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Expired Canadian patentCanada

Dishwasher soil separator

CA 1107612 A · Owner: Whirlpool Corporation · Inventors: Dingler, Geoffrey L.; Johnson, Phillip P.

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 dishwasher having improved structure for separating food soil and the like from the dishwashing liquid. The soil separating structure is associated with a suction passage leading to a circulation pump of the dishwasher provided for effecting circulation of the dishwashing liquid from a lower sump portion of the dishwasher receptacle back to the dishwashing space for washing dishes and the like therein. The soil separator includes an accumulator wherein the soil is collected for subsequent discharge as desired and structure responsive to a centrifugal action in the suction passage for effecting a circulation of a portion of the dishwashing liquid between the suction passage and the …

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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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
  • 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 28, 1978
GrantedAugust 25, 1981
Term endedAugust 25, 1998
Patent numberCA 1107612 A
Classification (IPC)B08B3/02 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedDec 28, 1978Patent grantedAug 25, 1981Term endedAug 25, 1998

Sources & verification

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