Patents by Inventor Jürgen Stohrer

Jürgen Stohrer 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).

  • Multicomponent system for modifying, degrading or bleaching lignin or lignin-containing materials, and processes for its use
    Patent number: 6242245
    Abstract: A multicomponent system for modifying, degrading or bleaching lignin and lignin-containing materials or similar substances, includes an oxidoreductase and an oxidant suitable for the oxidoreductase and a mediator and at least one enzymatically active additive. The mediator does not inactivate the oxidoreductase and the enzymatically active additive, and the enzymatically active additive is selected from the group consisting of the hydrolases of the enzyme class 3.2.1.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: June 5, 2001
    Assignee: Consortium für elektrochemische Industrie GmbH
    Inventors: Manfred Amann, Michael Wohlschlager, Johannes Freudenreich, Jürgen Stohrer, Elke Fritz-Langhals
  • Process for the preparation of N-aryl-N-hydroxamides
    Patent number: 6232492
    Abstract: The invention relates to a method for preparing n-aryl-n-hydroxamides, whereby arylhydroxamines are reacted with ketones to n-aryl-n-hydroxamides, without using acyloxindoles-generating solvents.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: May 15, 2001
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventor: Juergen Stohrer
  • Method for producing organic hydroxylamines
    Patent number: 6211410
    Abstract: According to the inventive method for producing organic hydroxylamines, at least one organic nitro compound is partially hydrogenated in the presence of an organic base or ammonia, a trivalent phosphor compound and a hydrogenation catalyst. The invention is characterised in that quantities of the nitrogen base of more than 10 wt. % in relation to the organic nitro compound are used.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: April 3, 2001
    Assignee: Consortium für elektrochemische Industrie GmbH
    Inventors: Johannes Freudenreich, Jürgen Stohrer
  • Process for the preparation of liquid-crystalline polyorganosiloxanes containing (meth)acryloxy groups
    Patent number: 5641850
    Abstract: Liquid-crystalline polyorganosiloxanes containing methacryloxy and/or acryloxy groups are prepared by reaction of polyorganosiloxanes containing hydrogen atoms bonded directly to silicon atoms with alkenes and/or alkynes containing mesogenic groups in two steps, wherein the polyorganosiloxanes mentioned are reacted in a first step with alkene and/or alkyne containing mesogenic groups and are reacted in a second step with an alkene and/or alkyne containing at least one methacryloxy and/or acryloxy group and mesogenic groups.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: June 24, 1997
    Assignee: Consortium fur electrochemische Industrie GmbH
    Inventors: Juergen Stohrer, Franz-Heinrich Kreuzer, Hans-Joachim Luckas
  • Polymerizable liquid-crystalline siloxanes
    Patent number: 5605649
    Abstract: Polymerizable liquid-crystalline siloxanes of a defined composition which are distinguished by low viscosity and pronounced thermochromic properties. The liquid-crystalline siloxanes of the present invention are used for the production of membranes in the optical display of electromagnetic field, opto-electronics, information storage and in particular in the production of optical filters and reflectors.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: February 25, 1997
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Juergen Stohrer, Willibald Lottner