Patents by Inventor Amihai Eisenstadt

Amihai Eisenstadt 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).

  • Isolated valacyclovir impurity, process for the preparation of valacyclovir impurity and use as a reference standard
    Patent number: 7629461
    Abstract: The present invention provides an isolated N-formyl valacyclovir, its preparation and its use as a reference marker and/or reference standard.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 8, 2009
    Assignee: Teva Pharmaceutical Industries Ltd
    Inventors: Amihai Eisenstadt, Michael Pesachovich
  • PREGABALIN -4-ELIMINATE, PREGABALIN 5-ELIMINATE, THEIR USE AS REFERENCE MARKER AND STANDARD, AND METHOD TO PRODUCE PREGABALIN CONTAINING LOW LEVELS THEREOF
    Publication number: 20090137842
    Abstract: The present invention provides 3-(aminomethyl)-5-methylhex-4-enoic acid (Pregabalin-4-eliminate or PRG-4E) and 3-(aminomethyl)-5-methylhex-5-enoic acid (Pregabalin-5-eliminate or PRG-5E), and their uses as reference markers and standards for determining the purity of Pregabalin. The invention also provides a method to produce Pregabalin containing low levels of these impurities.
    Type: Application
    Filed: October 3, 2008
    Publication date: May 28, 2009
    Inventors: Yuri VOLLERNER, Yanai Golub, Lilach Hedvati, Yuriy Raizi, Mirit Leibovich, Amihai Eisenstadt, Rahamin Aminov
  • Crystalline forms cinacalcet fumarate and cinacalcet succinate and processes for preparation thereof
    Publication number: 20090093652
    Abstract: The present invention provides crystalline forms of Cinacalcet Fumarate and Cinacalcet Succinate, pharmaceutical compositions comprising the crystalline form of Cinacalcet Fumarate and/or the crystalline form of Cinacalcet Succinate, and processes for preparing the crystalline forms of Cinacalcet Fumarate and Cinacalcet Succinate and pharmaceutical compositions comprising the crystalline forms.
    Type: Application
    Filed: August 18, 2008
    Publication date: April 9, 2009
    Inventors: Michal Rafilovich, Amihai Eisenstadt
  • Mycophenolate mofetil impurity
    Publication number: 20080241948
    Abstract: Provided is an impurity of mycophenolate mofetil, processes for its preparation and its use as a reference.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 2, 2008
    Inventors: Sandor Molnar, Tivadar Tamas, Janos Hajko, Beáta Kosztya, Amihai Eisenstadt
  • Mycophenolate mofetil impurity
    Patent number: 7358247
    Abstract: Provided is an impurity of mycophenolate mofetil, processes for its preparation and its use as a reference.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: April 15, 2008
    Assignee: TEVA Gyógyszergyár Zártköruen Muködö Részvénytársaság
    Inventors: Sandor Molnar, Tivadar Tamas, Janos Hajko, Beáta Kosztya, Amihai Eisenstadt
  • Process for preparing Cinacalcet hydrochloride
    Patent number: 7250533
    Abstract: Processes for preparing cinacalcet are provided.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: July 31, 2007
    Assignee: Teva Pharmaceutical Industries Ltd
    Inventors: Revital Lifshitz-Liron, Amihai Eisenstadt, Shlomit Wizel, Sharon Avhar-Maydan, Yuriy Raizi, Revital Ramaty
  • Process for preparing Cinacalcet hydrochloride
    Publication number: 20070043243
    Abstract: Processes for preparing cinacalcet are provided.
    Type: Application
    Filed: May 16, 2006
    Publication date: February 22, 2007
    Inventors: Revital Lifshitz-Liron, Amihai Eisenstadt, Shlomit Wizel, Sharon Avhar-Maydan, Yuriy Raizi, Revital Ramaty
  • Isolated valacyclovir impurity, process for the preparation of valacyclovir impurity and use as a reference standard
    Publication number: 20060084668
    Abstract: The present invention provides an isolated N-formyl valacyclovir, its preaparation and its use as a reference marker and/or reference standard.
    Type: Application
    Filed: September 6, 2005
    Publication date: April 20, 2006
    Inventors: Amihai Eisenstadt, Michael Pesachovich
  • Mycophenolate mofetil impurity
    Publication number: 20050282806
    Abstract: Provided is an impurity of mycophenolate mofetil, processes for its preparation and its use as a reference.
    Type: Application
    Filed: April 26, 2005
    Publication date: December 22, 2005
    Inventors: Sandor Molnar, Tivadar Tamas, Janos Hajko, Beata Kosztya, Amihai Eisenstadt
  • Process for the preparation of octyl methoxy cinnamate
    Patent number: 5187303
    Abstract: Octyl methoxy cinnamate of the formula ##STR1## is prepared by reacting p-bromoanisole with octyl-acrylate in an inert solvent, in the presence of a base and of a coupling catalyst.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: February 16, 1993
    Assignee: IMI (TAMI) Institute for Research and Development Ltd.
    Inventors: Amihai Eisenstadt, Yehuda Keren
  • Method for the manufacture of dimethyl, octyl - or pentyl - para-aminobenzoic acid
    Patent number: 4983754
    Abstract: A method for the manufacture of dimethyl octyl (or pentyl) para-amino benzoic acid is described. The method consists in the carbonylation of para-bromo-dimethyl aniline, in the absence of any promoter, in a reaction system having a pH of above 8 in the presence of an alcohol selected from octanol, pentanol or isomers thereof using a palladium catalyst on an inert support. The reaction is carried out at a temperature in the range of 140.degree. to 200.degree. C. and a pressure of between 1 to 5 atmospheres. The product obtained is characterized by its high purity being substantially free of any impurities.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: January 8, 1991
    Assignee: Bromine Compounds Ltd.
    Inventor: Amihai Eisenstadt