Patents by Inventor John M. Clark, Jr.

John M. Clark, 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).

  • Patent number: 5530193
    Abstract: Plants are transformed with the coat protein gene of one of various strains of Maize Dwarf Mosaic Virus (MDHV), and are protected from serious disease when challenged with exposure to the virus. The nucleic acid and amino acid sequences of MDMV strains A, B, and KS1 are given, as well as the constructs and vectors used to produce the transformed plants.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: June 25, 1996
    Inventors: John M. Clark, Jr., Joseph Jilka, Lynn E. Murry, Liliana E. C. Scarafia
  • Patent number: 4318868
    Abstract: A fuel-air metering system functioning according to precise flow and geometrical equations. An air throttle valve and fuel valve are positively linked with the flow crossectional area of each valve proportional to that of the other. Fuel pressure drop across the fuel valve is regulated in precise proportion to the pressure drop across the upstream orifice of a two orifice in series air flow system which bypasses the air throttle. Careful shaping of the air throttle, the bypass system orifices, the fuel valve, passage geometry, and the servo valve fuel regulation system results in an accurate porportioning of fuel flow to air flow.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: March 9, 1982
    Assignee: Automotive Engine Associates
    Inventors: M. Robert Showalter, John M. Clark, Jr., J. Wray Fogwell