Patents by Inventor Adam Demeter

Adam Demeter 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).

  • Crystalline form of antiprogestin CDB-4124
    Patent number: 8513228
    Abstract: The present invention relates to novel crystalline Form A of 17?-acetoxy-21-methoxy-11?-[4-N,N-dimethylaminophenyl]-19-norpregna-4,9-diene-3,20-dione, (also known as CDB-4124) and methods for the preparation of it in excellent purity.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: August 20, 2013
    Assignee: Richter Gedeon Nyrt.
    Inventors: Csaba Santa, Adam Demeter, Balazs Havasi, Sandor Maho
  • NOVEL CRYSTALLINE FORM OF ANTIPROGESTIN CDB-4124
    Publication number: 20120077791
    Abstract: The present invention relates to novel crystalline Form A of 17?-acetoxy-21-methoxy-11?-[4-N,N-dimethylaminophenyl]-19-norpregna-4,9-diene-3,20-dione, (also known as CDB-4124) and methods for the preparation of it in excellent purity.
    Type: Application
    Filed: March 22, 2010
    Publication date: March 29, 2012
    Inventors: Csaba Santa, Adam Demeter, Balazs Havasi, Sandor Maho
  • Process for the preparation of cabergoline
    Patent number: 7858791
    Abstract: A process for preparing cabergoline (I) from ergoline-8?-carboxylic acid ester (XIII) comprising the following steps. (XIII), (XVI), (XVII), (XVIII), (XIX), (I). The present case also relates to the intermediates (XVI), (XVII), (XVIII) and (XIX) as well as the polymorphic amorphous form of Cabergoline (I) and the production thereof.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: December 28, 2010
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Janos Galambos, Laszlo Czibula, Ferenc Sebök, Sandorné Balint, Ferencné Kassai, Gyorgyi Ignaczné Szendrei, Adam Demeter
  • Industrial process for the synthesis of 2-substituted 1-(hydroxy-ethylidene)-1,1-bisphosfi- conic acids of high purity and the salts thereof
    Patent number: 7612229
    Abstract: Process for the synthesis of high purity 2-substituted-1-(hydroxy-ethylidene)-1,1-bisphosphonic acid of formula (I), the salts and hydrates thereof—wherein the meaning of R is 3?-pyridyl or 2?-amino-ethylidene group—from compounds of formula (II)—wherein the meaning of R is as described above—or salts and hydrates thereof with phosphorous acid in the presence of methanesulfonic acid using phosphorus pentoxide as reagent and in given case the obtained acid is converted into a salt with base.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: November 3, 2009
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Jozsef Neu, Janos Fischer, Tamas Fodor, Jozsef Törley, Tibor Gizur, Sandor Levai, Adam Demeter, Eva Perenyi
  • Process for the Preparation of Cabergoline
    Publication number: 20070293677
    Abstract: A process for preparing cabergoline (I) from ergoline-8?-carboxylic acid ester (XIII) comprising the following steps. (XIII), (XVI), (XVII), (XVIII), (XIX), (I). The present case also relates to the intermediates (XVI), (XVII), (XVIII) and (XIX) as well as the polymorphic amorphous form of Cabergoline (I) and the production thereof.
    Type: Application
    Filed: March 2, 2005
    Publication date: December 20, 2007
    Inventors: Janos Galambos, Laszio Czibula, Ferenc Sebok, Sandorne Balint, Ferencne Kassai, Gyorgyi Ignaczne Szendrei, Adam Demeter
  • Process for the synthesis of N-(4-cyano-3-trifluoromethylphenyl)-3-(4-fluorophenylsulfonyl)-2-hydroxy-2-methylpropionamide
    Patent number: 7199257
    Abstract: A new process is disclosed for the synthesis of racemic or optically pure N-[4-cyano-3-trifluoro-methyl-phenyl]-3[4-fluorophenyl-sulfonyl]-2-hydroxy-2-methylpropionamide. The process includes the formation of several novel intermediates in the synthesis.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: April 3, 2007
    Assignee: Richter Gedeon Vegyeszeti Gyar RT.
    Inventors: Bela Sörös, Zoltan Tuba, György Galik, Adam Bor, Adam Demeter, Ferenc Trischler, Janos Horvath, Janos Brlik
  • Industrial process for the synthesis of 2-substituted 1-(hydroxy-ethylidene)-1,1-bisphosfi- conic acids of high purity and the salts thereof
    Publication number: 20060122395
    Abstract: Process for the synthesis of high purity 2-substituted-1-(hydroxy-ethylidene)-1,1-bisphosphonic acid of formula (I), the salts and hydrates thereof—wherein the meaning of R is 3?-pyridyl or 2?-amino-ethylidene group—from compounds of formula (II)—wherein the meaning of R is as described above—or salts and hydrates thereof with phosphorous acid in the presence of methanesulfonic acid using phosphorus pentoxide as reagent and in given case the obtained acid is converted into a salt with base.
    Type: Application
    Filed: January 27, 2004
    Publication date: June 8, 2006
    Inventors: Jozsef Neu, Janos Fischer, Tamas Fodor, Jozsef Torley, Tibor Gizur, Sandor Levai, Adam Demeter, Eva Perenyi