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Expired Canadian patentCanada

Welding electrode

CA 1053481 A · Owner: Vsesojuzny Nauchno-Issledovatelsky I Proektny Institut Tekhnologil Khimi Cheskogo I Neftyanogo Apparatostroenia · Inventors: Zhuchin, Vladimir N.; Frolov, Oleg F.; Kruzhkov, Vladimir I.

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

There is proposed an electrode for welding multilayer steels with a stainless steel cladding. According to the invention the electrode contains, (percent by weight): molybdenum 0.2-8, substance selected from the group consisting of rare-earth metals and their oxides 0.01-0.5, carbon 0.01-0.3 silicon up to 2.0, manganese 0.2-10.0, chromium 18.0-50.0 nickel 10.0-55.0, boron 0.001-0.008, iron the balance Owing to the specified chemical composition the proposed electrode imparts high corrosion resistance to a welded joint, mechanical properties as good as thoseof parent metal and precludes liability to cracking.

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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 May 1, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 1, 1979
Term endedMay 1, 1996
Patent numberCA 1053481 A
Classification (IPC)C22C30/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMay 1, 1979Term endedMay 1, 1996

Sources & verification

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