Patents by Inventor Tobin J. Marks

Tobin J. Marks 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: 4563300
    Abstract: Methods and formable compositions for fabricating electrically conductive articles comprising ionically bonding cofacially stacking organomacrocycles and as cofacially stacking phthalocyanines, in which a composition comprising a cofacially stacking phthalocyanine in strong Bronsted acid is formed into a desired shape such as a fiber or film, solidified by removal of the solvent, and provided in fractional valence state.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: January 7, 1986
    Assignee: Northwestern University
    Inventors: Kenneth J. Wynne, Tobin J. Marks, Tamotsu Inabe
  • Patent number: 4563301
    Abstract: Methods and formable compositions for fabricating electrically conductive articles comprising cofacially stacking organomacrocycles and as cofacially stacking phthalocyanines, in which a composition comprising a cofacially stacking phthalocyanine in strong Bronsted acid is formed into a desired shape such as a fiber or film, solidified by removal of the solvent, and provided in fractional valence state.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: January 7, 1986
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Tamotsu Inabe
  • Patent number: 4364870
    Abstract: The invention relates to an improved method for synthesizing uranium hexamethoxide and new mixed methoxy uranium (VI) fluorides from uranium hexafluorides. Irradiation of the products of the invention in the vapor phase, with a pulsed CO.sub.2 gas laser leads to enrichment in the U-235 content of the isotopic mixture containing U-235 and U-238, the degree of enrichment depending upon the laser frequency employed.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: December 21, 1982
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Edward A. Cuellar, Steven S. Miller, Eric Weitz
  • Patent number: 4097384
    Abstract: Separation of U.sup.235 and U.sup.238 isotopes by converting a mixture of these isotopes to organic compounds or to silicon compounds and then irradiating the isotope compounds selectively to change their chemical (and/or physical) properties, thereby to facilitate separation. In a preferred embodiment of the invention the uranium compounds are selected from the group having a chemical moiety R bonded directly to the U atom, the U-R bond having a fundamental, overtone, or combination virbational absorption frequency between 900 and 1100 cm.sup.-1. The selected U mixture is then irradiated with a frequency-selective CO.sub.2 laser.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: June 27, 1978
    Assignees: Northwestern University, Plasma Physics Corporation
    Inventors: John H. Coleman, Tobin J. Marks