Patents by Inventor Nathan L. Shipkowitz

Nathan L. Shipkowitz 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).

  • Antiviral pyrazolopyrazines
    Patent number: 4303658
    Abstract: Certain 1-substituted-3-loweralkyl-5-(substituted)phenyl-6-aminopyrazolo[3,4-b]pyr azines are provided. They have useful activity as antivirals.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: December 1, 1981
    Assignee: Abbott Laboratories
    Inventors: Gerard Y. Paris, Mina D. Perlin, Andre G. Pernet, Nathan L. Shipkowitz
  • Inhibitors of reverse transcriptase enzymes
    Patent number: 3979511
    Abstract: A method of inhibiting the activity of reverse transcriptase in Rous sarcoma viruses and other viruses containing reverse transcriptase. The method comprises subjecting the reverse transcriptase to an enzyme inhibiting effective dosage of a compound of the formula: ##SPC1##Wherein R' is hydrogen or hydroxyl and R is C.sub.1 -C.sub.8 alkyl, cyclohexyl, phenyl, benzyl, and substituted benzyl.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: September 7, 1976
    Assignee: Abbott Laboratories
    Inventors: Paul P. Hung, Nathan L. Shipkowitz, Anne Mary Von Esch