Patents by Inventor Katalin Berki

Katalin Berki 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 resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid
    Patent number: 5292933
    Abstract: The invention relates to a novel process for the resolution of an acid mixture (hereinafter: threo acid mixture) containing (+)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (+)-threo acid]and (-)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (-)-threo acid].
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: March 8, 1994
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Kalman Harsanyi, Elemer Fogassy, Maria cs, Tibor Gizur, Zsuzsanna Aracs nee Tischler, Katalin Berki, Laszlo Toke, Zsuzsanna Martonffy nee Jaszay