Patents by Inventor John F. Schultz

John F. Schultz 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).

  • Non-linear intractivity optical devices for free electron lasers
    Patent number: 5010555
    Abstract: The performance of free electron lasers can be greatly enhanced by including a non-linear optical element within the resonator for the oscillator. A system is described to enhance the peak or average power output of the FEL oscillator, or to modify the time structure of the oscillator output through the use of a non-linear element which modulates or diverts a portion of the optical wave circulating in the resonator.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: April 23, 1991
    Inventors: John M. J. Madey, Stephen V. Benson, John F. Schultz, Antonello Cutolo
  • Secure SCA broadcasting system including subscriber actuated portable receiving terminals
    Patent number: 4196310
    Abstract: A secure information broadcasting system including a central transmitting station for encoding data in binary form utilizing a keyword and transmitting a FM-SCA signal phase shift modulated by the encoded data. Each of a plurality of portable receiving terminals has an identification number stored therein. When a subscriber desires to display the broadcast information on his terminal, he enters a unique password which is combined with the identification number to generate the keyword. The keyword is utilized to decode the received binary data.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: April 1, 1980
    Assignee: Digital Data, Inc.
    Inventors: Aubry S. Forman, Charles A. Schultz, Jr., John F. Schultz
  • Secure SCA broadcasting system including subscriber actuated portable receiving terminals
    Patent number: 4112369
    Abstract: A secure information broadcasting system including a central transmitting station for encoding data in binary form utilizing a keyword and transmitting a FM-SCA signal phase shift modulated by the encoded data. Each of a plurality of portable receiving terminals has an identification number stored therein. When a subscriber desires to display the broadcast information on his terminal, he enters a unique password which is combined with the identification number to generate the keyword. The keyword is utilized to decode the received binary data.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: September 5, 1978
    Assignee: Digital Data, Inc.
    Inventors: Aubry S. Forman, Charles A. Schultz, John F. Schultz