Patents by Inventor James L. Lawrence, Jr.

James L. Lawrence, 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).

  • Mass spectrometer filter
    Patent number: 4202080
    Abstract: A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: May 13, 1980
    Assignee: U.T.I.-Spectrotherm Corporation
    Inventors: Robert A. Holzl, Frederick P. Pickett, James L. Lawrence, Jr.
  • Mandrel for formation of mass spectrometer filter
    Patent number: 4106744
    Abstract: A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: August 15, 1978
    Assignee: Analog Technology Corporation
    Inventors: James L. Lawrence, Jr., Robert A. Holzl, Frederick P. Pickett
  • Mass spectrometer filter
    Patent number: 4079254
    Abstract: A process for producing mass filters for use in mass spectrometers. Several electrodes having precisely shaped surfaces must be held in precisely determined positions with respect to each other. Insulators are placed into position on the surface of a mandrel and a layer of metal is deposited over the mandrel and insulators to form a composite unitary structure, including the electrodes. The deposited metal overlying the insulators is then removed, electrically isolating the electrodes.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: March 14, 1978
    Assignee: Analog Technology Corporation
    Inventors: James L. Lawrence, Jr., Frederick P. Pickett, Robert A. Holzl