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Expired Canadian patentCanada

Flame-sprayed ferrous alloy enhanced boiling surface

CA 1210281 A · Owner: Union Carbide Corporation · Inventors: Czikk, Alfred M.; Kern, James W.

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

A porous boiling surface and method of making, which surface comprises a flame-sprayed matrix of ferrous alloy powder on a metal substrate the matrix being characterized by having irregularly spaced, angled macropores which extend partly through the thickness of the matrix and which improve the boiling performance of the surface.

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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 August 26, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2003.
  • 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 6, 1983
GrantedAugust 26, 1986
Term endedAugust 26, 2003
Patent numberCA 1210281 A
Classification (IPC)B05D1/10 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedOct 6, 1983Patent grantedAug 26, 1986Term endedAug 26, 2003

Sources & verification

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