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Expired Canadian patentCanada

Apparatus and method for removing a coating from a coated linear material

CA 2070223 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Takimoto, Hiroaki; Suganuma, Hiroshi; Yoshikawa, Junichi

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

An object is to provide a coating removing apparatus and method in which it is not necessary to adjust the distance between edges of two, upper and lower, blades. An apparatus for removing a coating from a coated linear material in which, the upper blade is arranged so as to be brought into contact with the coating layer of the coated linear material by its, own weight, with a width in a direction perpendicular to the axis of the coated linear material.

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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 June 2, 1992 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2014.
  • 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 2, 1992
GrantedNovember 9, 1999
Term endedJune 2, 2012
Patent numberCA 2070223 C
Classification (IPC)G02B6/24 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJune 2, 1992Patent grantedNov 9, 1999Term endedJune 2, 2012

Sources & verification

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