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Expired Canadian patentCanada

Process for forming protective film on coated surface of automobile

CA 2255644 C · Owner: Akasaka, Kensaku · Inventors: Akasaka, Kensaku; Obara, Hideki; Tojo, Hideaki

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

A strippable paint is poured down onto coated surfaces 1, 2 and 3 of an automobile V within regions to be protected from a plurality of nozzles 10 disposed in parallel in a widthwise direction of the automobile V above the coated surfaces 1, 2 and 3 of the automobile V while controlling the, number of nozzles which are used to discharge the strippable paint, in accordance with the extent of the regions to be protected. Thereafter, the strippable paint is spread over an entirety of the coated surfaces 1, 2 and 3 in the regions to be protected. Thus, the region covered by each of the nozzles can be relatively reduced to efficiently carry out the pouring-down of the strippable paint and 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

  • Filed May 28, 1997 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1997
GrantedApril 2, 2002
Term endedMay 28, 2017
Patent numberCA 2255644 C
Classification (IPC)B05D5/00 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMay 28, 1997Patent grantedApril 2, 2002Term endedMay 28, 2017

Sources & verification

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