Patents by Inventor David Melville HUTTON

David Melville HUTTON 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: 11759910
    Abstract: A method of manufacturing a wafer holder, the wafer holder having a frame having at least one cavity capable of receiving and supporting a wafer grown from an ingot to be polished in a polishing machine, the at least one cavity having a cross sectional footprint at least equal to a cross sectional footprint of the wafer, the wafer having a thickness to cross sectional area ratio of 0.001 per unit length or less, a polymer film pad being permanently affixed in the at least one cavity, including cutting a frame from a layer of a thermoset or thermoplastic material having a thickness tolerance and measuring a thickness of the frame at at least one location thereon. The method further includes forming a cavity in the frame having a predetermined depth, and permanently affixing a polymer film pad in the cavity.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 19, 2023
    Assignee: P. R. HOFFMAN MACHINE PRODUCTS, INC.
    Inventors: David Melville Hutton, Gary William Wimmersberger, Mara Lindsay Pagano
  • Patent number: 10556317
    Abstract: A wafer holder is provided for use in a polishing machine. The wafer holder has a frame composed of a thermoset material and/or a thermoplastic material. The frame has at least one cavity for receiving and supporting a wafer to be polished in the polishing machine. A polymer film pad is permanently affixed in the at least one cavity.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 11, 2020
    Assignee: P.R. HOFFMAN MACHINE PRODUCTS INC.
    Inventors: David Melville Hutton, Gary William Wimmersberger, Mara Lindsay Pagano
  • Publication number: 20180085889
    Abstract: A wafer holder is provided for use in a polishing machine. The wafer holder has a frame composed of a thermoset material and/or a thermoplastic material. The frame has at least one cavity for receiving and supporting a wafer to be polished in the polishing machine. A polymer film pad is permanently affixed in the at least one cavity.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 29, 2018
    Inventors: David Melville HUTTON, Gary William WIMMERSBERGER, Mara Lindsay PAGANO
  • Publication number: 20170252893
    Abstract: A work piece holder is provided for use in a polishing machine. The work piece holder has a frame composed of a thermoset material and/or a thermoplastic material. The frame has at least one cavity for receiving and supporting a work piece to be polished in the polishing machine. A polymer film is permanently affixed in the at least one cavity.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Inventors: David Melville HUTTON, Gary William WIMMERSBERGER, Mara Lindsay PAGANO