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Expired Canadian patentCanada

Clad metal joint closure applied by plasma arc spray

CA 1194560 A · Owner: Solutia Inc. · Inventors: Siebert, Oliver W.

CIPO record

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Abstract From the Canadian patent

This invention relates to a method of providing impervious closure joints for clad metals which comprises welding abutting portions of the backing metal layer of pieces of clad metals characterized by applying an impervious coating over the joint between the pieces and over adjacent portions of the surface of the cladding metal layer of such pieces by plasma arc spray. A clad metal joint is also provided in which clad metal members having a cladding metal surface layer and a backing metal layer are joined by a fusion weld joining opposing portions of the backing layers. The joint has an impervious plasma arc spray overlay thereover between the cladding metal surface layers and which extends …

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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 1, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 1982
GrantedOctober 1, 1985
Term endedOctober 1, 2002
Patent numberCA 1194560 A
Classification (IPC)B23K9/23 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedSep 10, 1982Patent grantedOct 1, 1985Term endedOct 1, 2002

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