Patents by Inventor Karl D. Stein

Karl D. Stein 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).

  • Heterogeneous catalytic hydrogenation
    Patent number: 4313018
    Abstract: Anthranilic acid has been anchored to polystyrene, and rhodium, palladium, platinum and ruthenium complexes of this modified polystyrene have been prepared. These catalysts will reduce a variety of olefinic and aromatic hydrocarbons, and also nitrile, nitro and carbonyl functional groups, said carbonyl groups being present in either ketones or aldehydes.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: January 26, 1982
    Assignee: Western Kentucky University
    Inventors: Norman L. Holy, William A. Logan, Karl D. Stein
  • Heterogeneous catalytic hydrogenation
    Patent number: 4238358
    Abstract: Anthranilic acid has been anchored to polystyrene, and rhodium, palladium, platinum and ruthenium complexes of this modified polystyrene have been prepared. These catalysts will reduce a variety of olefinic and aromatic hydrocarbons, and also nitrile, nitro and carbonyl functional groups, said carbonyl groups being present in either ketones or aldehydes.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: December 9, 1980
    Assignee: Western Kentucky University
    Inventors: Norman L. Holy, William A. Logan, Karl D. Stein