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Expired Canadian patentCanada

Use of fugitive plasticizer in autodeposition composition

CA 1280844 C · Owner: Amchem Products, Inc. · Inventors: Donovan, Joseph C.; Ahmed, Bashir M.

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Abstract From the Canadian patent

An autodeposition composition comprising water and resin solids, characterized in that the resin has a glass transition temperature of at least 55°C and in that a substantially water insoluble fugitive plasticizer is present in an amount sufficient to reduce the cracking tendency of autodeposited coatings formed from the composition.

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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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
  • 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 19, 1985
GrantedFebruary 26, 1991
Term endedFebruary 26, 2008
Patent numberCA 1280844 C
Classification (IPC)C09D5/08 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 19, 1985Patent grantedFeb 26, 1991Term endedFeb 26, 2008

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