Patents by Inventor John P. Sargent

John P. Sargent 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: 8696404
    Abstract: Systems for recycling slurry materials during polishing processes are provided. One system includes a polisher having an inlet and drain outlet, and a slurry storage tank to supply a slurry including a preselected material to the polisher inlet, and a recycling assembly including a cross flow filter including an inlet to receive a waste slurry including the preselected material from the polisher drain outlet, where the cross flow filter is configured to concentrate the preselected material in an outlet slurry, a density meter configured to measure a concentration of the preselected material in the filter outlet slurry, a valve coupled to the filter outlet and configured to supply the slurry storage tank, and a controller coupled to the density meter and valve, where the controller is configured to open the valve when the concentration of the preselected material reaches a first concentration threshold.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 15, 2014
    Assignee: WD Media, LLC
    Inventors: Qi Sun, David Graves, John P. Sargent, Lindsey A. Hamilton
  • Publication number: 20130165029
    Abstract: Systems for recycling slurry materials during polishing processes are provided. One system includes a polisher having an inlet and drain outlet, and a slurry storage tank to supply a slurry including a preselected material to the polisher inlet, and a recycling assembly including a cross flow filter including an inlet to receive a waste slurry including the preselected material from the polisher drain outlet, where the cross flow filter is configured to concentrate the preselected material in an outlet slurry, a density meter configured to measure a concentration of the preselected material in the filter outlet slurry, a valve coupled to the filter outlet and configured to supply the slurry storage tank, and a controller coupled to the density meter and valve, where the controller is configured to open the valve when the concentration of the preselected material reaches a first concentration threshold.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Applicant: WD MEDIA, INC.
    Inventors: Qi Sun, David Graves, John P. Sargent, Lindsey A. Hamilton
  • Patent number: D279478
    Type: Grant
    Filed: February 11, 1983
    Date of Patent: July 2, 1985
    Inventor: John P. Sargent