Patents by Inventor Angelika Thurna

Angelika Thurna 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).

  • Highly pure amidoximes
    Patent number: 5278309
    Abstract: A pure crystalline O-(2-hydroxy-3-piperidino-1-propyl) nicotinic acid amidoxime base of the Formula (Ib) ##STR1## is disclosed characterized by a melting point of 70.degree. to 73.degree. C., giving, when dissolved in an amount of 1 to 10 ml of concentrated sulfuric acid, a yellow homogeneous solution, and showing the following spectral characteristics:IR spectrum (kBr): .gamma. --O--C.dbd.N 1642 cm.sup.-1.sup.1 H-NMR spectrum (CDCL.sub.3, .delta. ppm): 1.48 m, (6H), CH.sub.2 -piperidine; 2.42 m, (6H), 3.times.CH.sub.2 --N; 3.36, br, (1H), CH--O; 4.08 m, (3H), 1--CH.sub.2, OH; 5.2, br, (2H), NH.sub.2 ; 7.30 m (1H), pyridine-5'; 7.92 m, 4', 8.62 m (1H), 6', 8.88 m, (1H), 2'.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: January 11, 1994
    Assignee: Chinoin Gyogyszar es Vegyeszeti Termekek Gyara RT.
    Inventors: Bela Bertok, Istvan Szekely, Angelika Thurna, Lajos Nagy, Eva Somfai, Sandor Botar, Antal Gajary, Kalman Takacs
  • Highly pure amidoximes
    Patent number: 5239077
    Abstract: The inventions is a purer form of O-(2-hydroxy-3-piperidino-1-propyl)nicotinic acid amidoxime hydrochloride.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: August 24, 1993
    Assignee: Chinoin Gyogyszar es Vegyeszeti Termekek Gyara Rt.
    Inventors: Bela Bertok, Istvan Szekely, Angelika Thurna, Lajos Nagy, Eva Somfai, Sandor Bota, Antal Gajary, Kalman Takacs