Patents by Inventor Edward Gu

Edward Gu 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).

  • Publication number: 20150247888
    Abstract: The invention provides a method and apparatus for electronically testing the safety of sources of energy such as electrical circuits, in explosive atmospheres such as high risk mining situations, using an electronic spark tester (EST) in place of the known mechanical spark test apparatus (STA). The EST typically uses an analogue subsystem (5) and a digital subsystem (6) connected by a digital to analogue converter (7) and an analogue to digital connector (8) to apply a simulated spark load to the energy source and measure the time varying current response to that load.
    Type: Application
    Filed: July 19, 2012
    Publication date: September 3, 2015
    Applicant: CMTE Development Limited
    Inventors: Rajiv Chandra Shekhar, Edward Gus Prochon, Barend Jacobus Pienaar, Paul John Lever
  • Patent number: 9083180
    Abstract: A combination AC receptacle and low voltage class 2 power units are provided in a standard single strap flush wall-mount outlet so that portable battery operated electronic devices may be charged without having to use a special AC charger. Ground fault circuit interrupter (GFCI) and/or arc fault circuit interrupter (AFCI) capabilities are also provided so that this combination AC receptacle and low voltage class 2 power units, e.g., USB receptacles, may used in occupancy locations requiring such protections under current electrical building codes. A standard wall cover plate is used to finish off installation of this flush wall-mount outlet into a wall outlet box. Also a data interface may be provided to allow a PDA or PC to control smart wiring systems through the USB receptacle.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 14, 2015
    Assignee: Cooper Technologies Company
    Inventors: Rohit Sumerchand Dodal, Carlos Eduardo Restrepo, Alex Zhuang, Edward Gu
  • Publication number: 20120292991
    Abstract: A combination AC receptacle and low voltage class 2 power units are provided in a standard single strap flush wall-mount outlet so that portable battery operated electronic devices may be charged without having to use a special AC charger. Ground fault circuit interrupter (GFCI) and/or arc fault circuit interrupter (AFCI) capabilities are also provided so that this combination AC receptacle and low voltage class 2 power units, e.g., USB receptacles, may used in occupancy locations requiring such protections under current electrical building codes. A standard wall cover plate is used to finish off installation of this flush wall-mount outlet into a wall outlet box. Also a data interface may be provided to allow a PDA or PC to control smart wiring systems through the USB receptacle.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 22, 2012
    Applicant: Cooper Technologies Company
    Inventors: Rohit Sumerchand Dodal, Carlos Eduardo Restrepo, Alex Zhuang, Edward Gu
  • Patent number: 5891985
    Abstract: A soluble mono-alkyl Stannoic Acid/glycol liquid phase catalyst produced from the reaction of a mono-alkyl Stannoic Acid and a glycol at a temperature of from at least 180.degree. C., and its use in preparing high molecular weight polyester polymers.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Edward Gus Brugel
  • Patent number: 5663281
    Abstract: An improved process for preparing high molecular weight polyester polymers, such as poly(butylene terephthalate), an alkylene glycol and a di- or tricarboxylic acid by first preparing a pre-polymer in the form of uniform solid particles having an intrinsic viscosity of from 0.1 to about 0.3 dL/gm and a chemical composition which contains greater than a 1% stoichiometric excess of the alkylene glycol above the amount required to produce a high molecular weight polymer, and polymerizing the pre-polymer in the solid state.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: September 2, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward Gus Brugel
  • Patent number: D703139
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: April 22, 2014
    Assignee: Cooper Technologies Company
    Inventors: Rohit Sumerchand Dodal, Carlos Eduardo Restrepo, Alex Zhuang, Edward Gu
  • Patent number: D719511
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: December 16, 2014
    Assignee: Cooper Technologies Company
    Inventors: Rohit Sumerchand Dodal, Carlos Eduardo Restrepo, Alex Zhuang, Edward Gu