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Expired Canadian patentCanada

Low temperature curing epoxy resin aminoplast, perfluoro resin coating compositions

CA 1160786 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Emerick, Dennis P.

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

A coating composition comprising a dispersion of an epoxy resin, a nitrogen resin crosslinker such as a melamine formaldehyde a, particulate fluorocarbon such as PTFE and citric, acid can be applied to substrates such as polysulfones and cured at low temperatures on the order of 107°C. The resulting, coating is especially useful as a barrier to seal the surface of the substrate and to improve abrasion resistance.

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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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2001.
  • 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 27, 1981
GrantedJanuary 17, 1984
Term endedJanuary 17, 2001
Patent numberCA 1160786 A
Classification (IPC)B32B27/28 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedOct 27, 1981Patent grantedJan 17, 1984Term endedJan 17, 2001

Sources & verification

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