Patents by Inventor Pang K. Lee

Pang K. Lee 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: 4818355
    Abstract: A system for decomposing aromatic hydrocarbons, such as furans, dioxins and PCBs, uses a glow discharge device as an electrochemical reactor. A gas, containing an aromatic hydrocarbon, is supplied at approximately atmospheric pressure to the glow discharge device which includes a pair of electrodes separated by a gap. The gas flows through the gap between the electrodes, one of which is preferably a planar electrode and the other of which is preferably a plurality of pins arranged perpendicular to the planar electrode. The electrodes are connected to a direct current power source via a ballast. The electrical potential across the electrodes is adjusted in conjunction with the flow rate to provide sufficient energy to break the benzene rings in the aromatic hydrocarbon, while preventing arcing across the electrodes.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: April 4, 1989
    Assignee: Westinghouse Electric Corp.
    Inventors: Ira E. Kanter, Pang K. Lee
  • Patent number: 4537661
    Abstract: The invention provides a method for the continuous monitoring of the oxygen or hydrogen concentrations in a steam system with a solid electrolyte oxygen analyzer. The operating temperature of the analyzer is adjusted to about 500.degree. C. and the reference gas used for the analyzer is air or oxygen-inert gas mixture. Under operating conditions, an oxygen or hydrogen level of low parts per billion in superheated or saturated steam can be identified and measured. This technique is specifically useful for continuously monitoring the air inleakage, that is, the oxygen contents in steam and for controlling the corrosion intensity that is, the hydrogen levels in steam in, for example, steam turbine systems in power plants.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: August 27, 1985
    Assignee: Westinghouse Electric Corp.
    Inventors: Pang K. Lee, William M. Hickam
  • Patent number: 4240830
    Abstract: Graphite particles as small as 38 microns are cleaned, dried and chemically plated with copper or silver. One or multiple chemical platings may be carried out to provide a uniform and thick metal coating. The plated powders are dried and then molded into a desired shape under heavy pressure in a hydraulic press or the like after which the molded shape is sintered under a hydrogen atmosphere for the subsequent fabrication into monolithic or multi-elemental brushes for high-current collectors.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: December 23, 1980
    Assignee: Westinghouse Electric Corp.
    Inventor: Pang K. Lee
  • Patent number: 4008171
    Abstract: A process for reducing the volume of spent radioactive ion exchange resins which have been used for conditioning water circulated through a nuclear reactor. The spent resins are discharged from the reactor system as radioactive wastes to a spent resin storage tank in the form of a slurry. The slurry is first vacuum dewatered to remove the free water and then the intrinsic water in the wet resin beads is removed by drying in a vacuum fluidized bed chamber utilizing superheated steam which also acts to fluidize the bed. Further drying is accomplished by spraying the partially dried resin and superheated steam through a steam injected two-fluid nozzle for further extraction of intrinsic water from the resins. The steam is discharged to a condenser and the dried resins to an evacuated disposal drum. Approximate 4:1 volume reductions from the resin-water slurry to the dried resin is obtainable by practicing the process.
    Type: Grant
    Filed: September 10, 1973
    Date of Patent: February 15, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: Erich W. Tiepel, Pang K. Lee, Arnold S. Kitzes, Donald L. Grover