Patents by Inventor Ulrich Grässle

Ulrich Grässle 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).

  • INTEGRATED METHOD FOR PRODUCING CARBONYL IRON POWDER AND HYDROCARBONS
    Publication number: 20110162484
    Abstract: Integrated process, in which pure carbonyl iron powder (CIP) is prepared by decomposition of pure iron pentacarbonyl (IPC) in a plant A, carbon monoxide (CO) liberated in the decomposition of the IPC is used in plant A for the preparation of further CIP from iron or is fed to an associated plant B for the preparation of synthesis gas or is fed to an associated plant C for the preparation of hydrocarbons from synthesis gas, and the CIP prepared in plant A is used as catalyst or catalyst component in an associated plant C for the preparation of hydrocarbons from synthesis gas from plant B.
    Type: Application
    Filed: September 2, 2009
    Publication date: July 7, 2011
    Inventors: Jochen Steiner, Ekkehard Schwab, Andreas Keller, Otto Watzenberger, Ulrich Grässle, Manfred Julius
  • Preparation of particularly bluish pearl luster pigments
    Patent number: 4948631
    Abstract: Particularly bluish pearl luster pigments are produced by treating titanium dioxide coated mica pigments where the optical thickness of the titanium dioxide coating is from 50 to 100 nm or from 300 to 340 nm with ammonia at from 750 to 850.degree. C. with constant agitation.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: August 14, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Ostertag, Norbert Mronga, Ulrich Graessle