Patents by Inventor Lu Chow

Lu Chow 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).

  • Process for pulse flow double-jet precipitation
    Patent number: 5549879
    Abstract: The present invention is a method of manufacturing silver halide grains using a double jet precipitation process. Soluble salt and soluble halide salt are introduced at a high velocity into a well mixing vessel containing silver halide grains for a time t. The introduction is halted for a time T, wherein T>t. No emulsion is removed from the reactor. The present invention provides precise control of the silver halide grain growth and provides improved scaleability.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: August 27, 1996
    Assignee: Eastman Kodak Company
    Inventor: Lu Chow
  • Sub-partitioned vector quantization of probability density functions
    Patent number: 5535305
    Abstract: A speech recognition memory compression method and apparatus subpartitions probability density function (pdf) space along the hidden Markov model (HMM) index into packets of typically 4 to 8 log-pdf values. Vector quantization techniques are applied using a logarithmic distance metric and a probability weighted logarithmic probability space for the splitting of clusters. Experimental results indicate a significant reduction in memory can be obtained with little increase in overall speech recognition error.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: July 9, 1996
    Assignee: Apple Computer, Inc.
    Inventors: Alejandro Acero, Yen-Lu Chow, Kai-Fu Lee
  • Particle size probe for silver halide emulsion
    Patent number: 5448160
    Abstract: The present invention concerns a method and apparatus for determining average particle size of silver halide grains in a solution or emulsion containing silver ions and excess halide ions. The potential of the silver ion in solution (E.sub.d) is measured using a silver electrode and the potential of the silver ion in solution with infinitely large silver halide particles (E.sub.e) is measured using a silver electrode coated with silver halide. The molecular volume (v) of the solute is calculated and the average particle size (d) is calculated from the following formula: ##EQU1## wherein F is the Faraday constant and (s) is the surface energy of the average particle size per unit area.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: September 5, 1995
    Assignee: Eastman Kodak Company
    Inventor: Lu Chow
  • Battery with metal foil coated plastic housing
    Patent number: 5134046
    Abstract: A battery having a metallic foil coated rigid plastic housing impedes adverse affects on the battery electrolyte.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: July 28, 1992
    Assignee: Ultralife Batteries, Inc.
    Inventors: Lu Chow, William H. Cook, Seshadri N. Prativadi