Patents by Inventor Christian Weh

Christian Weh 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).

  • Method of preparing valproinic acid compounds
    Patent number: 6753349
    Abstract: The invention relates to a method for producing compounds which contain at least one molecule valproic acid salt and at least one molecule valproic acid. The valproic acid salt represents alkali or alkaline earth salt. Valproic acid is directly converted with the calculated amount of the corresponding alkali carbonate or earth alkaline carbonate and/or the calculated amount of the corresponding alkali bicarbonate or earth alkaline bicarbonate without adding a solvent and at a temperature that is higher than the melting temperature of valproic acid.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: June 22, 2004
    Assignee: Cilag AG
    Inventor: Christian Weh
  • Process for preparing [S-(R*,S*)]-&bgr;-[[[1-[1-oxo-3(4-piperidinyl)propyl]-3-piperidinyl]carbonyl]amino]-3-pyridinepropanoic acid and derivatives
    Patent number: 6515130
    Abstract: A process for preparing a compound of formula I wherein R1 and R2 are independently selected from the group consisting of hydrogen, lower alkyl and halogen
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: February 4, 2003
    Inventors: Judith H. Cohen, Michael Justus, Cynthia A. Maryanoff, Armin Rössler, Fridtjof Schröder, Kirk L. Sorgi, Frank J. Villani, Jr., Christian Weh
  • Process for preparing [S- (R*, S*) ] -beta- [ [ [1- [1-oxo-3- (4-piperidinyl) propyl] -3-piperidinyl] carbonyl]amino] -3-pyridinepropanoic acid and derivatives
    Publication number: 20020137937
    Abstract: A process for preparing a compound of formula I 1
    Type: Application
    Filed: February 22, 2002
    Publication date: September 26, 2002
    Inventors: Judith H. Cohen, Michael Justus, Cynthia A. Maryanoff, Armin Rossler, Fridtjof Harmen Schroder, Kirk L. Sorgi, Frank J. Villani, Christian Weh