Patents by Inventor Ferenc Sperber

Ferenc Sperber 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 preparation of 4-methyl-5-(2-chloroethyl)-thiazole and analogues thereof
    Patent number: 5648498
    Abstract: A process is described for the preparation of 4-Methyl-5-(2-Chloroalkyl)-thiazole wherein the alkyl ranges from C.sub.2 -C.sub.5, by providing the steps of either a) converting the 3-thiocyanato-5-chloro-2-alkanone into 2-chloro-4-methyl-5-(2-chloroalkyl)-thiazole by gaseous hydrochloric acid in an organic solvent and hydrogenating the compound in the presence of a metal catalyst in an organic solvent, or b) reacting 3-thiocyanato-5-choro-2-alkanone with aqueous mineral acid and treating the thiazole obtained with a halogenating agent, and hydrogenating the 2-chloro-4-methyl-5-(2-chloroalkyl)-thiazole in an organic solvent in presence of a metal catalyst.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: July 15, 1997
    Assignee: Astra Aktiebolag
    Inventors: Endre Palosi, Dezso Korbonits, Erzsebet Molnar nee Bako, Ida Szvoboda nee Kanzel, Gergely Heja, Pal Kiss, Csaba Gonczi, Ferenc Sperber, Csaba Huszar, Gyorgy Mihalovics, Attila Nemeth, Mihaly Sut, Karol Gyure, Istvan Bone, Ferenc Morasz, Laszlo Ledniczky, Erzsebet Szabo nee Kardos, Peter Gyri, Erzsebet Szalay, Karoly Ban, Ildiko Buttkai, Arpad Kvari, Sandor Garaczy
  • Process for the preparation of 4-methyl-5-(2-chloroethyl)-thiazole and analogues thereof
    Patent number: 5534644
    Abstract: The present invention relates to a process for the preparation of compounds of general formula (I), wherein R stands for a straight chained C.sub.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 9, 1996
    Assignee: Aktiebolaget Astra
    Inventors: Endre Palosi, Dezso Korbonits, Erzsebet Molnar nee Bako, Ida Szvoboda nee Kanzel, Gergely Heja, Pal Kiss, Csaba Gonczi, Ferenc Sperber, Csaba Huszar, Gyorgy Mihalovics, Attila Nemeth, Mihaly Su, Karol Gyure, Istvan Bone, Ferenc Morasz, Laszlo Ledniczky, Erzsebet Szabo nee Kardos, Peter Gy ri, Erzsebet Szalay, Karoly Ban, Iidiko Buttkai, Arpad K vari, Sandor Garaczy
  • Chemical process for the preparation of pharmaceutically active compounds
    Patent number: 5023337
    Abstract: The present invention is directed to the preparation of benzimidazole derivatives of the formula (I), ##STR1## wherein A=stands for S, SO or SO.sub.2,R.sup.1 =stands for C.sub.1-4 alkyl group,R.sup.2 =stands for C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl or C.sub.6-10 aryl or aralkyl,comprising reacting a sulphochloride of the formula (II) ##STR2## with an alkyl aluminum compound of the formula (III).R.sub.n.sup.2 AlClhd (3-n) (III)The reaction is performed in one step.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: June 11, 1991
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Ferenc Sperber, Csaba Huszar, Attila Nemeth, Eva Somfai, Iren Pali nee Ivanics