Patents by Inventor Kalman Medzihradsz

Kalman Medzihradsz 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).

  • Hexitols containing free carboxy groups and a process for the preparation thereof
    Patent number: 4419522
    Abstract: The invention relates to new hexitols having the general formula (I) and (II), ##STR1## wherein the hexitol skeleton is dulcitol, mannitol or iditol,X represents halogen, preferably bromine,R is a saturated or unsaturated C.sub.4-10 alkylcarbonyl group which also contains a free carboxy group, andR.sup.1 is hydrogen, a saturated or unsaturated C.sub.4-10 alkylcarbonyl group which also contains a free carboxy group, a saturated or unsaturated C.sub.2-10 alkylcarbonyl group, a saturated or unsaturated C.sub.4-10 alkylcarbonyl group which also contains an alkoxycarbonyl group, or a saturated or unsaturated C.sub.8-10 aralkylcarbonyl group,and salts of these compounds. The new compounds according to the invention have tumor-inhibiting affects.The above compounds are prepared according to the invention so that(a) a compound of the general formula (IX), whereinthe hexitol skeleton is dulcitol, mannitol or iditol,Q is a saturated or unsaturated C.sub.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: December 6, 1983
    Assignee: Chinoin Gyogyszer Vegyeszeti Termekek Gyara Rt.
    Inventors: Ilona Elekes, Laszlo Institoris, Kalman Medzihradsz, Laszlo tvos, Hedvig Medzihradszky-Schweiger, Katalin De Gleria, Janos Sugar, Somfai Relle, Sandor Eckhardt, Ivan Hidy, Sandor Kerpel-Fronius