Patents by Inventor Phap Hung Lien

Phap Hung Lien 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).

  • Compensated optical detection apparatus, systems, and methods
    Patent number: 8946639
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to receive radiation at an active detector of a pair of radiation detectors to provide a first signal proportional to an intensity of the radiation, to receive none of the radiation at a blind detector of the pair of radiation detectors to provide a second signal proportional to the reception of no radiation, and to combine the first signal and the second signal to provide an output signal representing the difference between the first signal and the second signal. The pair of radiation detectors may comprise thermopile detectors. Combination may occur via differential amplification. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 3, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Raj Pai, Marian Morys, Phap Hung Lien
  • COMPENSATED OPTICAL DETECTION APPARATUS, SYSTEMS, AND METHODS
    Publication number: 20140346324
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to receive radiation at an active detector of a pair of radiation detectors to provide a first signal proportional to an intensity of the radiation, to receive none of the radiation at a blind detector of the pair of radiation detectors to provide a second signal proportional to the reception of no radiation, and to combine the first signal and the second signal to provide an output signal representing the difference between the first signal and the second signal. The pair of radiation detectors may comprise thermopile detectors. Combination may occur via differential amplification. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: Raj Pai, Marian Morys, Phap Hung Lien
  • Compensated optical detection apparatus, systems, and methods
    Patent number: 8895928
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to receive radiation at an active detector of a pair of radiation detectors to provide a first signal proportional to an intensity of the radiation, to receive none of the radiation at a blind detector of the pair of radiation detectors to provide a second signal proportional to the reception of no radiation, and to combine the first signal and the second signal to provide an output signal representing the difference between the first signal and the second signal. The pair of radiation detectors may comprise thermopile detectors. Combination may occur via differential amplification. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Raj Pai, Marian Morys, Phap Hung Lien
  • COMPENSATED OPTICAL DETECTION APPARATUS, SYSTEMS, AND METHODS
    Publication number: 20120298851
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to receive radiation at an active detector of a pair of radiation detectors to provide a first signal proportional to an intensity of the radiation, to receive none of the radiation at a blind detector of the pair of radiation detectors to provide a second signal proportional to the reception of no radiation, and to combine the first signal and the second signal to provide an output signal representing the difference between the first signal and the second signal. The pair of radiation detectors may comprise thermopile detectors. Combination may occur via differential amplification. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: February 3, 2011
    Publication date: November 29, 2012
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Raj Pai, Maria Morys, Phap Hung Lien