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Expired Canadian patentCanada

Positive-type photosensitive electrodeposition coating composition

CA 1331927 C · Owner: Seko, Kenji · Inventors: Seko, Kenji; Kondo, Toshio; Akaki, Yuu

CIPO record

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Abstract From the Canadian patent

A positive-type photosensitive electrodeposition coating composition comprising as a main component a water-soluble or water-dispersible resin containing modified quinonediazidesulfone units represented by the following formula (I), (I), wherein R1 represents or , R2 represents a hydrogen atom, an alkyl group a cycloalkyl group or an alkyl ether group and, R3 represents an alkylene group a cycloalkylene group or an alkylene ether group in the molecule.

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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 September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 13, 2011.
  • 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 2, 1988
GrantedSeptember 13, 1994
Term endedSeptember 13, 2011
Patent numberCA 1331927 C
Classification (IPC)G03F7/02 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 2, 1988Patent grantedSep 13, 1994Term endedSep 13, 2011

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