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Expired Canadian patentCanada

Fabrics having hydrophilic and hydrophobic coatings

CA 1329742 C · Owner: Albany International Corp. · Inventors: Barnewall, James M.

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

This invention is directed to press fabrics having improved water removal capability. More particularly this, invention is directed to the improvement of the water removal capability of press fabrics by applying hydrophobic and/or hydrophilic coatings. Even more particularly this invention, is directed to a method of modifying a fabric for a papermaking machine which comprises the steps of: (a) applying a hydrophilic or hydrophobic coating to the surface of a fabric to form a layer thereon; (b) during said coating to form a layer: (c) applying to said dried layer a hydrophobic coating if a hydrophilic coating was used in step (a) or a hydrophilic coating if a hydrophobic coating was used in …

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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 May 24, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 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.
FiledJune 9, 1989
GrantedMay 24, 1994
Term endedMay 24, 2011
Patent numberCA 1329742 C
Classification (IPC)B05D3/02 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJune 9, 1989Patent grantedMay 24, 1994Term endedMay 24, 2011

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