Patents by Inventor Hans K. Dietl

Hans K. Dietl 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).

  • Preparation of quinones by salcomine-catalyzed oxidation of phenols
    Patent number: 4360469
    Abstract: It has been found that unexpectedly high yields of a high purity product can be obtained when substituted p-quinones are prepared by oxidation, using a molecular oxygen-containing gas, of the corresponding phenols in an inert solvent having a dipole moment of at least 2.7 and in the presence of a salcomine catalyst.
    Type: Grant
    Filed: June 11, 1970
    Date of Patent: November 23, 1982
    Assignee: Eastman Kodak Company
    Inventors: Hans K. Dietl, Howard S. Young