Patents by Inventor Hélène Bergeron

Hélène Bergeron has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pectate lyases with increased thermostability and/or enzymatic activity
    Patent number: 8062877
    Abstract: Using site-directed mutagenesis to mutate the Xanthomonas campestris pectate lyase gene, variants of Xanthomonas campestris pectate lyase with improved thermostability and/or enzymatic activity have been expressed in Escherichia coli, and then isolated and purified. The mutant Xanthomonas campestris pectate lyases are more effective than the wild-type enzyme, also expressed in E. coli, in removing pectic compounds from natural hemp fiber.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: November 22, 2011
    Assignee: National Research Council of Canada
    Inventors: Zhizhuang Xiao, Hélène Bergeron, Stephan Grosse, Peter C. K. Lau
  • Pectate lyases with increased thermostability and/or enzymatic activity
    Publication number: 20100285569
    Abstract: Using site-directed mutagenesis to mutate the Xanthomonas campestris pectate lyase gene, variants of Xanthomonas campestris pectate lyase with improved thermostability and/or enzymatic activity have been expressed in Escherichia coli, and then isolated and purified. The mutant Xanthomonas campestris pectate lyases are more effective than the wild-type enzyme, also expressed in E. coli, in removing pectic compounds from natural hemp fiber.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 11, 2010
    Inventors: Zhiahuang Xiao, Hélène Bergeron, Stephan Grosse, Peter C.K. Lau