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Expired Canadian patentCanada

Psyllium-containing products

CA 1331535 C · Owner: Burns, Larry Earl · Inventors: Burns, Larry Earl; Hafer, Karen Rose; Leis, Paul Dale Jr.

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

Psyllium husk comprising particle sizes distributed such that: less than about 15% is larger than about 80 mesh at least, about 45% is within the range of from about 80 mesh to about 200 mesh, and less than about 40% is smaller than about 200 mesh. In addition, psyllium-containing products for oral administration comprising small particle size psyllium husk according to the present invention are described.

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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 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 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.
FiledSeptember 22, 1989
GrantedAugust 23, 1994
Term endedAugust 23, 2011
Patent numberCA 1331535 C
Classification (IPC)A23L1/30 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 22, 1989Patent grantedAug 23, 1994Term endedAug 23, 2011

Sources & verification

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