Patents by Inventor Michael A. Luddy

Michael A. Luddy 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).

  • Covalently bonded high refractive index particle reagents and their use in light scattering immunoassays
    Patent number: 4401765
    Abstract: Novel particle reagent for light scattering immunoassays are provided. The particle reagents are high refractive index shell-core polymers covalently bonded to compounds of biological interest. A method of measuring unknown concentrations of these compounds of biological interest by measuring changes in turbidity caused by particle agglutination or its inhibition is also provided.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: August 30, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Alan R. Craig, William A. Frey, Charles C. Leflar, Catharine E. Looney, Michael A. Luddy