Patents by Inventor Michael Wohlschlager

Michael Wohlschlager 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
  • Semicontinuous process for the production of pure silicon
    Patent number: 4457903
    Abstract: Pure silicon is obtained in a semicontinuous process by reducing quartz sand with aluminum in a slag medium based on alkaline earth metal silicates. The slag serves thereby simultaneously as a solvent for the aluminum oxide that forms and as an extraction medium for impurities that occur. The silicon formed separates out of the silicate slag and can be separated off. The aluminum oxide produced by the reduction can be separated from the slag and used for recovery of reusable aluminum.
    Type: Grant
    Filed: March 1, 1983
    Date of Patent: July 3, 1984
    Assignee: Heliotronic Forshungs und Entwicklungsgesellschaft fur Solarzellen Grundstoffe mbH
    Inventors: Josef Dietl, Claus Holm, Jorg Kotilge, Michael Wohlschlager
  • Process for purifying metallurgical-grade silicon
    Patent number: 4304763
    Abstract: A process is provided for purifying metallurgical-grade silicon for the manufacture of solar cells, wherein the acid treatment of the silicon, known per se, is combined with vacuum evaporation. This may be optionally combined with slag extraction and directional solidification.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 8, 1981
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Josef Dietl, Michael Wohlschlager
  • Process for the protection of carbon bodies
    Patent number: 4234630
    Abstract: A process for protecting carbon bodies against attack by molten silicon by applying a separating protective layer is provided which is characterized in that a separating layer is applied to the surface of the carbon body to be protected in such a manner as to wet it. The separating layer consists of alkaline earth metal fluorides in admixture with 0 to 90 mole % of alkaline earth metal silicates having a melting point lower than that of silicon.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: November 18, 1980
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Josef Dietl, Michael Wohlschlager