Patents by Inventor Christopher M. Papa

Christopher M. Papa 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).

  • Zinc salt of all-trans-retinoic acid for the treatment of acne
    Patent number: 4214000
    Abstract: A zinc salt of retinoic acid has been prepared and found to have significant anti-acne activity, similar to that of retinoic acid, but with less of a tendency to cause flaking or irritation at anti-acne effective concentrations.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: July 22, 1980
    Assignee: Johnson & Johnson
    Inventor: Christopher M. Papa