Patents by Inventor Bernhard Empl

Bernhard Empl 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 and reagent compositions for determining alpha amylase using a blocked and labeled substrate
    Patent number: 4818692
    Abstract: The present invention provides compounds of the general formula: ##STR1## in which R and R.sub.1, independently of one another, each represent a straight-chained or branched alkyl or alkoyl radical containing up to 6 carbon atoms or a phenyl radical or R and R.sub.1 together also form a methylene bridge, the hydrogen atoms of which, independently of one another, can each be substituted by an alkyl radical containing up to 5 carbon atoms or a phenyl radical, R.sub.2 represents an oligoglucoside residue containing 2 to 7 glucose units and X is a hydrogen atom or an optically-determinable residue.The present invention also provides a process for the preparation of these compounds.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: April 4, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Elli Rauscher, Eugen Schaich, Ulrich Neumann, August Wahlefeld, Wolfgang Gruber, Bernhard Empl
  • Heptaose compounds and preparation thereof
    Patent number: 4709020
    Abstract: The present invention provides compounds of the general formula: ##STR1## in which R and R.sub.1, independently of one another, each represent a straight-chained or branched alkyl or alkoyl radical containing up to 6 carbon atoms or a phenyl radical or R and R.sub.1 together also form a methylene bridge, the hydrogen atoms of which, independently of one another, can each be substituted by an alkyl radical containing up to 5 carbon atoms or a phenyl radical, R.sub.2 represents an oligoglucoside residue containing 2 to 7 glucose units and X is a hydrogen atom or an optically-determinable residue.The present invention also provides a process for the preparation of these compounds.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: November 24, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventors: Elli Rauscher, Eugen Schaich, Ulrich Neumann, August Wahlefeld, Wolfgang Gruber, Bernhard Empl