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Expired Canadian patentCanada

Probiotic-type products

CA 1323519 C · Owner: Porter, William Leslie · Inventors: Porter, William Leslie

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

An animal feed supplement for promoting growth in animals and method of manufacture thereof wherein non-pathogenic bacteria are grown in a liquid culture the bacterial, cells are isolated from the bulk of the fluid substrate and are killed, as by autoclaving, boiling exposing to, altered pH, or subjecting to fluctuating pressure or sound or microwaves, and the isolated killed cells are combined with a carrier to provide a solid or liquid product ready for use as an animal feed supplement.

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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 1, 1988
GrantedOctober 26, 1993
Term endedOctober 26, 2010
Patent numberCA 1323519 C
Classification (IPC)A23K1/16 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedFeb 1, 1988Patent grantedOct 26, 1993Term endedOct 26, 2010

Sources & verification

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