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Expired Canadian patentCanada

Overfinish for abrasion resistant zero twist fabric

CA 1332548 C · Owner: Alliedsignal Inc. · Inventors: Marshall, Robert Moore

CIPO record

Overview

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

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Abstract From the Canadian patent

Abrasion resistant fabric can be woven from substantially untwisted polyester or polyamide yarn and treated with an overfinish composition to give enhanced abrasion resistance. The overfinish composition comprises effective amounts of a specified crystallizable copolymer consisting essentially of linear polyethylene terephthalate segments and polyoxyethylene terephthalate segments, a specified polyethyleneglycol ester or alcohol and sodium dialkylnaphthalene.

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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 October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1988
GrantedOctober 18, 1994
Term endedOctober 18, 2011
Patent numberCA 1332548 C
Classification (IPC)D06M15/50

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 10, 1988Patent grantedOct 18, 1994Term endedOct 18, 2011

Sources & verification

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