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Expired Canadian patentCanada

Cloth treatment method

CA 1330380 C · Owner: Naigai Special Dyeing Co. Ltd. · Inventors: Iwami, Hideo

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A cloth treatment method comprising the steps of dipping a cloth to be treated in a treating solution squeezing the cloth, laying the cloth wet and impregnated with the treating solution over between two electrode rolls opposed in parallel to each other and applying a, voltage to the two electrode rolls to pass an electric current between the two electrode rolls through the treating solution with which the cloth is impregnated thereby a heat being generated due to electric resistance of the treating solution.

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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 June 28, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 20, 1989
GrantedJune 28, 1994
Term endedJune 28, 2011
Patent numberCA 1330380 C
Classification (IPC)D06P5/20 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedApril 20, 1989Patent grantedJune 28, 1994Term endedJune 28, 2011

Sources & verification

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