Patents by Inventor Jozef Bohme-Kovac

Jozef Bohme-Kovac 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).

  • Thickener combinations for building products
    Patent number: 5470383
    Abstract: The invention relates to thickener combinations for building products of nonionic cellulose ethers soluble in water or aqueous surfactant solutions and selected surfactants or naphthalenesulfonic acid condensation products.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: November 28, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Walter Schermann, Dennis Miller, Eckhard Hilgenfeldt, Jozef Bohme-Kovac
  • Building material products containing organic polymers as thickeners
    Patent number: 5432215
    Abstract: Building material products, such as, for example, jointing compounds, adhesives, emulsion paints, synthetic plasters, fillers and the like, comprising a mixture ofa) at least 10% by weight, in particular 10 to 99% by weight, of a water-soluble natural polymer and derivatives thereof,b) 1 to 89% by weight of an alkali metal salt or ammonium salt of a crosslinked polyacrylate which, if desired, is grafted with a starch, andc) 0 to 60% by weight of a water-soluble alkali metal salt or alkaline earth metal salt of arylsulfonic acid/formaldehyde condensation products or of a sulfo-modified melamine/formaldehyde polycondensation product.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: July 11, 1995
    Assignee: Hoechst AG
    Inventors: Friedrich Girg, Jozef Bohme-Kovac
  • Additive combination for improving the processing properties of water-containing mixtures of building materials
    Patent number: 5387626
    Abstract: Additive combination for improving the processing properties of water-containing mixtures of building materials.The invention relates to an additive combination for water-containing mixtures of building materials, comprisinga) at least 65% by weight, preferably 65 to 98% by weight, of a water-soluble cellulose ether or a derivative thereof,b) from 1 to 15% by weight of polyacrylamide,c) from 1 to 20% by weight of an alkali metal salt or ammonium salt of a crosslinked, ungrafted or starch-grafted polyacrylate,d) from 0 to 20% by weight of a starch ether ande) from 0 to 15% by weight of a water-soluble alkali metal salt, alkaline earth metal salt or ammonium salt of an arylsulfonic acid-formaldehyde condensation product or of a sulfonic acid-modified product of the polycondensation of melamine and formaldehyde,and to building material mixtures which contain these additive combinations.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: February 7, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jozef Bohme-Kovac, Friedrich Girg, Heinz-Josef Mann