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Expired Canadian patentCanada

High strength and high toughness welding material

CA 1198613 A · Owner: Mitsubishi Jukogyo Kabushiki Kaisha · Inventors: Izaki, Susumu; Hirayama, Fumitoshi; Tanaka, Kisaburoo

CIPO record

Overview

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Abstract From the Canadian patent

A high strength and high toughness welding material containing: C: 0.05-0.15%, Si: 0.25-0.70% Mn: 0.60-1.80%, Ni: 4.5-11.0%, Cr: 0.20-1.20% Mo: 0.20-0.60%, Ti: 0.03-0.12%, Cr+Mo: from 0.40% to 0.030x(Ni%)2 by weight and the balance essentially iron.

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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 31, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 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.
FiledNovember 18, 1982
GrantedDecember 31, 1985
Term endedDecember 31, 2002
Patent numberCA 1198613 A
Classification (IPC)C21D9/50 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedNov 18, 1982Patent grantedDec 31, 1985Term endedDec 31, 2002

Sources & verification

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