Patents by Inventor John Mullen

John Mullen 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).

  • Low supply voltage line driver
    Patent number: 6731141
    Abstract: A line driver provides an output signal onto an output. The line driver includes a first current driver coupled to a first terminal of the output. The first current driver is capable of providing a first current to the first terminal that is sufficient to cause an output voltage having a magnitude Y to appear across the output. The first current driver includes a first plurality of elements to provide the first current to the first terminal of the output, each of the plurality of elements having a maximum voltage tolerance that is less than the magnitude Y.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: May 4, 2004
    Assignee: Cadence Design Systems, Inc.
    Inventors: Mark Summers, John Mullen
  • Cheese manufacture
    Patent number: 4959229
    Abstract: An enhancement of cheese yield and quality through a combination of direct acidification and starter cultures is obtained by preconditioning cold, raw milk by lowering the pH and heat treating. Then the milk is cooled and post-acidified prior to inoculating with starter culture.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: September 25, 1990
    Inventors: Malireddy S. Reddy, John Mullen, Clinton J. Washam, C. Gordon Brown, Charles C. Hunt