Patents by Inventor Lothar Schulz

Lothar Schulz 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).

  • Patent number: 7074850
    Abstract: The invention relates to polyurethane block copolymers of general formula (I) to (IV), in which the variables are defined as follows: A represents a polyurethane block, which contains at least one hydrophilic group, B is a hydrophobic polyurethane block, X1, X2 are hydrophilic end groups and n is a whole number from 1 to 20. The invention also relates to the production of cross-linkable dispersion additives from the inventive polyurethane block copolymers and to the use of said cross-linkable dispersion additives for colorant preparations, in particular inks for ink-jet printing.
    Type: Grant
    Filed: September 14, 2002
    Date of Patent: July 11, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrike Hees, Sophia Ebert, Ruediger Sens, Friedrich-Wilhelm Raulfs, Hans-Guenter Bohrmann, Lothar Schulz, Heinz Heissler, Johann Mueller, Karl Siemensmeyer, Guenter Renz
  • Publication number: 20060119679
    Abstract: Disclosed are recording fluids, preferably inks for the ink jet process, containing random polyurethane copolymers and one or more melamine derivatives as crosslinkers.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 8, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Christian Kruger, Ulrike Hees, Richard Gelder, Peter Fuber, Lothar Schulz, Hans-Gumer Bohrmann, Dieter Puttner, Sophia Ebert
  • Publication number: 20040249088
    Abstract: The invention relates to polyurethane block copolymers of general formula (I) to (IV), in which the variables are defined as follows: A represents a polyurethane block, which contains at least one hydrophilic group, B is a hydrophobic polyurethane block, X1, X2 are hydrophilic end groups and n is a whole number from 1 to 20. The invention also relates to the production of cross-linkable dispersion additives from the inventive polyurethane block copolymers and to the use of said cross-linkable dispersion additives for colorant preparations, in particular inks for ink-jet printing.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 9, 2004
    Inventors: Ulrike Hees, Sophia Ebert, Rudiger Sens, Friedrich-Wilhelm Raulfs, Hans-Gunter Bohrmann, Lothar Schulz, Heinz Heissler, Johann Muller, Karl Siemensmeyer, Gunter Renz
  • Publication number: 20040030047
    Abstract: The invention relates to a polyurethane comprising at least one anionic active group L. The anionic active group L is bound to a segment G in the polyurethane, said segment containing monomers that have been linked by radical polymerisation. The invention also relates to a binding agent composition containing an inventive polyurethane, to a method for the production thereof and to the use of polyurethanes of this type for producing magnetic recording media.
    Type: Application
    Filed: June 19, 2003
    Publication date: February 12, 2004
    Inventors: Ulrike Hees, Hans-Guenter Bohrmann, Benedikt Raether, Ria Kress, Albert Kohl, Lothar Schulz
  • Patent number: 5613361
    Abstract: A hydraulic circuit for supplying a plurality of series-operated consumers of a hydraulically controlled installation, in particular of an injection molding machine, having a pump with feed-flow pressure control, is described. To be able to slow down greater moving masses with very little expenditure in regard to circuitry and devices, only a portion of the consumers, such as the extruder, the injection unit and possibly the ejector are operated in open circulation, while at least one selected further consumer, such as the clamping unit of the injection molding machine, where a greater mass must be moved in alternating directions, is moved in semi-closed or closed circulation.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: March 25, 1997
    Assignee: Mannesmann Rexroth GmbH
    Inventors: Jorg Dantlgraber, Lothar Schulz, Reiner Puschel
  • Patent number: 4338473
    Abstract: Nitrosation agent(s), contained as by-products in nitrated aromatic compounds after nitration with nitric acid or nitration acid, are removed by a water treatment, wherein the water is distilled off at least partially in vapor form, advantageously under reduced pressure. In the further reaction of the nitrocompounds treated in this manner undesired nitrosamines are practically not formed. The process is especially suitable for the manufacture of 4-di-n-propylamino-3,5-dinitrobenzotrifluoride (Trifluralin), a valuable herbicide, substantially free from nitrosamine(s).
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: July 6, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Kurt Habig, Konrad Baessler, Lothar Schulz, Heinz Schutte
  • Patent number: 4107263
    Abstract: A process for the preparation of bromine and hydrogen bromide, which comprises reacting ammonium bromide with an oxygen containing gas at temperatures of from 200.degree. to 800.degree. C in the presence of oxidation catalysts is disclosed. Catalysts based on platinum group metals favor formation of HBr. Most other metal catalysts cause chiefly formation of bromine.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: August 15, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Schulz, Hans-Jurgen Arpe
  • Patent number: 4105753
    Abstract: A process for the preparation of bromine and hydrogen bromide, which comprises reacting ammonium bromide with an oxygen containing gas at temperatures of from 200.degree. to 800.degree. C. in the presence of oxidation catalysts is disclosed. Catalysts based on platinum group metals favor formation of HBr. Most other metal catalysts cause chiefly formation of bromine.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: August 8, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Schulz, Hans-Jurgen Arpe