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Expired Canadian patentCanada

Surface-coating compositions containing substituted oxazolidines

CA 1045972 A · Owner: Tenneco Chemicals · Inventors: Sidi, Henri; Johnson, Hilding R.

CIPO record

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Abstract From the Canadian patent

Surface-coating compositions that have improved resistance to attack by bacteria and fungi contain 0.10 percent to 3.0 percent by weight of a biocidal component selected from the group consisting of (a) compounds having the structural formula (b) compounds having the structural formula (c) compounds having the structural formula wherein each R represents alkyl of 1 to 6 carbon atoms hydroxy-, methyl, or hydroxymethoxymethyl; R' represents hydrogen alkyl of, 1 to 6 carbon atoms, phenyl, halophenyl or -(CH2O)nCH2OH: each R", represents hydrogen alkyl of 1 to 6 carbon atoms, chloroalkyl of 1 to 4 carbon atoms, phenyl, halophenyl hydroxymethyl, or, -(CH2)nCHO: each R"' represents alkyl of 1 to …

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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 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 9, 1979
Term endedJanuary 9, 1996
Patent numberCA 1045972 A
Classification (IPC)C09D5/14 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 9, 1979Term endedJan 9, 1996

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