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Expired Canadian patentCanada

Rumen-stable pellets

CA 1104497 A · Owner: Eastman Kodak Company · Inventors: Dannelly, Clarence C.

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

Pellets adapted to be orally administered to ruminants are disclosed. The pellets have a core comprising a nutrient and/or medicament, and a coating which protects the core in the environment of the rumen is also provided to allow utilization of the core in the abomasum and/or intestine. The coating comprises a polymeric matrix which is resistant to the mildly acidic environment of the rumen and a hydrophobic substance and a flake material dispersed throughout the continuous matrix. The core may contain a neutralizer if desired. The continuity of the polymeric matrix is destroyed in the more acidic environment of the abomasum. - 1 -

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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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
FiledAugust 16, 1978
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104497 A
Classification (IPC)A61K9/22 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 16, 1978Patent grantedJuly 7, 1981Term endedJuly 7, 1998

Sources & verification

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