Patents by Inventor Helmut Meffert

Helmut Meffert 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).

  • Publication number: 20030114057
    Abstract: The present invention relates to particulate, linear, sheet-like, or three-dimensional structures which comprise, at least on their surface, a hydrophilicizing amount of at least one polymer which has urethane groups and/or urea groups, and also ammonium groups. The ammonium groups are obtained by quaternizing or neutralizing tertiary amino groups, preferably with carbonic acid.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 19, 2003
    Inventors: Valerie Andre, Werner Bertleff, Karl Hberle, J?uuml;rgen Huff, Ralf Nrenberg, Wolfgang Schrepp, Helmut Meffert, Kati Schmidt
  • Publication number: 20030113285
    Abstract: A polyurethane which contains, as incorporated units,
    Type: Application
    Filed: October 29, 2002
    Publication date: June 19, 2003
    Inventors: Helmut Meffert, Son Nguyen Kim
  • Patent number: 6552142
    Abstract: A description is given of a process for preparing aqueous copolymer dispersions by free-radical polymerization of ethylenically unsaturated monomers in an aqueous solution in which (a) from 10 to 90% by weight of at least one hydrophilic monomer A which has an N-vinyl group and whose polymerisation rate possesses a maximum at pH levels above 7, and (b) from 10 to 90% by weight of at least-one monoethylenically unsaturated hydrophobic monomer B whose polymerisation rate possesses a maximum at pH levels below 7, are copolymerised in the presence of a free-radical initiator system such that in the course of the polymerization the pH falls by from 2 to 5 units. The copolymer dispersions prepared in this way and the copolymers obtainable therefrom are suitable as auxiliaries for pharmaceutical, cosmetic or agrochemical formulations and for preparing paints, coating compositions, sizes, and adhesives.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 22, 2003
    Assignee: BASF Akeiengesellschaft
    Inventors: Helmut Meffert, Maximilian Angel
  • Patent number: 6528089
    Abstract: Solid dosage forms are obtained by mixing at least one polymeric binder, at least one active ingredient, and, where appropriate, conventional additives to form a plastic mixture, and shaping, using as polymeric binder a copolymer of an N-vinyllactam and a copolymerizable monomer having a hydrophobic radical. Dosage forms which show slow release of the active ingredient are obtained in a simple and low-cost manner.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: March 4, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Kothrade, Helmut Meffert, Gunther Berndl, Andreas Ernst, Axel Sanner
  • Patent number: 6525156
    Abstract: Insoluble, only slightly swellable popcorn polymers containing a) from 50 to 99% by weight of styrene and/or at least one monounsaturated styrene derivative, b) from 0.1 to 40% by weight of at least one N-vinyllactam or N-vinylamine and c) from 0.1 to 10% by weight of at least one difunctional crosslinking component, the stated percentages by weight of the individual components a) to c) summing to 100%.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: February 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Ernst, Helmut Meffert, Axel Sanner, Stefan Stein, Folker Ruchatz
  • Publication number: 20030032574
    Abstract: The invention relates to the use of crosslinked polyvinylpyrrolidone in a specific particle composition as a disintegrant in compact particulate laundry detergents and cleaning products, to the particle composition and the compact particulate laundry detergents themselves, to a process for preparing the compact particulate laundry detergents and cleaning products, and to a process for preparing the specific particle composition.
    Type: Application
    Filed: September 9, 2002
    Publication date: February 13, 2003
    Inventors: Helmut Meffert, Werner Bertleff, Michael Kerber, Peter Spang, Richard Baur, Marcos Gomez
  • Publication number: 20030013800
    Abstract: Compositions comprising at least one water-insoluble ingredient and at least one copolymer of
    Type: Application
    Filed: May 20, 2002
    Publication date: January 16, 2003
    Inventors: Stephan Kothrade, Anton Negele, Helmut Meffert, Axel Sanner
  • Patent number: 6497867
    Abstract: The invention relates to the use of copolymers comprising a) 82 to 99.9 mol % of at least one monoethylenically unsaturated C3-C8-carboxylic acid; b) 0.1 to 18 mol % of at least one monomer selected from the group b1) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b2) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b3) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; c) 0 to 17.9 mol % of at least one monomer selected from the group of c1) vinyl esters of aliphatic C8-C30-carboxylic acids, c2) C8-C30-alkylvinyl ethers, the mol % data for the individual components adding up to 100%, as solubilizer.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: December 24, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Meffert, Axel Sanner, Gunther Berndl, Folker Ruchatz, Karl Kolter, Kurt Heinz Bauer
  • Patent number: 6489422
    Abstract: Use of neutralized or partially neutralized copolymers obtainable from A) from 50 to 99% by weight of monoethylenically unsaturated carboxylic acid and B) from 1 to 50% by weight of at least one comonomer chosen from the groups a) to d) or also mixtures of different monomers from groups a) to d) a) monoethylenically unsaturated carboxylic acid esters with a saturated C8- to C30-alcohol b) N-alkyl- or N,N-dialkyl-substituted carboxamides, the alkyl radicals independently of one another being aliphatic or cycloaliphatic alkyl radicals having at least 8 to 18 carbon atoms, c) vinyl esters of aliphatic C8- to C30-carboxylic acids, d) C8- to C18-alkyl vinyl ethers, for the preparation of hair cleansers.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: December 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Meffert, Kristin Tiefensee
  • Publication number: 20020153331
    Abstract: The use is described of particulate, water-insoluble and scarcely swellable polymers of ethylenically unsaturated monomers, which polymers contain, copolymerized, at least 20% by weight, based on the total weight of the monomers, of at least one &agr;,&bgr;-monoethylenically unsaturated monocarboxylic acid having from 3 to 6 carbons as filter aid for filtering aqueous liquids. Subject-matter of the invention are also water-insoluble, scarcely swellable polymers (popcorn polymers) that contain, copolymerized, &agr;,&bgr;-monoethylenically unsaturated carboxylic acids and styrene or styrene derivatives, and also a process for their preparation.
    Type: Application
    Filed: February 19, 2002
    Publication date: October 24, 2002
    Inventors: Marcos Gomez, Tilman C. Rock, Helmut Meffert, Axel Sanner
  • Publication number: 20020132886
    Abstract: Use of neutralized or partially neutralized copolymers obtainable from
    Type: Application
    Filed: March 14, 2002
    Publication date: September 19, 2002
    Inventors: Helmut Meffert, Kristin Tiefensee
  • Patent number: 6436440
    Abstract: The use of copolymers comprising a) 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcaprolactam, N-vinylimidazole and methylated N-vinylimidazole or N-vinylformamide and b) 1 to 50% by weight of at least one monomer selected from the group of b1) C14-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; b2) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids; b3) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids; b4) vinyl esters of aliphatic C8-C30-carboxylic acids; b5) C8-C30-alkyl vinyl ethers as matrix for producing solid pharmaceutical and cosmetic presentations.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 20, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Meffert, Folker Ruchatz
  • Patent number: 6399679
    Abstract: Use of neutralized or partially neutralized copolymers obtainable from A) from 50 to 99% by weight of monoethylenically unsaturated carboxylic acid and B) from 1 to 50% by weight of at least one comonomer chosen from the groups a) to d) or also mixtures of different monomers from groups a) to d) a) monoethylenically unsaturated carboxylic acid esters with a saturated C8- to C30-alcohol b) N-alkyl- or N,N-dialkyl-substituted carboxamides, the alkyl radicals independently of one another being aliphatic or cycloaliphatic alkyl radicals having at least 8 to 18 carbon atoms, c) vinyl esters of aliphatic C8- to C30-carboxylic acids, d) C8- to C18-alkyl vinyl ethers, for the preparation of hair cleansers.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: June 4, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Meffert, Kristin Tiefensee
  • Publication number: 20020037318
    Abstract: The invention relates to the use of copolymers comprising
    Type: Application
    Filed: September 18, 2001
    Publication date: March 28, 2002
    Inventors: Helmut Meffert, Axel Sanner, Gunther Berndl, Folker Ruchatz, Karl Kolter, Kurt Heinz Bauer
  • Patent number: 6331294
    Abstract: The invention relates to the use of copolymers comprising a) 82 to 99.9 mol % of at least one monoethylenically unsaturated C3-C8-carboxylic acid; b) 0.1 to 18 mol % of at least one monomer selected from the group b1) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b2) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b3) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; c) 0 to 17.9 mol % of at least one monomer selected from the group of c1) vinyl esters of aliphatic C8-C30-carboxylic acids, c2) C8-C30-alkylvinyl ethers, mol % data for the individual components adding up to 100%, as solubilizer.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: December 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Meffert, Axel Sanner, Gunther Berndl, Folker Ruchatz, Karl Kolter, Kurt Heinz Bauer
  • Patent number: 6284803
    Abstract: The present invention relates to a solid dosage form comprising at least one polymeric binder and at least one active ingredient and, where appropriate, conventional additives, wherein the polymeric binder consists of copolymerized units a) 15-83% by weight of at least one N-vinyllactam, b) 15-83% by weight of methyl methacrylate, c) 2-70% by weight of at least one other monomer and d) 0-9.9% by weight of at least one &agr;,&bgr;-ethylenically unsaturated acid.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: September 4, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Kothrade, Gunther Berndl, Helmut Meffert
  • Patent number: 6271307
    Abstract: The use of graft copolymers obtainable by grafting a) polyalkylene oxides with b) at least one monomer selected from the group of b1) C1-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; b2) vinyl esters of aliphatic C1-C30-carboxylic acids; b3) C1-C30-alkyl vinyl ethers; b4) N—C1-C12-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids; b5) N,N—C1-C12-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids as solubilizer.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 7, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Jürgen Huff, Helmut Meffert, Folker Ruchatz
  • Patent number: 6075107
    Abstract: The use of copolymers ofA) 60-99 mol % of N-vinylpyrrolidone, andB) 1-40 mol % of a monomer selected from the group ofb1) C.sub.8 -C.sub.30 -alkyl esters of monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acids,b2) N-alkyl- or N,N-dialkyl-substituted amides of acrylic acid or of methacrylic acid with C.sub.8 -C.sub.18 -alkyl radicals, orb3) vinyl esters of aliphatic C.sub.8 -C.sub.30 -carboxylic acids, or mixtures of these monomers,as surface-active substances in preparations of water-insoluble substances.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: June 13, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Kothrade, Helmut Meffert, Gunther Berndl, Axel Sanner, Stefan Stein, Volker Schehlmann, Folker Ruchatz