Patents by Inventor Hans-Peter Mettler

Hans-Peter Mettler 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 asymmetric hydrogenation of beta-amino ketones
    Publication number: 20060252945
    Abstract: The process for the preparation of enantiomerically enriched or enantiomerically pure (S)- or (R)-N-monosubstituted ?-amino alcohols of formula (I) and their addition salts of proton acids, X represents S or O, and R represent C1-6-alkyl, C3-8-cycloalkyl, aryl or aralkyl.
    Type: Application
    Filed: August 31, 2004
    Publication date: November 9, 2006
    Inventor: Hans-Peter Mettler
  • Method for producing a 1-(3-cyclopentenyloxy-4-alkoxyphenyl)-4-oxocyclohexanecar-bonitrile
    Patent number: 6300512
    Abstract: This invention relates to a process for converting isovanillin to substituted 4-cyano-4-(3,4-disubstitutedphenyl)cyclhexanones. These ketones are useful in preparing certain PDE4 ingibitors wherein the 1-postion keto group is converted to a carboxylic acid group.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: October 9, 2001
    Assignee: Lonza AG
    Inventor: Hans-Peter Mettler