Patents by Inventor Howard P. Isermann

Howard P. Isermann 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).

  • Sun screen compositions of unsaturated esters of p-dimethylaminobenzoic acid
    Patent number: 4078054
    Abstract: Compositions containing esters of an unsaturated monohydric alcohol, having from 3 to 10 carbon atoms, of p-dimethylaminobenzoic acid are very effective in controlling sunburn and skin tanning. These novel esters from C.sub.3 -C.sub.10 alcohols, which have high "K" values as described, are particularly useful.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: March 7, 1978
    Assignee: Van Dyk & Company, Incorporated
    Inventors: Howard P. Isermann, Joseph P. Ciaudelli