Patents by Inventor Judit Fleischer

Judit Fleischer 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).

  • Process for the preparation of 3,4-dihydroisoquinoline
    Patent number: 4861888
    Abstract: The invention relates to a process for the preparation of 3,4-dihydroisoquinoline by dehydrogenation of the 1,2,3,4-tetrahydroisoquinoline with elemental sulphur.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: August 29, 1989
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Kalman Takacs, Ilona K. Ajzert, Katalin M. Kellner, Judit Fleischer, Mariann E. Puskas, Jozsef Rimai