Patents by Inventor James Daniel Ratajczyk

James Daniel Ratajczyk 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).

  • 1,3-Dimethyl- 1H-pyrazolo(4,3-D) pyrimidine-7 (6H)-ones
    Patent number: 3939161
    Abstract: Novel 1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidine-7(6H)-ones. The compounds exhibit central nervous system activity, particularly anti-convulsant and sedative activity, and also exhibit anti-inflammatory activity and gastric antisecretory activity.
    Type: Grant
    Filed: October 29, 1973
    Date of Patent: February 17, 1976
    Assignee: Abbott Laboratories
    Inventors: James Daniel Ratajczyk, Robert George Stein, Leo Ralph Swett