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Expired Canadian patentCanada

Flexible corrosion resistant, thermosetting metal coating compositions

CA 1291586 C · Owner: Fleming, Kenneth Edward · Inventors: Fleming, Kenneth Edward; Pietrasiewicz, John Stanley, Jr.

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

The invention is concerned with a novel polymeric metal coating composition comprising (A) about 5 to 30% by weight of blocked urethane prepolymer, (B) about 2 to 25% by weight of at least one organic solvent-soluble phenolic resin, (C) about 3 to 18% by weight of a halogenated resin selected from the group consisting of halogenated rubber halogenated polyolefins and halogenated vinyl halide polymers and (D) inert solvent in an amount sufficient to provide an adhesive primer having a solids content in the range of about 10 to 70%, the weight percent of components (A) (B), and (C) being based on the combined weights of components (A), (B), (C) and (D). The coating composition according 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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 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.
FiledJuly 29, 1987
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291586 C
Classification (IPC)C08L75/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 29, 1987Patent grantedOct 29, 1991Term endedOct 29, 2008

Sources & verification

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