Patents by Inventor Johannes Freudenreich

Johannes Freudenreich 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 preparation of aldehydes and ketones
    Patent number: 6297403
    Abstract: A process for the preparation of vinyl, alkynyl, aryl or heteroaryl aldehydes or vinyl, alkynyl, aryl or heteraoryl ketones includes reacting vinyl-, alkynyl-, aryl- and heteroarylmethyl and -methylene compounds with the aid of a mediator and an oxidant, wherein the mediator is selected from the group of the aliphatic, heterocyclic or aromatic NO, or NOH containing compounds.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: October 2, 2001
    Assignee: Consortium für elektrochemische Industrie GmbH
    Inventors: Elke Fritz-Langhals, Johannes Freudenreich
  • Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and processes for its use
    Publication number: 20010018956
    Abstract: Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances, includes
    Type: Application
    Filed: January 9, 2001
    Publication date: September 6, 2001
    Applicant: CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE GmbH
    Inventors: Jurgen Stohrer, Hans-Peter Call, Johannes Freudenreich, Manfred Amann, Robert Muller
  • Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances
    Patent number: 6258209
    Abstract: Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances, includes (a) if appropriate at least one oxidation catalyst; (b) at least one suitable oxidizing agent; and (c) at least one mediator, wherein the mediator is chosen from the group consisting of N-aryl-N-hydroxyamides.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: July 10, 2001
    Assignee: Consortium für elektrochemische Industrie GmbH
    Inventors: Jürgen Stohrer, Hans-Peter Call, Johannes Freudenreich, Manfred Amann, Robert Müller
  • 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
  • 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 heteroaryl aldehydes and heteroaryl ketones
    Patent number: 6169213
    Abstract: Process for the preparation of heteroaryl aldehydes or heteroaryl ketones by reaction with heteroarylmethanols with the aid of a mediator and an oxidant, wherein the mediator is selected from the group of the aliphatic, cycloaliphatic, heterocyclic or aromatic NO, and NOH containing compounds.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: January 2, 2001
    Assignee: Consortium f{umlaut over (u)}r elektrochemische Industrie GmbH
    Inventors: Elke Fritz-Langhals, Johannes Freudenreich, Norbert Hampp, Anton Candussio
  • Process for the preparation of aldehydes and ketones
    Patent number: 6069282
    Abstract: A process for the preparation of vinyl, alkynyl or aryl aldehydes or vinyl, alkynyl or aryl ketones by reaction of vinyl-, alkynyl- or aryl- methanols with the aid of a mediator and an oxidant, wherein the mediator is selected from the group of the aliphatic, cycloaliphatic, heterocyclic or aromatic NO or NOH containing compounds.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: May 30, 2000
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Elke Fritz-Langhals, Johannes Freudenreich, Norbert Hampp, Anton Candussio
  • Process for the preparation of aldehydes and ketones
    Patent number: 6023000
    Abstract: A process for the preparation of vinyl, alkynyl or aryl aldehydes or vinyl, alkynyl or aryl ketones includes reacting vinyl-, alkynyl- and aryl- and -methylene compounds with the aid of a mediator and an oxidant, wherein the mediator is selected from the group of the aliphatic, heterocyclic or aromatic NO or NOH containing compounds.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: February 8, 2000
    Assignee: Consortium fur elektrochemisch Industrie GmbH
    Inventors: Elke Fritz-Langhals, Johannes Freudenreich