Patents by Inventor Jozsef Heizer

Jozsef Heizer 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 preparing thio, dithio or carbonyl compounds
    Patent number: 4656290
    Abstract: A process is disclosed for the preparation of compounds of the Formula IR--X--R.sup.1 (I)wherein X is thio, dithio or carbonyl and R and R.sup.1 are defined hereinbelow which comprises reducing a compound of the Formula IIR--A (II)wherein A is chlorosulfonyl or a group of the Formula ##STR1## with a sulfur compound comprising sulfur which is of the (+)4 oxidation degree and is converted into the (+)6 oxidation degree during the process or with a sulfur compound which is decomposed in acidic medium to a compound of the latter oxidation degree in the presence of a catalytic amount but not more than 0.5 mole--related to 1 mole of the starting material of the Formula II--of elemental iodine or a compound capable of delivering hydrogen iodide in acidic medium or a compound which can be reduced to hydrogen iodide in acidic medium with the sulfur compound used.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: April 7, 1987
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Istvan Kaldor, Andras Szasz, Ilona Vegh nee Ba, Jozsef Heizer, Eva Behedek nee Haraszin