Patents by Inventor Grace Chou

Grace Chou 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).

  • UNIT-DOSE FORMAT PERHYDROLASE SYSTEMS
    Publication number: 20130284637
    Abstract: Described are compositions and methods relating to unit-dose format perhydrolase enzyme systems for use in cleaning applications, such as laundry and dishwashing.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 31, 2013
    Inventors: Grace Chou, Ayrookaran J. Poulose
  • Method and apparatus for the detection and identification of trace organic substances from a continuous flow sample system using laser photoionization-mass spectrometry
    Publication number: 20050236565
    Abstract: A method and apparatus are provided for identifying analytes at low concentrations in a liquid sample. The liquid sample is introduced through a continuous flow membrane inlet system. The analytes that permeate the membrane are analyzed by photoionization-time-of-flight mass spectrometry. The analytes remaining in the liquid sample that do not permeate the membrane are conducted to a capillary tube inlet that introduces the liquid sample and other analytes as droplets into the photoionization zone. Any analytes remaining absorbed or adsorbed on the membrane are driven through the membrane by application of heat. Analytes may be analyzed by either resonance enhanced multiphoton ionization (REMPI) or single photon ionization (SPI), both of which are provided in the apparatus and can be selected as alternative sources.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Applicant: SRI International, a California Corporation
    Inventors: Harald Oser, Michael Coggiola, Steven Young, Grace Chou