Patents by Inventor Gerald E. McWilliams

Gerald E. McWilliams 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 of liquid phase epitaxial growth
    Patent number: 4263064
    Abstract: An improved method of liquid phase epitaxial growth of III-V compound on an nP substrate by growing the epitaxial layer in an atmosphere of H.sub.2 with 10.sup.-5 to 10.sup.-4 mole fraction PH.sub.3.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: April 21, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Arthur R. Clawson, Wing Y. Lum, Gerald E. McWilliams
  • Device for determining the state of charge in batteries
    Patent number: 3969667
    Abstract: A device for determining the state of charge in batteries. The battery un test is discharged to its maximum capability by controlling the discharge current in a linear manner. The product of the current and battery voltage is recorded until the battery power reaches maximum at the maximum power point. The readings, peak power and the potential of the battery at the peak power, are held on meters by peak read and hold and track and hold circuits, respectively. From the readings obtained the state of charge can be determined by using a calibration curve for the type of battery being tested.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: July 13, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Gerald E. McWilliams