Patents by Inventor Dave Chastain, Jr.

Dave Chastain, Jr. 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).

  • Multi-purpose blood diluent for use in electronic blood analysis instrumentation
    Patent number: 4244837
    Abstract: A multi-purpose blood diluent especially suitable for use in electronic enumeration and sizing of blood cells, determination of hemoglobin concentration and their collective indices and platelet parameters in a single blood sample by means of suitable electronic instrumentation. The diluent is characterized as azide-free and capable of affording accurate, reproducible hematological test results from the said suitable electronic instrumentation. The diluent employs a chelating agent which functions as a bacteriostat and fungistat agent to prevent adverse growth of microorganisms, methohexital sodium barbituate as a compatible stabilizing agent for maintaining desired morphology of red blood cells, and an inorganic metallic sulfate for suppressing turbidity caused by abnormal globulins and/or high leukocyte counts which are encountered in certain blood samples.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: January 13, 1981
    Assignee: Coulter Electronics, Inc.
    Inventors: Harold R. Crews, Dave Chastain, Jr., Stephen Ledis
  • Multi-purpose blood diluent for use in electronic blood analysis instrumentation
    Patent number: 4213876
    Abstract: A multi-purpose blood diluent especially suitable for use in electronic enumeration and sizing of blood cells, determination of hemoglobin concentration and their collective indices and platelet parameters in a single blood sample by means of suitable electronic instrumentation. The diluent is characterized as azide-free and capable of affording accurate, reproducible hematological test results from the said suitable electronic instrumentation. The diluent employs a chelating agent which functions as a bacteriostat and fungistat agent to prevent adverse growth of micro-organisms and a compatible stabilizing agent to maintain desired morphology of red blood cells and an inorganic metallic sulfate for suppressing turbidity caused by abnormal globulins and/or high leukocyte counts which are encountered in certain blood samples.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: July 22, 1980
    Assignee: Coulter Electronics, Inc.
    Inventors: Harold R. Crews, Dave Chastain, Jr., Stephen L. Ledis