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Expired Canadian patentCanada

Plating articles composed of thermoplastic resin and carbon black

CA 1111367 A · Owner: Sumitomo Naugatuck Co. Ltd. · Inventors: Ito, Akitoshi; Sakano, Hajime; Shoji, Toshihiro

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Abstract From the Canadian patent

Abstract of the Disclosure, A method for the preparation of a plated plastic product which comprises etching a molded product made of a resin composition comprising at least one kind of thermoplastic resin and carbon black having an oil absorption value of not less than 200 ml/100 g and a surface area of not less than 500 m2/g in a weight proportion of 100 : 3 - 100 and having a intrinsic volume resistivity of not more than 103 .OMEGA. .cm and then electro-, plating the product without any previous electroless plating. By using such a resin composition the product, can be directly electroplated thus eliminating many of the expensive and disadvantageous steps of the conventional electroless …

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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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • 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 12, 1978
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111367 A
Classification (IPC)C25D5/56

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 12, 1978Patent grantedOct 27, 1981Term endedOct 27, 1998

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