Patents by Inventor Teresa Yip

Teresa Yip 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).

  • Stable composition for the determination of peroxidatively active substances
    Patent number: 4755472
    Abstract: A stable test device for the determination of a peroxidatively active substance comprising a carrier containing 1,4-diisopropylbenzene dihydroperoxide and a benzidine indicator in a molar ratio of from 0.9 to 3.0. The composition can be incorporated in a carrier matrix along with a ferric chelate to provide ascorbate resistance thereto, which is important in a urine test for occult blood. The test device is stable under storage and heat stress and can be used to prepare a multitest strip containing a glucose test based on a peroxidase/potassium iodide indicator system.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: July 5, 1988
    Assignee: Miles Inc.
    Inventors: Ibrahim A. Ismail, Teresa Yip