Patents by Inventor Ryder O. FitzGerald

Ryder O. FitzGerald 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).

  • Method and apparatus for measuring the electrophoretic mobility of migrating particles
    Patent number: 4661225
    Abstract: An apparatus for measuring the electrophoretic mobility of migrating particles in a suspending medium under the influence of an applied electric field comprising an electrophoresis chamber, means for illuminating the electrophoresis chamber, a microscope having an objective lens system and an ocular lens system, said microscope being positioned to view the electrophoresis chamber along an optical path extending from the electrophoresis chamber through the objective lens system and toward the ocular lens system, means for generating moving bands of visible energy into the ocular lens system of the microscope, means for adjusting the speed of the moving bands of visible energy; and means for determining the speed of the moving bands.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: April 28, 1987
    Assignee: Paper Chemistry Laboratory, Inc.
    Inventors: John G. Penniman, Ryder O. FitzGerald