Patents by Inventor Lothar Westermann

Lothar Westermann 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: 6539954
    Abstract: The invention relates to a liquid to paste machine dishwashing detergent which, in addition to customary machine dishwashing detergent ingredients, comprises a crystalline, layered silicate of the formula aA2O.bBO.cC2O3.dD2O5.eSiO2.fH2O, in which A is an alkali metal and/or hydrogen, B is an alkaline earth metal, C is an element from the third main group of the Periodic Table, and D is an element from the fifth main group of the Periodic Table, and the following also apply: 0≦a≦1; 0≦b≦0.5; 0≦c/e≦0.05; 0≦d/e≦0.25; 1.9≦e≦4; 0≦f≦20. The invention also relates to a process for the preparation of this machine dishwashing detergent and to its use.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: April 1, 2003
    Assignee: Clariant GmbH
    Inventors: Günther Schimmel, Lothar Westermann, Harald Bauer
  • Patent number: 6462006
    Abstract: A solid-form dishwasher detergent that contains a builder combination of conventional phosphates and crystalline layer silicates. Despite its phosphate content, the detergent provides improved protection to sensitive tableware, more particularly glasses and decorated tableware, and improved cleaning performance.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 8, 2002
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Clariant GmbH
    Inventors: Rainer Sorg, Christian Nitsch, Juergen Haerer, Harald Volk, Thomas Mueller-Kirschbaum, Peter Krings, Harald Bauer, Josef Holz, Guenther Schimmel, Lothar Westermann
  • Patent number: 5066415
    Abstract: A dishwashing agent consists of a crystalline, largely water-insoluble sodium layer silicate having a molar ratio of SiO.sub.2 /Na.sub.2 O of (1.9 to 3.5):1 in combination with a proton donor, a 0.5% strength by weight aqueous solution of the dishwashing agent having a pH of less than 10. The dishwashing agent can furthermore contain a surfactant, an active chlorine or active oxygen carrier, a dispersing agent, an alkali metal phosphate or an alkali metal polyphosphate and a filler.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: November 19, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz-Josef Dany, Hannsjorg Ulrich, Lothar Westermann
  • Patent number: 4959170
    Abstract: A rinsing composition free from phosphate contains as a builder a crystalline layer sodium silicate of the general formula NaMSi.sub.x O.sub.2x+1.y H.sub.2 O, in which M is sodium or hydrogen, x is a number of 1.9-4 and y is a number of 0-20, in admixture with a co-builder which is a polymeric and/or copolymeric carboxylic acid or a salt of said acid.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: September 25, 1990
    Assignee: Hoechst AG
    Inventors: Hannsjorg Ulrich, Lothar Westermann
  • Patent number: 4915865
    Abstract: Dimensionally stable alkaline cleansing agents of low density consist at least of 2 to 50% by weight of alkali metal phosphates, 2 to 50% by weight of silicates and 1 to 60% by weight of alkali metal hydroxides and/or alkali metal carbonates or bicarbonates and additionally contain 0.25 to 10% by weight of phosphoric acid partial esters.These cleansing agents are prepared by first foaming phosphoric acid partial esters with water in a weight ratio of (1:2) to (1:80), using intensive stirring. When the remaining components have been incorporated into the foam, using stirring or kneading, the resulting mixture is converted to moldings. The moldings are allowed to set for 0.5 to 15 hours.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: April 10, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Westermann, Hannsjorg Ulrich, Werner Klose
  • Patent number: 4502892
    Abstract: The invention relates to a composition suitable for use in cleaning panes of glass, consisting of a pelleted blend of surfactants, the composition containing:(a) a water-soluble alkali metal polyphosphate of high molecular weight with a P.sub.2 O.sub.5 -content of 60 to 70 weight %;(b) at least one alkali metal carbonate or hydrogen-carbonate;(c) at least one crystalline substance producing an acid reaction in aqueous solution;(d) at least one anion-active and/or non-ionic surfactant; and(e) at least one filler, if desired or convenient.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: March 5, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Westermann, Horst-Dieter Wasel-Nielen, G/u/ nter Sorbe
  • Patent number: 4242217
    Abstract: The invention provides a composition suitable for use in cleaning panes of glass consisting of a substantially homogeneous surfactant and binder containing blend, in the form of a hardened moulding, the blend containing:(a) at least one water-soluble alkali metal phosphate;(b) at least one anion-active and/or non-ionic surfactant;(c) at least one alkali metal silicate, with or without water admixed therewith;(d) at least one orthophosphoric acid mono- and/or dialkylester having 1 to 4 carbon atoms in its alkyl groups, or a specified type of product obtained by reacting phosphorus-V-oxide with a monohydric alcohol and an alkane polyol; with or without(e) a complex former and/or a solvent.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: December 30, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Westermann, Horst-Dieter Wasel-Nielen