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Expired Canadian patentCanada

Procaryotic carbonyl hydrolases

CA 1339893 C · Owner: Ferrari, Eugenio · Inventors: Estell, David Aaron; Henner, Dennis James; Ferrari, Eugenio

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Abstract From the Canadian patent

Methods and vectors are provided for the production of procaryotic carbonyl hydrolases in recombinant systems. DNA which encodes such hydrolases are mutated at predetermined regions by known methods or by a novel point mutagenesis method in order to generate mutant hydrolases. Particular point mutations in carbonyl hydrolases such as subtilisin result in modifications of oxidation stability, Km, Kcat, Kcat/Km ratio substrate specificity specific, activity or pH-activity profiles. These mutated hydrolases are particularly useful in laundry compositions. Mutations in the genes encoding the subtilisin or neutral protease of bacillus yield substantially normally sporulating bacillus strains …

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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 June 2, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 22, 1984
GrantedJune 2, 1998
Term endedJune 2, 2015
Patent numberCA 1339893 C
Classification (IPC)C12N15/57 +2 more

Timeline

Timeline From CIPO dates

19851989199319972001200520092013Application filedJune 22, 1984Patent grantedJune 2, 1998Term endedJune 2, 2015

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