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Expired Canadian patentCanada

Treatment of textile desizing effluent

CA 1078747 A · Owner: Gaston County Dyeing Machine Company · Inventors: Irwin, Eugene S.; Keinath, Thomas M.; Russell, Robert Q.

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 process and apparatus is disclosed for treating textile desizing effluent so as to provide effective pollution abatement, and to render feasible the recovery of sizing material from the effluent for reuse as well as the conditioning of the effluent so that it may be recycled for desizing purposes.

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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 3, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 3, 1980
Term endedJune 3, 1997
Patent numberCA 1078747 A
Classification (IPC)D06L1/14 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 3, 1980Term endedJune 3, 1997

Sources & verification

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