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Expired Canadian patentCanada

Molten metal plating method and apparatus and plating preventing agent therefor

CA 1137361 A · Owner: Hitachi, Ltd. · Inventors: Kimura, Tomoaki; Furutani, Yasumasa; Ito, Masahiko

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Abstract From the Canadian patent

The present invention relates to a molten metal partial plating method, and apparatus therefor in which a plating preventing film is formed on an area of the substrate material not to be plated, and the material is then entirely immersed in a plating bath of a molten metal. The primary object of the present invention is to provide a plating preventing film having an excellent plating preventing effect on the area not to be plated, of the substrate material. The plating preventing film should have good adherence, and should be capable of being produced with ease at a low cost, so that a steel plate having one surface completely plated can be obtained very easily. This object can be attained …

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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 December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 2, 1979
GrantedDecember 14, 1982
Term endedDecember 14, 1999
Patent numberCA 1137361 A
Classification (IPC)B05D1/32 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedFeb 2, 1979Patent grantedDec 14, 1982Term endedDec 14, 1999

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