Patents by Inventor Racai Sezi

Racai Sezi 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).

  • Dicarboxylic acid derivatives
    Patent number: 5750711
    Abstract: The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF.sub.2).sub.m, C(CF.sub.3).sub.2 or CF.sub.2 --CF(CF.sub.3) (m=1 to 10), and R stems from the following compounds: fluoro- or trifluoromethyl- and nitro- or cyanophenols, thiophenols or -aminobenzenes, 4-hydroxy-, 4-mercapto- or 4-aminocoumarins, N-hydroxysuccinimides or N-hydroxymaleimides, 2-hydroxy- or 2-mercaptobenzoxazoles or -benzothiazoles and 1-hydroxy- or 1-mercaptobenzotriazoles.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: May 12, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Racai Sezi, Hellmut Ahne, Eberhard Kuehn