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Expired Canadian patentCanada

Method of degrading keratinaceous material and bacteria useful therefore

CA 1340710 C · Owner: North Carolina State University · Inventors: Williams, C. Michael; Shih, Jason C. H.

CIPO record

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Abstract From the Canadian patent

A method of degrading keratinaceous material is disclosed. The method comprises the steps of combining the keratinaceous material with Bacillus, licheniformis to form a fermentation media and then fermenting the media for a time sufficient to degrade the material. The method can be used to produce amino acids from keratinaceous material and to produce a hydrolyzed feather product useful as a feed additive from the keratinaceous material. A preferred keratinaceous material for carrying out the present invention is feather and a preferred bacteria for carrying out the invention is Bacillus licheniformis PWD-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 August 17, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 17, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1989
GrantedAugust 17, 1999
Term endedAugust 17, 2016
Patent numberCA 1340710 C
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedMarch 30, 1989Patent grantedAug 17, 1999Term endedAug 17, 2016

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