Patents by Inventor Tamás SCHÄFER

Tamás SCHÄFER 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 production of 21-methoxy-11-beta-phenyl-19-nor-pregna-4,9-diene-3,20-dione derivatives
    Patent number: 9683010
    Abstract: The present invention relates to a process for the synthesis of compounds of formula (I), wherein the meaning of R is dimethylamino or acetyl group, using the compound of formula (III) or (IV), wherein the meaning of R? is dimethylamino or 2-methyl-1,3-dioxan-2-yl group, as starting material and methoxymethyl lithium as reagent.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: June 20, 2017
    Assignee: Richter Gedeon Nyrt.
    Inventors: Sándor Mahó, Csaba Sánta, János Csörgei, Gábor Szabó, Tamás Schäfer, Zoltán Béni
  • PROCESS FOR THE PRODUCTION OF 21-METHOXY-11-BETA-PHENYL-19-NOR-PREGNA-4,9-DIENE-3,20-DIONE DERIVATIVES
    Publication number: 20160326211
    Abstract: The present invention relates to a process for the synthesis of compounds of formula (I), wherein the meaning of R is dimethylamino or acetyl group, using the compound of formula (III) or (IV), wherein the meaning of R? is dimethylamino or 2-methyl-1,3-dioxan-2-yl group, as starting material and methoxymethyl lithium as reagent.
    Type: Application
    Filed: February 16, 2015
    Publication date: November 10, 2016
    Inventors: Sándor MAHÓ, Csaba SÁNTA, János CSÖRGEI, Gábor SZABÓ, Tamás SCHÄFER, Zoltán BÉNI