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Expired Canadian patentCanada

Anaerobic sealant unaffected by water contamination

CA 1294085 C · Owner: Garcia, Maria L. · Inventors: Garcia, Maria L.; Malofsky, Bernard M.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An anaerobic sealant material comprises an acrylate or methacrylate monomer, a hydroperoxide or perester initiator an accelerator having -SO2NHCO-functionality and a transition, metal co-accelerator gives substantially reduced moisture sensitivity if the transition metal co-accelerator is a combination of a copper salt or complex at the level of 0.5-10 ppm copper and an iron complex or salt at the level of 0.5-60 ppm 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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 14, 1986
GrantedJanuary 7, 1992
Term endedJanuary 7, 2009
Patent numberCA 1294085 C
Classification (IPC)C09J4/00

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 14, 1986Patent grantedJan 7, 1992Term endedJan 7, 2009

Sources & verification

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