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Expired Canadian patentCanada

Apparatus and method for removing fluid from a fibrous web

CA 1314747 C · Owner: Busker, Leroy H. · Inventors: Pulkowski, Jeffrey H.; Busker, Leroy H.; Macklem, Elizabeth A.

CIPO record

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Abstract From the Canadian patent

An apparatus and method is disclosed for removing fluid from a fibrous web. The apparatus includes a press member and a blanket which cooperates with the press member for defining therebetween an elongate pressing section such that the web is pressed between the press member and the blanket during passage through the pressing section, An elongate shoe urges the blanket towards the press member such that when the web passes through the pressing section, fluid is removed from the web. A heater is disposed adjacent to the press member for transferring heat to the web such that when the web passes through the press section, the web is subjected for an extended period to increased pressure 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 March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 8, 1988
GrantedMarch 23, 1993
Term endedMarch 23, 2010
Patent numberCA 1314747 C
Classification (IPC)D21F3/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 8, 1988Patent grantedMarch 23, 1993Term endedMarch 23, 2010

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