Patents by Inventor John T. Fisk

John T. Fisk 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).

  • High speed synchronization of plasma source/bias power delivery
    Patent number: 11935726
    Abstract: A radio frequency (RF) generator system includes first and second RF power sources, each RF power source applying a respective RF signal and second RF signal to a load. The first RF signal is applied in accordance with the application of the second RF signal. The application of the first RF signal is synchronized to application of the second RF signal. The first RF signal may be amplitude modulated in synchronization with the second RF signal, and the amplitude modulation can include blanking of the first RF signal. A frequency offset may be applied to the first RF signal in synchronization with the second RF signal. A variable actuator associated with the first RF power source may be controlled in accordance with the second RF signal.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: March 19, 2024
    Assignee: MKS Instruments, Inc.
    Inventors: Aaron T. Radomski, Benjamin J. Gitlin, Larry J. Fisk, II, Mariusz Oldziej, Aaron M. Burry, Jonathan W. Smyka, Alexei Marakhtanov, Bing Ji, Felix Leib Kozakevich, John Holland, Ranadeep Bhowmick
  • Defect control in the making of sheet glass by the fusion process
    Patent number: 7386999
    Abstract: A molten glass delivery system for use in producing sheet glass by a fusion process is provided. The delivery system includes a first conduit (9) which surrounds a portion of a second conduit (19) with a free surface (21) of molten glass (31) being formed between the two conduits. The first (9) and second (19) conduits are positioned with respect to one another so that the spatial relationship between the exit end (20) of the second conduit (19) and the free surface (21) results in neither substantial numbers of devitrification defects (27, 29) nor substantial numbers of blister defects (35) in finished sheets of devitrification sensitive glass, e.g., high silica LCD glass.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: June 17, 2008
    Assignee: Corning Incorporated
    Inventors: Philip M. Fenn, John T. Fisk, Randy L. Rhoads
  • Defect control in the making of sheet glass by the fusion process
    Publication number: 20030110804
    Abstract: A molten glass delivery system for use in producing sheet glass by a fusion process is provided. The delivery system includes a first conduit (9) which surrounds a portion of a second conduit (19) with a free surface (21) of molten glass (31) being formed between the two conduits. The first (9) and second (19) conduits are positioned with respect to one another so that the spatial relationship between the exit end (20) of the second conduit (19) and the free surface (21) results in neither substantial numbers of devitrification defects (27, 29) nor substantial numbers of blister defects (35) in finished sheets of devitrification sensitive glass, e.g., high silica LCD glass.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 19, 2003
    Applicant: CORNING INCORPORATED
    Inventors: Philip M. Fenn, John T. Fisk, Randy L. Rhoads