Patents by Inventor John C. Steinberg

John C. Steinberg 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).

  • Water-soluble derivatives of sodium mannoheptonate
    Patent number: 3931147
    Abstract: Water-soluble metal complexes of sodium mannoheptonate in which the metal is an aluminum, iron or chromium trivalent ion. The water-soluble complexes are produced by reacting a water slurry of sodium mannoheptonate with a salt of the trivalent metal. The reaction products are useful for inhibiting the swelling and dispersion of clays and, in the case of the iron complex, as anti-chlorotic agents for the treatment of trees and plants.
    Type: Grant
    Filed: September 10, 1973
    Date of Patent: January 6, 1976
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Kenneth R. Gray, John C. Steinberg