Patents by Inventor Hans Trabitzsch

Hans Trabitzsch 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: 5061518
    Abstract: Methods for providing temporary protective coatings on mechanic objects by applying thereto an aqueous emulsion of a lipophilic poly(meth)acrylate polymer predominately including esters of alcohols having at least four carbon atoms and then removing said temporary coatings when desired with an organic solvent which, with the polymer dissolved therein, is conveniently disposed of by combustion.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 29, 1991
    Assignee: Rohm GmbH
    Inventors: Klaus Langerbeins, Hans Trabitzsch, Helmut Daum
  • Patent number: 4839417
    Abstract: Water-soluble polymers or copolymers of acrylic and/or methacrylic acid which contain at least 50 base mole percent of these acids and as end groups hydrogen atoms, hydroxyl groups and moieties of a water-soluble mercaptan or moieties with a sulfoxide group formed therefrom are produced in a readily reproducible manner and free of mercaptan odor in aqueous solution by polymerization with an initiator system consisting of hydrogen peroxide, a water-soluble mercaptan and an iron salt and used as calcium-binding additives or as dispersants in aqueous systems.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: June 13, 1989
    Assignee: Rohm GmbH
    Inventors: Norbert Suetterlin, Hans-Dieter Blitz, Hans Trabitzsch
  • Patent number: 4314800
    Abstract: What is disclosed are a method for treating pelts or leather in the beamhouse, for tanning, or as an aftertreatment, which method comprises contacting said pelts or leather with an aqueous solution or dispersion of a copolymer comprising monomers of a nitrogenous ester of acrylic acid or of methacrylic acid, a further different ester of acrylic acid or of methacrylic acid, and acrylic acid or methacrylic acid, whereby portions of said copolymer are deposited in the grain layer without formation of a superficial film, and pelts and leather treated by this method.
    Type: Grant
    Filed: April 8, 1981
    Date of Patent: February 9, 1982
    Assignee: Rohm GmbH
    Inventors: Rolf Monsheimer, Ernst Pfleiderer, Werner Siol, Hanns Boessler, Hans Trabitzsch
  • Patent number: 4271058
    Abstract: What is disclosed are stable aqueous solutions, useful for example to treat water to stabilize its hardness and to render it anticorrosive or biocidal, containing a dissolved cationic component, such as polyvalent metal cation or a cationic surface active agent, and a dissolved anionic vinyl copolymer comprising both anionic monomer units having a carboxylic acid group and units of a anionic monomer having an ammonium group.
    Type: Grant
    Filed: June 12, 1979
    Date of Patent: June 2, 1981
    Assignee: Rohm GmbH
    Inventors: Hans Trabitzsch, Josef Frieser, Achim Koschik, Hermann Plainer
  • Patent number: 4105519
    Abstract: A method for polymerizing or copolymerizing water-soluble monomers, in a layer thickness between 2 and 100 mm, and at a temperature between C. and C., by irradiation with ultraviolet light in the presence of atmospheric oxygen, wherein the material to be polymerized contains at least 1 ppm of a water-soluble anthraquinone unsubstituted in the 1,4,5, and 8-positions and at least 10 ppm of dissolved chloride ions.
    Type: Grant
    Filed: October 5, 1976
    Date of Patent: August 8, 1978
    Assignee: Rohm GmbH
    Inventors: Horst Pennewiss, Hermann Plainer, Peter Quis, Hans Trabitzsch, Juergen Masanek, Juergen Jakob
  • Patent number: 3979349
    Abstract: Polymer dispersions in which an aqueous phase comprising a water-soluble polymer is dispersed in an organic liquid in the presence of a polymeric water-in-oil type dispersing agent containing salt-forming basic nitrogen atoms. When the dispersion is mixed with water in the presence of an acid, which acid may be present in the aqueous or organic phase of the dispersion or added separately, the dispersing agent transforms into an oil-in-water type, the previously dispersed polymer dissolves in the water, and the previously continuous organic phase is dispersed in the water.Methods of making such polymer dispersions.Methods of forming aqueous solutions of water-soluble polymers by combining such dispersions with water in the presence of an acid.
    Type: Grant
    Filed: May 1, 1974
    Date of Patent: September 7, 1976
    Assignee: Rohm GmbH
    Inventors: Herbert Fink, Horst Pennewiss, Hermann Plainer, Hans Trabitzsch, Josef Frieser, Juergen Masanek