Patents by Inventor Gail A. McCullough

Gail A. McCullough 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).

  • Sample concentrator
    Patent number: 4164464
    Abstract: To concentrate a material by separating it from a diluting medium, the combination of the material and medium is placed in one of two wells in the bottom of a plastic sample concentrator cell, with each well being closed at its bottom end by a different cellophane membrane in contact with a buffer solution in a different one of two buffer compartments. A buffer solution also connects the combination of material and medium in one well and the cellophane bottom of the other well within the sample concentration cell through a recess in the bottom of the sample concentration cell. A potential is applied across the two buffer compartments to cause the material to migrate by electrophoresis from the medium in one well, through the buffer in the sample concentrating cell and into the other well, where it is concentrated against the cellophane membrane for easy removal by pipetting.
    Type: Grant
    Filed: April 14, 1978
    Date of Patent: August 14, 1979
    Assignee: Instrumentation Specialties Company
    Inventors: William B. Allington, deceased, James W. Nelson, Arthur L. Cordry, Gail A. McCullough, Don E. Mitchell
  • Sample concentrator
    Patent number: 4159933
    Abstract: To concentrate a material by separating it from a diluting medium, the combination of the material and medium is placed in one of two wells in the bottom of a plastic sample concentrator cell, with each well being closed at its bottom end by a different cellophane membrane in contact with a buffer solution in a different one of two buffer compartments. A buffer solution also connects the combination of material and medium in one well and the cellophane bottom of the other well within the sample concentration cell through a recess in the bottom of the sample concentration cell. A potential is applied across the two buffer compartments to cause the material to migrate by electrophoresis from the medium in one well, through the buffer in the sample concentrating cell and into the other well, where it is concentrated against the cellophane membrane for easy removal by pipetting.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: July 3, 1979
    Assignee: Instrumentation Specialties Company
    Inventors: William B. Allington, deceased, James W. Nelson, Arthur L. Cordry, Gail A. McCullough, Don E. Mitchell