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Expired Canadian patentCanada

Protective coating composition

CA 1259081 A · Owner: Rodgers, Jack L. · Inventors: Rodgers, Jack L.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure There is disclosed a protective, waterproof coating composition suitable for application to surfaces of concrete wood or metal to provide each surfaces with increased abrasion and chemical resistance. The composition comprises a blend of hydraulic cement in the range of 5 to 18 wt. % 200 mesh lime-, stone in the range of 20 to 50 wt % 0.5 to 6.0 wt. % polyvinyl, acetate, the balance of the blend 50 mesh limestone the blend, having admixed therewith a solution comprised 30 to 60 wt. % of a vinyl acetate-ethylene copolymer emulsion the remainder, water.

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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 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 5, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 16, 1986
GrantedSeptember 5, 1989
Term endedSeptember 5, 2006
Patent numberCA 1259081 A
Classification (IPC)C09D131/04 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 16, 1986Patent grantedSep 5, 1989Term endedSep 5, 2006

Sources & verification

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