Patents by Inventor Philip D. Josephy

Philip D. Josephy 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: 5104894
    Abstract: Synthetic novel ellagic acid congeners of the formula: ##STR1## wherein: R.sub.1 is --H, --OH or --OR';R.sub.2 is --H, --OH or --OR';R.sub.3 is --H, --OH or --OR';R.sub.4 is --H, --OH or --OR';R.sub.5 is --H, --OH or --OR';R.sub.6 is --H, --OH or --OR';R' is lower alkyl having 1 to 8 carbon atoms or --CH.sub.2 --Ar;Ar is phenyl or substituted phenyl, and at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is other than --H. The above compounds and 6H-dibenzo[b,d]pyran-6-one are useful for inhibiting mutagenic activity in living cells.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: April 14, 1992
    Assignee: University of Guelph
    Inventors: Philip D. Josephy, Victor A. Snieckus