Company · Inventors: Marcus, Ilan

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

Blends of polyester fiberfill and binder fiber wherein the fiberfill is coated with a hydrophillic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product including combinations of, improved durability soft hand, good bonding, reduced flammability and improved moisture transport.

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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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.
FiledOctober 20, 1987
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306102 C
Classification (IPC)D04H1/54

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 20, 1987Patent grantedAug 11, 1992Term endedAug 11, 2009

Sources & verification

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