Patents by Inventor Philip C. Stevens

Philip C. Stevens 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).

  • Coaxial electron beam pumped laser
    Patent number: 4041415
    Abstract: An e-beam pumped laser employs a hollow cylindrical anode and cathode structure, the cathode being externally concentric with the anode. The lasing gas is contained within a chamber formed by the anode, an optical oscillator cavity being formed between mirrors placed at opposite ends of the anode chamber. The laser gas is excited by means of an e-beam directed radially inwardly from the cathode through the walls of the anode, which are formed of a thin foil, into the laser gas cavity.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: August 9, 1977
    Assignee: Northrop Corporation
    Inventors: Earl R. Ault, Philip C. Stevens, Robert H. Sipman, Robert S. Bradford, Jr.