Patents by Inventor Tung M. Huang

Tung M. Huang 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).

  • Ink valve for marking systems
    Patent number: 4555719
    Abstract: A fast acting ink valve adapted to be used in conjunction with the nozzle of an ink jet printing system is disclosed. A flexible diaphragm modulates flow through a valve chamber. A spring biases the diaphragm to a sealed position to prevent flow. Ink pressure in the marking system unseals the diaphragm permitting flow. Unlike check valves, the invention has minimal pressure drop due to the location of the bias spring outside the ink flow path.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: November 26, 1985
    Assignee: Videojet Systems International, Inc.
    Inventors: George Arway, Frank Eremity, Tung M. Huang
  • Carousel for chemical analyzer or the like
    Patent number: D287633
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: January 6, 1987
    Assignee: Abbott Laboratories
    Inventors: Robert C. Hollar, Tung M. Huang
  • Sample cup or the like
    Patent number: D298652
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: November 22, 1988
    Assignee: Abbott Laboratories
    Inventors: Robert C. Hollar, Tung M. Huang