Patents by Inventor Krzysztof A. Derdzinski

Krzysztof A. Derdzinski 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: 4454341
    Abstract: Compounds of the formulas: ##STR1## where X is methyl, methoxy, chlorine, or hydrogen, Y and Y.sub.1 are fluorine or hydrogen, R is hydroxy, alkoxy with 0 or 1 hydroxy substituent, aroxy, or NR.sup.1 R.sup.2 where R.sup.1 is hydrogen, alkyl with 0 or 1 hydroxy substituent or aryl and R.sup.2 is alkyl with 0 or 1 hydroxy substituent or aryl with the proviso that when Y or Y.sup.1 is fluorine, the other Y or Y.sup.1 is hydrogen. These compounds are useful as chemopreventive agents for inhibiting tumor promotion in epithelial cells and for treating nonmalignant skin disorders.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: June 12, 1984
    Assignee: SRI International
    Inventors: Marcia I. Dawson, Peter D. Hobbs, Krzysztof A. Derdzinski