Patents by Inventor David Guan

David Guan 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).

  • Ovens for atomic clocks and related methods and atomic clocks
    Patent number: 12349240
    Abstract: Ovens for atomic clocks may include a body including a cavity within the body. A plurality of heating elements may be distributed around the body, each heating element of the plurality including coils of electrically resistive material. An arrangement of the plurality of heating elements may be such that far fields of magnetic fields having opposite polarities induced by respective coils of the heating elements overlap.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: July 1, 2025
    Assignee: Microchip Technology Incorporated
    Inventors: Lichung Ha, Jay Noble, David Guan, Armando T. Martins
  • OVENS FOR ATOMIC CLOCKS AND RELATED METHODS AND ATOMIC CLOCKS
    Publication number: 20220039209
    Abstract: Ovens for atomic clocks may include a body including a cavity within the body. A plurality of heating elements may be distributed around the body, each heating element of the plurality including coils of electrically resistive material. An arrangement of the plurality of heating elements may be such that far fields of magnetic fields having opposite polarities induced by respective coils of the heating elements overlap.
    Type: Application
    Filed: October 4, 2021
    Publication date: February 3, 2022
    Inventors: Lichung Ha, Jay Noble, David Guan, Armando T. Martins
  • Ovens for atomic clocks and related methods
    Patent number: 11166342
    Abstract: Ovens for atomic clocks may include a body including a cavity within the body. A plurality of heating elements may be distributed around the body, each heating element of the plurality including coils of electrically resistive material. An arrangement of the plurality of heating elements may be such that far fields of magnetic fields having opposite polarities induced by respective coils of the heating elements overlap.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: November 2, 2021
    Assignee: Microchip Technology Incorporated
    Inventors: Lichung Ha, Jay Noble, David Guan, Armando T. Martins
  • Method for determining at least one faulty piece of equipment of an aircraft, and corresponding system
    Patent number: 10683101
    Abstract: A method is provided for determining at least one faulty piece of equipment from amongst a plurality of pieces of equipment of an aircraft. A system is also provided that implements the method. The method comprises the steps of reading a plurality of predetermined parameters for monitoring said equipment; defining a list of symptoms associated with said parameters read, using a predetermined correspondence table; attributing a value associated with each symptom according to the parameters read, which value is selected from amongst a predetermined list of values; evaluating for each piece of equipment an occurrence of one or more fault modes for said piece of equipment on the basis of at least one predetermined truth table which associates a fault mode with each combination of symptom values; and determining at least one faulty piece of equipment from amongst one or more pieces of equipment, of which at least one fault mode is currently occurring, referred to as potentially faulty equipment.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 16, 2020
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Pierre Louis-Marie Emmanuel Guibert, David Guan
  • METHOD FOR DETERMINING AT LEAST ONE FAULTY PIECE OF EQUIPMENT OF AN AIRCRAFT, AND CORRESPONDING SYSTEM
    Publication number: 20160096633
    Abstract: A method is provided for determining at least one faulty piece of equipment from amongst a plurality of pieces of equipment of an aircraft. A system is also provided that implements the method. The method comprises the steps of reading a plurality of predetermined parameters for monitoring said equipment; defining a list of symptoms associated with said parameters read, using a predetermined correspondence table; attributing a value associated with each symptom according to the parameters read, which value is selected from amongst a predetermined list of values; evaluating for each piece of equipment an occurrence of one or more fault modes for said piece of equipment on the basis of at least one predetermined truth table which associates a fault mode with each combination of symptom values; and determining at least one faulty piece of equipment from amongst one or more pieces of equipment, of which at least one fault mode is currently occurring, referred to as potentially faulty equipment.
    Type: Application
    Filed: September 30, 2015
    Publication date: April 7, 2016
    Applicant: SNECMA
    Inventors: Pierre Louis-Marie Emmanuel Guibert, David Guan