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Expired Canadian patentCanada

Non-water wettable granular material and method of preparing same

CA 1232123 A · Owner: Cattus, Limited · Inventors: Lander, Harry L.

CIPO record

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

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Abstract From the Canadian patent

Hydrophobic substantially non-absorbent substantially, non-water wettable granular material suitable or use as a bedding for animals or for use as litter material in a waste receptacle for animals comprises particle-form granular material coated and/or impregnated with wax or paraffin or similar hydrophobic non-water wettable matonal and provided with an additional top coating or layer of a substantially non-water wettable material. A particularly useful material comprises granulated corn cob initially coated or impregnated with paraffin wax and subsequently coated or layered with a top coating or layer of a cured epoxy resin.

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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 February 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 10, 1984
GrantedFebruary 2, 1988
Term endedFebruary 2, 2005
Patent numberCA 1232123 A
Classification (IPC)A01K1/01

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedOct 10, 1984Patent grantedFeb 2, 1988Term endedFeb 2, 2005

Sources & verification

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