Patents by Inventor Margaret S. Wooldridge

Margaret S. Wooldridge 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: 11732682
    Abstract: A sensor device system for detection of a liquid adjacent to the sensor having a glass fiber laminate substrate, at least one pair of comb electrodes formed on the glass fiber laminate substrate, a first of the pair of comb electrodes being interdigitated with a second of the pair of comb electrodes, the pair of comb electrodes defining geometric parameters; and a passivation coating covering the pair of comb electrodes.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 22, 2023
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Margaret S. Wooldridge, Luis Gutierrez Arsuaga
  • Publication number: 20210180553
    Abstract: A sensor device system for detection of a liquid adjacent to the sensor having a glass fiber laminate substrate, at least one pair of comb electrodes formed on the glass fiber laminate substrate, a first of the pair of comb electrodes being interdigitated with a second of the pair of comb electrodes, the pair of comb electrodes defining geometric parameters; and a passivation coating covering the pair of comb electrodes.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 17, 2021
    Inventors: Margaret S. WOOLDRIDGE, Luis Gutierrez ARSUAGA
  • Patent number: 10066580
    Abstract: An internal combustion engine having a fuel injector, a piston chamber, a piston slidably disposed in the piston chamber having a piston crown along a top surface, a head assembly having at least one pre-chamber separate from the piston chamber and in fluid communication with the piston chamber via at least one connecting orifice, and an ignition device disposed in the pre-chamber for igniting a fuel air mixture within the pre-chamber, thereby producing an ignition jet being introduced into the piston chamber via the at least one connecting orifice to ignite a fuel/air mixture in the piston chamber. The fuel/air mixture is passively introduced into the at least one pre-chamber during at least a compression stroke of the piston.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: September 4, 2018
    Assignees: The Regents of The University of Michigan, HYUNDAI AMERICA TECHNICAL CENTER, INC.
    Inventors: Dimitris Assanis, Margaret S. Wooldridge, Paul Neuman, Nayan Engineer
  • Publication number: 20170107938
    Abstract: An internal combustion engine having a fuel injector, a piston chamber, a piston slidably disposed in the piston chamber having a piston crown along a top surface, a head assembly having at least one pre-chamber separate from the piston chamber and in fluid communication with the piston chamber via at least one connecting orifice, and an ignition device disposed in the pre-chamber for igniting a fuel air mixture within the pre-chamber, thereby producing an ignition jet being introduced into the piston chamber via the at least one connecting orifice to ignite a fuel/air mixture in the piston chamber. The fuel/air mixture is passively introduced into the at least one pre-chamber during at least a compression stroke of the piston.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 20, 2017
    Inventors: Dimitris ASSANIS, Margaret S. WOOLDRIDGE, Paul NEUMAN, Nayan ENGINEER
  • Publication number: 20040050207
    Abstract: Low nanosized combusted products are obtained by introducing at least one volatile metal compound into the flame of a non-premixed, multi-element diffusion flame burner which exhibits a one-dimensional temperature profile. The combustion process generates a stable environment favoring formation of very small particles of uniform composition. Adjusting burner stoichiometry enables production of zero valent metal powders and metal compounds of low or intermediate oxidation states as well as the usual more highly oxidized species.
    Type: Application
    Filed: July 16, 2003
    Publication date: March 18, 2004
    Inventors: Margaret S. Wooldridge, Paul V. Torek, David L. Hall, Tiffany A. Miller