Patents by Inventor Andrew Shultz

Andrew Shultz 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).

  • QUANTUM DOTS/GRAPHENE HETEROSTRUCTURES FOR HIGH-PERFORMANCE UNCOOLED INFRARED DETECTION
    Publication number: 20240298521
    Abstract: Provided are methods of fabricating photodetectors based on heterostructures comprising graphene and mercury chalcogenide, e.g., HgTe, quantum dots. Embodiments of the methods are able to provide photodetectors that can detect MWIR light, e.g., greater than 3 mm at room temperature with responsivities R* of at least 104 A/W and detectivities D* of at least 1011 Jones. Thus, the present photodetectors outperform existing MWIR photodetectors without the need for cooling. The photodetectors themselves are also encompassed.
    Type: Application
    Filed: February 28, 2024
    Publication date: September 5, 2024
    Inventors: Judy Z. Wu, Maogang Gong, Bo Liu, Andrew Shultz
  • Cleaner for ovens and the like using sodium alpha olefin sulfonate, sodium hydroxide, and sodium silicate
    Patent number: 4451393
    Abstract: A mixture in water of sodium alpha olefin sulfonate, sodium hydroxide and sodium silicate displays surprisingly high viscosity characteristics and is useful as an oven cleaner or metal cleaner.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: May 29, 1984
    Assignee: Stepan Chemical Company
    Inventors: Henry Watanabe, Andrew Shultz
  • Particulate composition of sodium alpha olefin sulfonate and sodium silicate
    Patent number: 4111853
    Abstract: A surfactant composition adapted for use as an intermediate for particulate synthetic detergent formulations. The composition comprises sodium alpha olefin sulfonate and sodium silicate. Such compositions are in a homogeneous, storage stable, free-flowing, particulate form, and characteristically are only slightly hygroscopic.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: September 5, 1978
    Assignee: Stepan Chemical Company
    Inventors: Andrew Shultz, F. Quinn Stepan
  • Finely divided colorants
    Patent number: 3934973
    Abstract: Finely divided colorant compositions capable of uniform distribution throughout a dry, solid particulate material, such as a cleaning composition, are prepared by forming a solution of the desired colorant, adding a finely divided, inert substrate material and spray drying the resultant slurry.
    Type: Grant
    Filed: September 20, 1971
    Date of Patent: January 27, 1976
    Assignee: Allied Chemical Corporation
    Inventors: Andrew Shultz, Leslie C. Wizemann