Patents by Inventor John P. Devlin

John P. Devlin 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).

  • Substituted phenylalkylpiperazinylpropyl (ureas or thioureas) useful for treatment of immunological, inflammatory and allergic disorder
    Patent number: 4579947
    Abstract: Compounds of the formula ##STR1## having activity as antihistamine or inhibitors of mediator release from basophils or mast cells.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: April 1, 1986
    Assignee: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: John P. Devlin, Karl D. Hargrave, Edward L. Barsumian, Genus J. Possanza
  • 2-Carboxy-4-oxo-4H,6H-(2)-benzopyrano-(3,4-f)-(1)-benzopyrans and esters and salts thereof
    Patent number: 3987186
    Abstract: Compounds of the formula ##SPC1##Wherein theR.sub.1 ' s are hydrogen, alkyl of 1 to 3 carbon atoms or together a double-bonded oxygen,R.sub.2 is hydrogen, fluorine, chlorine, methyl, hydroxyl, methoxy, hydroxy-ethoxy, nitro or --SO.sub.3 H,R.sub.3 is hydrogen, fluorine, chlorine or methoxy,R.sub.4 is hydrogen, methyl or methoxy,R.sub.5 is hydrogen, fluorine, chlorine or methyl, andR.sub.6 is hydrogen or alkyl of 1 to 8 carbon atoms, and, when R.sub.6 is hydrogen, salts thereof formed with an inorganic or organic base; the compounds as well as the salts are useful as antiallergics.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: October 19, 1976
    Assignee: Boehringer Ingelheim GmbH
    Inventors: John P. Devlin, Patrick Brian Stewart, Kurt Freter