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Expired Canadian patentCanada

Process and apparatus for the continuous treatment of textile material in rope form

CA 1234955 A · Owner: Hoechst Aktiengesellschaft · Inventors: Von Der Eltz, Hans-Ulrich

CIPO record

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

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Abstract From the Canadian patent

Abstract of the disclosure: The crease displacement and the achievable dilution factor in the conventional continuous pretreatment or aftertreatment operations of fabric ropes with liquid means in rope washers are not adequate and consequently, the water consumption necessary for satisfactory results is too high. To date the existing problems can only be solved with squeeze rollers which, however have an ad-, verse effect on the goods. According to the invention the textile rope is now introduced into a treatment store of a liquid-operated jet apparatus, is subjected to the action of the treatment liquor, is then carried along by a steam- or more generally gas-operated jet arrangement 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 April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 28, 1984
GrantedApril 12, 1988
Term endedApril 12, 2005
Patent numberCA 1234955 A
Classification (IPC)D06B3/28 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJune 28, 1984Patent grantedApril 12, 1988Term endedApril 12, 2005

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