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Expired Canadian patentCanada

Aluminum material coated with fluorine resin

CA 1260339 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Matsuyama, Fumio; Okazaki, Hiroshi; Watabe, Seiji

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Abstract From the Canadian patent

A fluorine resin coated aluminum material which is prepared by a process comprising the steps of coating a fluorine resin on an aluminum material having a magnesium content of from 0.01 to 10.0 wt%, and sintering the coated resin at a temperature not lower than the decomposition point of said fluorine resin.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 1987
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260339 A
Classification (IPC)B32B15/20 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMarch 19, 1987Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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