Patents by Inventor Petr Hruby

Petr Hruby 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).

  • Salts of desvenlafaxine and a method of their preparation
    Patent number: 8779005
    Abstract: The invention deals with new salts of the desvenlafaxine base of formula (I) with oxalic acid, the new salts being the hydrogen oxalate of formula (II) in the proportion of desvenlafaxine:oxalic acid of 1:1 and hemioxalate of formula (III) in the proportion of desvenlafaxine:oxalic acid of 2:1.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: July 15, 2014
    Assignee: Zentiva k.s.
    Inventors: Ludek Ridvan, Petr Hruby, Stanislav Radl, Hana Brusova, Lukas Krejcik, Tomas Pekarek, Natalia Csokova, Anna Zerzanova
  • NEW SALTS OF DESVENLAFAXINE AND A METHOD OF THEIR PREPARATION
    Publication number: 20120041227
    Abstract: The invention deals with new salts of the desvenlafaxine base of formula (I) with oxalic acid, the new salts being the hydrogen oxalate of formula (II) in the proportion of desvenlafaxine:oxalic acid of 1:1 and hemioxalate of formula (III) in the proportion of desvenlafaxine:oxalic acid of 2:1.
    Type: Application
    Filed: February 3, 2010
    Publication date: February 16, 2012
    Inventors: Ludek Ridvan, Petr Hruby, Stanislav Radl, Hana Brusova, Lukas Krejcik, Tomas Pekarek, Natalia Csokova, Anna Zerzanova
  • Method of manufacturing ()--methyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine hydrochloride (duloxetine)
    Patent number: 7709662
    Abstract: A method of preparation of (S)-N-methyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (I) or its pharmaceutically acceptable salt, in which (RS)-N,N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (III) is reacted with an optically active acid, after which a crystallization is made of that diastereoisomer which yields, by reaction with an inorganic or organic base, (S)-N,N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (S)-III, which is then demethylated using alkylchloroformates, followed by a hydrolysis and optional conversion of the compound of formula (I) to its salt.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: May 4, 2010
    Assignee: Zentiva k.s.
    Inventors: Ludek Ridvan, Petr Hruby, Lukas Placek, Miroslav Kuchar
  • METHOD OF MANUFACTURING (S)-N-METHYL-3-(1-NAPHTHYLOXY)-3-(2-THIENYL)PROPYLAMINE HYDROCHLORIDE (DULOXETINE)
    Publication number: 20090143600
    Abstract: A method of preparation of (S)—N-methyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (I) or its pharmaceutically acceptable salt, in which (RS)—N,N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (III) is reacted with an optically active acid, after which a crystallization is made of that diastereoisomer which yields, by reaction with an inorganic or organic base, (S)—N,N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine of formula (S)-III, which is then demethylated using alkylchloroformates, followed by a hydrolysis and optional conversion of the compound of formula (I) to its salt.
    Type: Application
    Filed: October 21, 2005
    Publication date: June 4, 2009
    Applicant: ZENTIVA, A.S.
    Inventors: Ludek Ridvan, Petr Hruby, Lukas Placek, Miroslav Kuchar