Patents by Inventor Gerd-Friedrich Renner

Gerd-Friedrich Renner 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: 8088830
    Abstract: Use of silica sols containing sulfonic acid groups and/or mercapto groups as microparticles in paper production, in particular for paper retention.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: January 3, 2012
    Assignees: Kemira Oyj, Akzo Nobel Chemicals International B.V.
    Inventors: Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann, Thomas Hubbe, Lothar Puppe
  • Publication number: 20110086823
    Abstract: The invention relates to a disinfectant which comprises a special combination of biocidal phenols and, where appropriate, phenol derivatives and a keratolytic. The disinfectant is particularly suitable for controlling parasitic protozoa including their persistent forms.
    Type: Application
    Filed: December 17, 2010
    Publication date: April 14, 2011
    Applicants: BAYER ANIMAL HEALTH GMBH, LANXESS DEUTSCHLAND GMBH
    Inventors: Gisela GREIF, Robrecht FROYMAN, Claudio ORTIZ, Gerd-Friedrich RENNER, Otto EXNER, Dietmar SCHLEGEL, Rolf MATYSIAK
  • Publication number: 20110028545
    Abstract: The present invention relates to a process for producing concentrates of antimicrobial active ingredients, the concentrates themselves and their use for producing solid, liquid or pasty body cleaning compositions, such as in particular soaps.
    Type: Application
    Filed: January 12, 2009
    Publication date: February 3, 2011
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Gerd-Friedrich Renner, Otto Exner, Rolf Matysiak, Josef Wellmann, Udo Hennen
  • Publication number: 20100330185
    Abstract: Use of a biocidal mixture containing IPBC and TBZ for protecting wood-plastic composites (WPC), containing thermoplastic polymer and wood particles, from attack and/or destruction by microorganisms.
    Type: Application
    Filed: April 17, 2008
    Publication date: December 30, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Andreas Boettcher, Peter Spetmann, Martin Kugler, Thomas Jaetsch, Gerd-Friedrich Renner, Rolf Matysiak
  • Publication number: 20100108277
    Abstract: Use of silica sols containing sulfonic acid groups and/or mercapto groups as microparticles in paper production, in particular for paper retention.
    Type: Application
    Filed: January 12, 2010
    Publication date: May 6, 2010
    Applicant: KEMIRA OYJ
    Inventors: Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann, Thomas Hubbe, Lothar Puppe
  • Patent number: 7708862
    Abstract: Use of silica sols containing sulfonic acid groups and/or mercapto groups as microparticles in paper production, in particular for paper retention.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 4, 2010
    Assignee: Kemira Oyj
    Inventors: Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann, Thomas Hübbe, Lothar Puppe
  • Publication number: 20080221222
    Abstract: The invention relates to a disinfectant which comprises a special combination of biocidal phenols and, where appropriate, phenol derivatives and a keratolytic. The disinfectant is particularly suitable for controlling parasitic protozoa including their persistent forms.
    Type: Application
    Filed: July 6, 2006
    Publication date: September 11, 2008
    Applicants: BAYER HEALTHCARE LLC, LANXESS DEUTSCHLAND GMBH
    Inventors: Gisela Greif, Robrecht Froyman, Claudio Ortiz, Gerd-Friedrich Renner, Otto Exner, Dietmar Schlegel, Rolf Matysiak
  • Publication number: 20070272383
    Abstract: Use of silica sols containing sulfonic acid groups and/or mercapto groups as nicroparticles in paper production, in particular for paper retention.
    Type: Application
    Filed: June 30, 2004
    Publication date: November 29, 2007
    Applicant: BAYER CHEMICALS AG
    Inventors: Karlheinrich Meisel, Bernd Thiele, Gerd-Friedrich Renner, Johan Kijlstra, Arno Nennemann, Thomas Hubbe, Lothar Puppe
  • Publication number: 20070037709
    Abstract: The novel enantiomerically enriched R-(+)-2-(4-chloro-2-methylphenoxy)-propionic acid polyethylene glycol esters and any of their mixtures with one another are outstandingly suitable as root penetration inhibitors and can be employed as such for the protection of buildings and building materials.
    Type: Application
    Filed: April 27, 2004
    Publication date: February 15, 2007
    Inventors: Hermann Uhr, Rainer Bruns, Heinz-Joachim Rother, Gerd-Friedrich Renner
  • Patent number: 6989106
    Abstract: A process for the preparation of polymeric condensates, wherein the reaction mixture is fed at least once during the condensation reaction through a zone of high energy density which has an energy density of at least 105 J/m3.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: January 24, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinrich Meisel, Lars Obendorf, Branislav Boehmer, Bernd Thiele, Armin Spaniol, Dietmar Fuchs, Gerd-Friedrich Renner, Thomas Huebbe
  • Publication number: 20040039152
    Abstract: A process for the preparation of polymeric condensates, wherein the reaction mixture is fed at least once during the condensation reaction through a zone of high energy density which has an energy density of at least 105 J/m3.
    Type: Application
    Filed: June 9, 2003
    Publication date: February 26, 2004
    Inventors: Karlheinrich Meisel, Lars Obendorf, Branislav Boehmer, Bernd Thiele, Armin Spaniol, Dietmar Fuchs, Gerd-Friedrich Renner, Thomas Huebbe
  • Patent number: 6254644
    Abstract: The present invention relates to a process for preparing leather by (I) tanning a pelt with (a) an aldehyde, or (b) a bisulphite-blocked polyisocyanate; (II) optionally, retanning the pelt with (a) a polyaspartic acid, a salt of a polyaspartic acid, a polyaspartic acid anhydride, or a mixture thereof, and/or (b) a polyaspartamide; (III) dressing the resultant product by (a) bottoming the product with a polyurethane and one or more natural bottoming assistants, and (b) applying a polyurethane and/or polyesteramide finish; and (IV) optionally, aftertreating the resultant dressed leather with a leather preservative.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: July 3, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harro Träubel, Hanns-Peter Müller, Helmut Reiff, Jürgen Reiners, Gerd-Friedrich Renner, Rainhard Koch, Karl Pisaric
  • Patent number: 6056787
    Abstract: Iminodisuccinic acids of the formula ##STR1## the substituents of which have the meaning given in the description, are bleaching regulators in H.sub.2 O.sub.2 bleaching of textile-forming natural plant fibers or silk, wool and their mixtures with synthetics.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: May 2, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Friedrich Renner, Michael Pirkotsch, Klaus Walz, Torsten Groth, Winfried Joentgen
  • Patent number: 5840902
    Abstract: .beta.-Hydroxyalkylpicolinium salts of the formula (I) ##STR1## wherein A, R.sup.1 to R.sup.3 and X have the meanings given in the description, which are obtained by reaction of picolines of the formula (II) ##STR2## with alkylene oxides of the formula (III) in the presence of a 1- to 3-basic acid and in water or an organic solvent as the reaction medium and are used as intermediate products for the preparation of cationic dyestuffs, and dyestuff preparations comprising such cationic dyestuffs.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: November 24, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinrich Meisel, Klaus Walz, Gerd-Friedrich Renner, Hans Schulze, Carsten Gerdes, Karl-Rudolf Gassen, Reiner Ditzer, Lothar Klein
  • Patent number: 5519121
    Abstract: Novel dyestuffs of the formula (I) ##STR1## in which DK denotes a radical of the formula ##STR2## where m is 1 or 2 and DK' denotes a radical of the formula ##STR3## where n is 1 or 2 R.sub.1 represents hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkyl,R.sub.2 represents hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,R.sub.3 represents substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -acylamino andR.sub.4 represents substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl.have now been found.The invention also relates to a process for their preparation and to their use for dyeing/coloring and printing textiles and paper, in particular in printing inks containing these dyestuffs.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: May 21, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd-Friedrich Renner, Peter Wild, Karin Hassenruck