Patents by Inventor Rita Johanna Mary Langford

Rita Johanna Mary Langford 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).

  • Antimicrobial bioabsorbable materials
    Patent number: 6719987
    Abstract: The invention provides bioabsorbable materials with antimicrobial coatings or powders which provide an effective and sustainable antimicrobial effect. Specifically, this invention provides bioabsorbable materials comprising a bioabsorbable substrate associated with one or more antimicrobial metals being in a crystalline form characterized by sufficient atomic disorder, such that the bioabsorbable material in contact with an alcohol or water based electrolyte, releases atoms, ion, molecules, or clusters of at least one antimicrobial metal at a concentration sufficient to provide an antimicrobial effect. The one or more antimicrobial metals do not interfere with the bioabsorption of the bioabsorbable material, and do not leave behind particulates larger than 2 &mgr;m, as measured 24 hours after the bioabsorbable material has disappeared.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: April 13, 2004
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Robert Edward Burrell, Hua Qing Yin, Stojan Djokic, Rita Johanna Mary Langford
  • Antimicrobial bioabsorbable materials
    Publication number: 20010055622
    Abstract: The invention provides bioabsorbable materials with antimicrobial coatings or powders which provide an effective and sustainable antimicrobial effect. Specifically, this invention provides bioabsorbable materials comprising a bioabsorbable substrate associated with one or more antimicrobial metals being in a crystalline form characterized by sufficient atomic disorder, such that the bioabsorbable material in contact with an alcohol or water based electrolyte, releases atoms, ion, molecules, or clusters of at least one antimicrobial metal at a concentration sufficient to provide an antimicrobial effect. The one or more antimicrobial metals do not interfere with the bioabsorption of the bioabsorbable material, and do not leave behind particulates larger than 2 &mgr;m, as measured 24 hours after. The bioabsorbable material has disappeared.
    Type: Application
    Filed: April 16, 2001
    Publication date: December 27, 2001
    Inventors: Robert Edward Burrell, Hua Qing Yin, Stojan Djokic, Rita Johanna Mary Langford