Patents by Inventor John Glyn Allen

John Glyn Allen 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).

  • Isoquinoline derivatives
    Patent number: 4028363
    Abstract: 2-Amidino-4-hydroxy-1,2,3,4-tetrahydroisoquinoline, prepared from 4-hydroxy-1,2,3,4-tetrahydroisoquinoline and a compound which yields the amidino group, as well as its salts, are described.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: June 7, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Robert John Francis, John Glyn Allen