Patents by Inventor Derek Douglas

Derek Douglas 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).

  • Compositions and Methods for Nucleic Acid Extraction from Biological Samples
    Publication number: 20070172875
    Abstract: Methods and compositions for extracting nucleic acids from a biological sample are provided. The extraction compositions contain a protease enzyme such as proteinase K at alkaline pH with little or no surfactant present. Extraction can be efficiently performed in 60 minutes or less at room temperature for certain mammalian tissue samples and at elevated temperatures for certain plant tissues.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 26, 2007
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Scott Weber, Derek Douglas, Carol Kreader
  • Compositions and Methods for Nucleic Acid Extraction from Biological Samples
    Publication number: 20070172874
    Abstract: Methods and compositions for extracting nucleic acids from a biological sample are provided. The extraction compositions contain a protease enzyme such as proteinase K at alkaline pH with little or no surfactant present. Extraction can be efficiently performed in 60 minutes or less at room temperature for certain mammalian tissue samples and at elevated temperatures for certain plant tissues.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 26, 2007
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Scott Weber, Derek Douglas, Carol Kreader
  • Compositions and Methods for Nucleic Acid Extraction from Biological Samples
    Publication number: 20070166750
    Abstract: Methods and compositions for extracting nucleic acids from a biological sample are provided. The extraction compositions contain a protease enzyme such as proteinase K at alkaline pH with little or no surfactant present. Extraction can be efficiently performed in 60 minutes or less at room temperature for certain mammalian tissue samples and at elevated temperatures for certain plant tissues.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 19, 2007
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Scott Weber, Derek Douglas, Carol Kreader
  • Compositions and Methods for Nucleic Acid Extraction from Biological Samples
    Publication number: 20070166752
    Abstract: Methods and compositions for extracting nucleic acids from a biological sample are provided. The extraction compositions contain a protease enzyme such as proteinase K at alkaline pH with little or no surfactant present. Extraction can be efficiently performed in 60 minutes or less at room temperature for certain mammalian tissue samples and at elevated temperatures for certain plant tissues.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 19, 2007
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Scott Weber, Derek Douglas, Carol Kreader
  • Compositions and Methods for Nucleic Acid Extraction from Biological Samples
    Publication number: 20070166751
    Abstract: Methods and compositions for extracting nucleic acids from a biological sample are provided. The extraction compositions contain a protease enzyme such as proteinase K at alkaline pH with little or no surfactant present. Extraction can be efficiently performed in 60 minutes or less at room temperature for certain mammalian tissue samples and at elevated temperatures for certain plant tissues.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 19, 2007
    Applicant: SIGMA-ALDRICH CO.
    Inventors: Scott Weber, Derek Douglas, Carol Kreader
  • Quinoline-containing .alpha.-ketoamide cysteine and serine protease inhibitors
    Patent number: 6083944
    Abstract: The present invention is directed to quinoline-containing .alpha.-ketoamide inhibitors of cysteine and serine proteases are disclosed. Methods for making these compounds, and methods for using the same are also disclosed.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: July 4, 2000
    Assignees: Cephalon, Inc., Smithkline Beecham Corp.
    Inventors: Sankar Chatterjee, John P. Mallamo, Derek Douglas Dunn, Kurt Allen Josef, Zi-Qiang Gu, Robert A. Daines, William Dennis Kingsbury, Israel Pendrak, Kelvin C. Sham