Patents by Inventor John R. Dudzinski

John R. Dudzinski 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).

  • Analgesic mixture of nalbuphine and acetylsalicylic acid, derivative or salt thereof
    Patent number: 4282215
    Abstract: A composition consisting essentially of nalbuphine and acetylsalicylic acid, derivative or salt thereof, gives unexpectedly enhanced analgetic activity.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: August 4, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John R. Dudzinski, William K. Schmidt
  • Analgesic mixture of nalbuphine and acetaminophen
    Patent number: 4237140
    Abstract: A composition consisting essentially of nalbuphine and acetaminophen gives unexpectedly enhanced analgesic activity.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: December 2, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John R. Dudzinski