Patents by Inventor George C. Ruben

George C. Ruben 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).

  • Patent number: 4912069
    Abstract: The use of pectins or the pectin-like materials carboxymethylcellulose, alginic acid, tannins or orthodiphenolic compounds, as additives to clay to provide clay compositions of enhanced plasticity and stability is disclosed.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: March 27, 1990
    Inventor: George C. Ruben
  • Patent number: 4755494
    Abstract: The use of pectins (or pectin-like materials) as an additive to clay to provide clay compositions of enhanced plasticity and stability is disclosed.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: July 5, 1988
    Assignee: Trustees of Dartmouth College
    Inventor: George C. Ruben