Patents by Inventor Allan Shih-Ping Chang

Allan Shih-Ping Chang 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).

  • AUTONOMOUS FIBER OPTIC SYSTEM FOR DIRECT DETECTION OF CO2 LEAKAGE IN CARBON STORAGE WELLS
    Publication number: 20230069606
    Abstract: Direct detection of carbon dioxide leakage in a carbon storage well is obtained using an optical fiber adapted to be positioned in the carbon storage well, a detection unit operatively connected to the optical fiber, and a leak sensor section incorporated in the optical fiber.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 2, 2023
    Inventors: Tiziana C. Bond, Allan Shih-Ping Chang
  • Methods for isolation and viability assessment of biological organisms
    Patent number: 8947657
    Abstract: Isolation of biological or chemical organisms can be accomplished using a surface enhanced Raman scattering (SERS) system. The SERS system can be a single or a stacked plurality of photonic crystal membranes with noble-metal lined through pores for flowing analyte potentially containing the biological or chemical organisms. The through pores can be adapted to trap individual biological or chemical organisms and emit SERS spectra, which can then be detected by a detector and further analyzed for viability of the biological or chemical organism.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: February 3, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Sonia Edith Letant, Sarah Elyse Baker, Tiziana Bond, Allan Shih-Ping Chang
  • METHODS FOR ISOLATION AND VIABILITY ASSESSMENT OF BIOLOGICAL ORGANISMS
    Publication number: 20120078523
    Abstract: Isolation of biological or chemical organisms can be accomplished using a surface enhanced Raman scattering (SERS) system. The SERS system can be a single or a stacked plurality of photonic crystal membranes with noble-metal lined through pores for flowing analyte potentially containing the biological or chemical organisms. The through pores can be adapted to trap individual biological or chemical organisms and emit SERS spectra, which can then be detected by a detector and further analyzed for viability of the biological or chemical organism.
    Type: Application
    Filed: May 26, 2011
    Publication date: March 29, 2012
    Inventors: Sonia Edith Létant, Sarah Elyse Baker, Tiziana Bond, Allan Shih-Ping Chang