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Expired Canadian patentCanada

Low temperature curable aqueous electrodepositable coating compositions

CA 1297612 C · Owner: Ppg Industries, Inc. · Inventors: Niederst, Ken W.; Sandala, Michael G.; Coleridge, Edward R.

CIPO record

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Abstract From the Canadian patent

An aqueous, cationically electrodepositable coating composition is composed of a film-forming electrodepositable source of (i) sulfonium or phosphonium groups, (ii) moieties capable of crosslinking with (i) and, (iii) moieties capable of catalyzing the crosslinking reaction between (i) and (ii).

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.
FiledDecember 8, 1987
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297612 C
Classification (IPC)C09D5/44

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 8, 1987Patent grantedMarch 17, 1992Term endedMarch 17, 2009

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