Patents by Inventor Branislav Bohmer

Branislav Bohmer 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 production of low molecular weight acrylonitrile polymers and their use
    Patent number: 5393845
    Abstract: The invention relates to a process for the continuous production of polyacrylonitrile hydrolyzates and to their use as dispersion and grinding aids for pigments and fillers, such as for example kaolin, CaCO.sub.3 or gypsum.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: February 28, 1995
    Assignee: Wolff Walsrode AG
    Inventors: Siegfried Korte, Heinrich Alberts, Branislav Bohmer, Werner Karstens, Wolfgang Koch, Hans-Gunter Poersch-Panke, Klaus Szablikowski
  • Substances for the manufacture of paper
    Patent number: 4988790
    Abstract: Substances suitable for use as retention agents contain a cationic polyacrylamide with recurrent dialkylaminoalkylacrylamide units and a polyamidamine or a polyamine.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: January 29, 1991
    Assignee: Wolff Walsrode AG
    Inventors: Rudolf Behn, Branislav Bohmer, Lutz Hoppe, Klaus Szablikowski
  • Water-soluble polymers and their use as flushing liquid additives for drilling
    Patent number: 4749498
    Abstract: Water-soluble polymers consisting of from 40 to 80 mole percent of residues corresponding to the following formula (I) ##STR1## in which X.sup..sym. is a cation or H.sup..sym., from 10 to 30 mole percent of residues corresponding to the following formula (II) ##STR2## from 0 to 30 mole percent of residues corresponding to the following formula (III) ##STR3## and from 0 to 10 mole percent of residues corresponding to the following formula (IV) ##STR4## residues I to IV being statistically distributed in the polymer and the sum of the mole % of I-IV always having to amount to 100.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: June 7, 1988
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Werner Lange, Branislav Bohmer
  • Water-soluble, polymer-modified hydroxyalkyl methyl cellulose and its use as an additive for asbestos-free tile adhesive formulations
    Patent number: 4588772
    Abstract: Water-soluble substances of high molecular weight obtained by reacting hydroxyalkyl methyl celluloses with copolymers of 2-acrylamido-2-methyl-3-propane sulfonic acid/acrylamide/ethylacrylate and a bifunctional crosslinking component in an alkaline medium.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: May 13, 1986
    Assignee: Wolff Walsrode AG
    Inventors: Branislav Bohmer, Werner Lange, Frank Hohl
  • Auxiliary for improving retention, dewatering and working up, particularly in the manufacture of paper
    Patent number: 4267059
    Abstract: An auxiliary for improving the retention of flushable solids, for accelerating the dewatering of suspensions and for more rapidly working up industrial waters, effluents and sludges by the addition of a basic water-soluble polymer being produced by reacting (a) an aliphatic polyethylene glycol ether amine and (b) a basic polyamino amide to form an intermediate product and (c) reacting said intermediate with an epihalohydrin, dihaloalkane, glyoxal-bis-acrylamide, bis-acrylamidoacetic acid, acrylamidoglycolic acid or tetraalkyloxyethane.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: May 12, 1981
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Rudolf Behn, Lutz Hoppe, Branislav Bohmer
  • Auxiliary agent for improving retention, drainage and treatment especially in papermaking, and use of the auxiliary agent
    Patent number: 4103080
    Abstract: Auxiliary agents for improving the retention of flushable solids and for accelerating the drainage of suspensions, for more rapid treatment of solid and liquid substances which can be utilized industrially, such as industrial water, effluents and sludges, inter alia in the paper industry, and for improving the structure of soils, this auxiliary agents being in the form of suitable high-molecular, water-soluble acrylamide polymers obtained by solution polymerization, and also relates to a process for the preparation of this auxiliary agents.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: July 25, 1978
    Assignee: Wolff Walsrode Aktiengesellschaft
    Inventors: Branislav Bohmer, Lutz Hoppe