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Expired Canadian patentCanada

Process for the preparation of noble metal coated non-noble metal substrates, coated materials produced in accordance therewith and compositions utilizing the coated materials

CA 1339810 C · Owner: Ostolski, Marian J. · Inventors: Ostolski, Marian J.

CIPO record

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Abstract From the Canadian patent

A multi-coating step immersion coating process for producing a coating of a noble metal on a non-noble metal substrate wherein the noble metal is of a predetermined amount expressed as a percent of the total weight of coated product, and wherein the non-noble metal substrate is in the form of fine particles or a powder is disclosed. The process also utilizes inter-plating step and post-plating step rising step sequences which together with the use of the plurality of coating steps consistently results in high quality product having a uniform coating excellent, corrosion resistance and excellent electrical conductivity. Use of the coated products produced according to the process in a …

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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 April 14, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1989
GrantedApril 14, 1998
Term endedApril 14, 2015
Patent numberCA 1339810 C
Classification (IPC)H01B1/02 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedAug 28, 1989Patent grantedApril 14, 1998Term endedApril 14, 2015

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