Patents by Inventor Chadwick A. Tolman

Chadwick A. Tolman 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).

  • Process for producing a mixture containing cyclohexanol and cyclohexanone from cyclohexane
    Patent number: 4326084
    Abstract: There is disclosed an improved process for oxidizing cyclohexane to produce a reaction mixture containing cyclohexyl hydroperoxide and decomposing the cyclohexyl hydroperoxide to form a mixture containing cyclohexanone and cyclohexanol comprising using in the oxidation step and/or the decomposition step as a catalyst a transitional metal complex of certain 1,3-bis(pyridylimino)isoindolines.
    Type: Grant
    Filed: September 16, 1980
    Date of Patent: April 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joe D. Druliner, Steven D. Ittel, Paul J. Krusic, Chadwick A. Tolman
  • Hexakis- and dihydridopentakis(phosphite ester)chromiums
    Patent number: 4155925
    Abstract: Hexakis(phosphite ester)chromiums of the formulaCr[P(OR).sub.3 ].sub.6are prepared by chromium-atom evaporation and cocondensation with a phosphite ester. Dihydridopentakis(phosphite ester)chromiums of the formulaCrH.sub.2 [P(OR).sub.3 ].sub.5are prepared by hydrogenation of the corresponding hexakis(phosphite ester)chromiums. Both the hexakis- and the dihydridopentakis(phosphite ester)chromiums are useful as hydrogenation catalysts.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: May 22, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven D. Ittel, Chadwick A. Tolman