Patents by Inventor Marshal Kulka

Marshal Kulka 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).

  • 3-(2-Haloalkyl)-1,4-oxathiins and 2-(2-haloalkyl)-1,4-dithiins, and treatment of leukemia and tumors therewith
    Patent number: 4822813
    Abstract: Novel 3-(2-haloalkyl)-1,4-oxathiins or 2-(2-haloalkyl)-1,4-dithiins, useful for regressing or inhibiting the growth of leukemia and tumors in mammals. The compounds have the formula.: ##STR1## wherein R.sub.1 is an alkyl group containing up to 4 carbon atoms, cyclohexyl or phenyl;R.sub.2 is hydrogen or ethyl;R.sub.3 and R.sub.4 are each hydrogen, methyl or ethyl, andwhen either R.sub.3 and R.sub.4 is methyl or ethyl, the other is hydrogen;X is halogen; andY is oxygen or sulfur andwhen Y is sulfur, R.sub.3 and R.sub.4 are both hydrogen.and pharmaceutical compositions comprising said compounds in admixture with a pharmaceutically acceptable substantially non-toxic carrier.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: April 18, 1989
    Assignee: Uniroyal Chemical Ltd./Uniroyal Chemical Ltee
    Inventors: Walter G. Brouwer, Ethel E. Felauer, Marshal Kulka