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Expired Canadian patentCanada

Multiple-disc type filters

CA 1265066 C · Owner: Drori, Mordeki · Inventors: Drori, Mordeki

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 filter including a housing having an inlet connectable to an upstream pipe, and an outlet connectable to a downstream pipe; and a stack of discs disposed within the housing for separating solid particles from a fluid flowing between the discs from the upstream side of said stack to the downstream side thereof; characterized in that the stack includes a plurality of filter discs having a large surface area of their side faces formed with grooves and a spacer member interposed between each pair of adjacent filter discs the, spacer members having surfaces contacting only a portion of the grooved faces of the filter discs on the upstream side of the stack not contacted by the spacer members …

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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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 1985
GrantedJanuary 30, 1990
Term endedJanuary 30, 2007
Patent numberCA 1265066 C
Classification (IPC)B01D29/46 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 13, 1985Patent grantedJan 30, 1990Term endedJan 30, 2007

Sources & verification

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