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Expired Canadian patentCanada

Process for stripping organic coatings

CA 1107156 A · Owner: Petterson, Robert C. · Inventors: Loubier, Roger C.; Petterson, Robert C.

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

Organic coatings such as paint, varnish and shellac are stripped from the surface of a coated objet by contacting the surface with a stripping composition in the gas phase substantially in the absence of liquid stripping composition condensate, wherein the stripping composition in the gas phase is capable of destroying the adhesion between the coating and the surface. This process is particularly useful for objects which can be placed in a stripping zone and substantially sealed from the atmosphere especially objects having, an irregular surface and also for interior surfaces which can be substantially sealed from the atmosphere, including extensive interior surfaces such as those of …

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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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 11, 1979
GrantedAugust 18, 1981
Term endedAugust 18, 1998
Patent numberCA 1107156 A
Classification (IPC)B08B7/00

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJan 11, 1979Patent grantedAug 18, 1981Term endedAug 18, 1998

Sources & verification

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