Patents by Inventor Le Nga Quach

Le Nga Quach 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).

  • Method and device for determining chemical and/or physical properties of working substances in a machine system
    Patent number: 9128025
    Abstract: Methods and devices are disclosed for determining chemical and/or physical properties of working substances in a machine system, particularly in a floating device. In at least one embodiment, the working substance is irradiated with light, wherein the working substance has at least one temperature from a defined temperature range during irradiation; and the light penetrating the working substance or reflected by the working substance is spectrally analyzed.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: September 8, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Remigiusz Pastusiak, Le Nga Quach, Kerstin Wiesner, Rainer Hartig
  • METHOD AND DEVICE FOR DETERMINING CHEMICAL AND/OR PHYSICAL PROPERTIES OF WORKING SUBSTANCES IN A MACHINE SYSTEM
    Publication number: 20120140226
    Abstract: Methods and devices are disclosed for determining chemical and/or physical properties of working substances in a machine system, particularly in a floating device. In at least one embodiment, the working substance is irradiated with light, wherein the working substance has at least one temperature from a defined temperature range during irradiation; and the light penetrating the working substance or reflected by the working substance is spectrally analyzed.
    Type: Application
    Filed: August 10, 2010
    Publication date: June 7, 2012
    Inventors: Remigiusz Pastusiak, Le Nga Quach, Kerstin Wiesner, Rainer Hartig