Patents by Inventor Bernd-Michael Holle

Bernd-Michael Holle 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 thermal treatment of titanium dioxide in a circulating fluidized bed and the use thereof
    Patent number: 5744108
    Abstract: The present invention relates to a process for the production of titanium dioxide pigments and the use thereof.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: April 28, 1998
    Assignee: Bayer AG
    Inventors: Bernd-Michael Holle, Eckhard Bayer, Jorg Krekel
  • Process for the calcination of filter cakes with high solids contents being partly pre-dried in a directly heated rotary kiln
    Patent number: 5174817
    Abstract: A process for calcining a filter cake in a directly heated rotary kiln wherein part of the filter cake is separated from the entire mass of filter cake, the separated portion is predried and recombined with the remainder portion and the combined predried and remainder portion is calcined. The filter cake can be inorganic solids such as oxides of titanium, chromium (III), zinc and iron.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: December 29, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd-Michael Holle, Peter Beumer, Rolf M. Braun, Hilmar Rieck, Jurgen Kischkewitz, Gerhard Wiederhoft
  • Process for micronizing solid matter in jet mills
    Patent number: 4917309
    Abstract: A process for micronizing solid matters in a jet mill, wherein the solid matters are brought into the jet mill across an injector and wherein the micronization takes place, if necessary, in the presence of milling aids and/or dispersing agents, wherein the solid matters are forcibly supplied to the injector and an apparatus for carrying out the process, the apparatus comprising a dosing means, a forcible entry means, and injector and a jet mill.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: April 17, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Gunter Zander, Horst Bornefeld, Bernd-Michael Holle
  • Process and device for micronizing solid matter in jet mills
    Patent number: 4880169
    Abstract: A process for micronizing solid matters in a jet mill, wherein the solid matters are brought into the jet mill across an injector and wherein the micronization takes place, if necessary, in the presence of milling aids and/or dispersing agents, wherein the solid matters are forcibly supplied to the injector and an apparatus for carrying out the process, the apparatus comprising a dosing means, a forcible entry means, and injector and a jet mill.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: November 14, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Gunter Zander, Horst Bornefeld, Bernd-Michael Holle