Patents Assigned to Degussa AG
  • Publication number: 20050130264
    Abstract: The present invention relates to polynucleotides corresponding to the rpoB gene and which encode the ?-subunit of RNA polymerase B, methods of producing L-amino acids, and methods of screening for polynucleotides which encode proteins having activity of the ?-subunit of RNA polymerase B.
    Type: Application
    Filed: January 15, 2004
    Publication date: June 16, 2005
    Applicant: DEGUSSA AG
    Inventors: Bettina Moeckel, Brigitte Bathe, Thomas Hermann, Walter Pfefferle, Michael Binder
  • Patent number: 6905632
    Abstract: An aqueous dispersion is used in the chemical mechanical polishing of surfaces, particularly oxidic surfaces, such as silicon dioxide. The aqueous dispersion contains a powder of pyrogenically produced silicon dioxide doped with 0.01 and 3 wt. % aluminium oxide, relative to the total amount of powder, said powder having an average particle diameter in the dispersion of not more than 0.1 ?m.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: June 14, 2005
    Assignee: Degussa AG
    Inventors: Wolfgang Lortz, Christoph Batz-Sohn, Gabriele Perlet, Werner Will
  • Publication number: 20050124716
    Abstract: Radiation-curable resins containing a carbonyl-hydrogenated ketone-aldehyde and/or a ring-hydrogenated phenyl-aldehyde resins, and a process for preparing them.
    Type: Application
    Filed: August 17, 2004
    Publication date: June 9, 2005
    Applicant: DEGUSSA AG
    Inventors: Patrick Gloeckner, Lutz Mindach, Peter Denkinger
  • Publication number: 20050124749
    Abstract: The invention relates to hydrophobicized precipitated silicas that possess an extremely high whiteness and extremely low moisture absorption. The hydrophobic precipitated silicas are prepared, inter alia, by coating with silicone oil and oxidative heat treatment.
    Type: Application
    Filed: January 14, 2005
    Publication date: June 9, 2005
    Applicant: DEGUSSA AG
    Inventors: Uwe Schachtely, Christian Panz, Ralf Schmoll
  • Publication number: 20050124047
    Abstract: The invention relates to a process for the preparation of L-amino acids, in particular L-threonine, in which the following steps are carried out: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid and in which the aceK gene, or the nucleotide sequence which codes for this, is attenuated, in particular eliminated, b) concentration of the L-amino acid in the medium or in the cells of the bacteria, and c) isolation of the L-amino acid.
    Type: Application
    Filed: July 3, 2002
    Publication date: June 9, 2005
    Applicant: DEGUSSA AG
    Inventor: Thomas Hermann
  • Publication number: 20050124740
    Abstract: A rubber mixture which exhibits reliable processability contains (A) a rubber or mixture of rubbers, (B) a filler, (C) at least one organosilane, (D) a thiuram accelerator, and (E) a nitrogen-containing co-activator. A weight ratio of thiuram accelerator (D) to nitrogen-containing co-activator (E) is equal to or greater than 1.
    Type: Application
    Filed: November 19, 2004
    Publication date: June 9, 2005
    Applicant: DEGUSSA AG
    Inventors: Oliver Klockmann, Andre Hasse, Hans-Detlef Luginsland
  • Patent number: 6902916
    Abstract: The present invention relates to polynucleotides corresponding to the lysR1 gene and which encode a LysR1 transcriptional regulator, methods of producing L-amino acids, and methods of screening for polynucleotides which encode proteins having LysR1 transcriptional regulator activity.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 7, 2005
    Assignee: Degussa AG
    Inventors: Bettina Moeckel, Mike Farwick, Thomas Hermann, Caroline Kreutzer, Walter Pfefferle
  • Patent number: 6902715
    Abstract: The present invention provides silica particles, which include the following physical properties: BET surface area: 100-700 m2/g; DBP absorption: 100-500 g/100 g; tamped density: 100-250 g/l; ALPINE sieve residue>63?: <5%; and particle sizes (cumulative volume distribution): d95<40 ?m; d50<20 ?m; and d5<10 ?m. The present invention also provides a process for producing silica having a narrow particle size distribution, which includes drying a silica suspension in a pulse combustion dryer to produce silica particles having the following particle size distribution (cumulative volume distribution): d5<10 ?m; d50<20 ?m; and d95<40 ?m.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: June 7, 2005
    Assignee: Degussa AG
    Inventors: Ralf Maus, Thomas Barthel, Claas-Jürgen Klasen
  • Publication number: 20050119437
    Abstract: The invention relates to polyurethane powder coatings which comprise solid polyaddition compounds containing uretdione groups and to a process for their preparation. The polyurethane powder coatings cure at low temperatures and form paint films which are high gloss or matt and light- and weather-stable.
    Type: Application
    Filed: October 12, 2004
    Publication date: June 2, 2005
    Applicant: DEGUSSA AG
    Inventors: Andreas Wenning, Emmanouil Spyrou
  • Patent number: 6899951
    Abstract: The present invention provides a hydrophobic precipitated silica having the following properties: carbon content 1.0-8.0% methanol wettability ?20-55% reflectance >94% BET/CTAB ratio ??1 DBP absorption <250 g/100 g BET surface area ?50-110 m2/g CTAB surface area 100-150 m2/g Sears number <13. The present invention also provides methods for making and using the hydrophobic precipitated silica and articles and compositions which include the same.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: May 31, 2005
    Assignee: Degussa AG
    Inventors: Christian Panz, Ralf Schmoll, Michael Kempf, Mario Scholz
  • Publication number: 20050112326
    Abstract: The invention relates to shaping processes for producing moldings with at least one surface which has self-cleaning properties and has elevations formed by microparticles, by thermal shaping of materials comprising organic compounds by means of a mold, and also to the resultant moldings. The process of the invention generates surfaces with self-cleaning properties by, prior to the thermal shaping, applying microparticles to the inner surfaces of the mold and then carrying out the molding process, in which the microparticles are pressed into and anchored into the surface of the molding, where this surface has not yet solidified. The process of the invention may be used in thermal shaping processes selected from blow molding, extrusion blow molding, extrusion stretch blow molding, injection blow molding, injection stretch blow molding, thermoforming, vacuum stretch forming, pressure stretch forming, and rotary thermoforming.
    Type: Application
    Filed: February 3, 2003
    Publication date: May 26, 2005
    Applicant: Degussa AG
    Inventors: Edwin Nun, Markus Oles, Arne Lang
  • Publication number: 20050112730
    Abstract: The present invention relates to polynucleotides that encode proteins having OpcA enzymatic activity. These polynucleotides can be used for increasing lysine biosynthesis in Coryneform glutamicum.
    Type: Application
    Filed: November 1, 2004
    Publication date: May 26, 2005
    Applicant: Degussa AG
    Inventors: L. Dunican, Rita Dunican, Ashling McCormack, Cliona Stapelton, Kevin Burke, Bernd Moritz, Lothar Eggeling, Hermann Sahm, Bettina Mockel, Anke Weissenborn
  • Patent number: 6897055
    Abstract: The invention relates to polynucleotides that contain polynucleotide sequences coding for the genes sucC and sucD, selected from the group a) polynucleotide that is at least 70% identical to a polynucleotide coding for a polypeptide that contains the amino acid sequence of SEQ ID No. 2, b) polynucleotide that is at least 70% identical to a polynucleotide coding for a polypeptide that contains the amino acid sequence of SEQ ID No. 3, c) polynucleotide coding for a polypeptide that contains an amino acid sequence that is at least 70% identical to the amino acid sequence of SEQ ID No. 2, d) polynucleotide coding for a polypeptide that contains an amino acid sequence that is at least 70% identical to the amino acid sequence of SEQ ID No.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: May 24, 2005
    Assignee: Degussa AG
    Inventors: Bettina Möckel, Walter Pfefferle, Achim Marx
  • Patent number: 6896859
    Abstract: The present invention concerns a method for the production of a titanium-containing zeolite by: (a) combining a hydrolyzable silicon compound and a hydrolyzable titanium compound; (b) adding a basic quaternary ammonium compound in an aqueous medium to the mixture from (a) and hydrolysing the reaction mixture at a temperature in the range from 0° C. to 100° C. to form a synthesis sol; then (c) heating the synthesis sol to a temperature in the range from 150° C. to 190° C.; and (d) crystallizing the synthesis sol at this temperature, characterized in that the heating-up time in step (c) is less than 240 min.
    Type: Grant
    Filed: February 24, 2001
    Date of Patent: May 24, 2005
    Assignee: Degussa AG
    Inventor: Steffen Hasenzahl
  • Publication number: 20050107626
    Abstract: The invention relates to a complex compound of ruthenium of the general structural formula I in which X1 and X2 may be identical or different and represent an anionic ligand, in which R1 and R2 are identical or different, but may also have a ring, in which R1 and R2 represent hydrogen or/and a hydrocarbon group, in which the ligand L1 is a N-heterocyclic carbene and in which the ligand L2 is a neutral electron donor, especially a N-heterocyclic carbene or an amine, imine, phosphane, phosphite, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether, wherein R1, R2, R3 and R4 represent hydrogen or/and hydrocarbon groups.
    Type: Application
    Filed: December 23, 2004
    Publication date: May 19, 2005
    Applicant: Degussa AG
    Inventors: Wolfgang Herrmann, Wolfgang Schattenmann, Thomas Weskamp
  • Publication number: 20050103457
    Abstract: The invention relates to calendered web products with surfaces which have self-cleaning properties, and also to a simple process for producing these self-cleaning surfaces. The process of the invention is very simple, since it can utilize existing equipment. Calenders are usually used to produce web products from high-melt-viscosity polymers or web products with a fabric core. The process of the invention utilizes these calenders by applying microparticles on at least one roll of the calender. During passage of the webs, the microparticles are transferred to these via impression of the particles into the surface of the web products. The process of the invention provides access to self-cleaning surfaces which have particles with a fissured structure, without any need to apply an additional embossed layer or carrier layer of foreign material to the web products. Examples of uses of web products of the invention are truck tarpaulins, protective tarpaulins, awnings, sunshade roofs, and tenting.
    Type: Application
    Filed: February 3, 2003
    Publication date: May 19, 2005
    Applicant: Degussa Ag
    Inventors: Edwin Nun, Markus Oles
  • Patent number: 6894198
    Abstract: An alkali metal alkoxide or alkaline earth metal alkoxide in granular form.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: May 17, 2005
    Assignee: Degussa AG
    Inventors: Andreas Harthun, Christoph Theis, André Noppe, Josef Metz
  • Patent number: 6893495
    Abstract: Silane-modified biopolymeric, biooligomeric, oxidic or siliceous filler obtainable by reacting at least one biopolymeric, biooligomeric, oxidic or siliceous filler in a compressed gas with at least one silane. The silane-modified biopolymeric, biooligomeric, oxidic or siliceous fillers are used in rubber compounds.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: May 17, 2005
    Assignee: Degussa AG
    Inventors: Karsten Korth, Hans-Detlef Luginsland, Andre Hasse, Ingo Kiefer, Juergen Heidlas
  • Publication number: 20050101813
    Abstract: A molecular weight-enlarged, homogeneously soluble ligand, useful in catalysts, particularly for the synthesis of enantiomerically enriched organic compounds, includes: a weight average molecular weight of at least 1000 g/mol; a molecular weight-enlarging polymer; optionally, a polymer linker; and at least one homochiral active center; wherein the active center is bound to the molecular weight-enlarging polymer through the polymer linker or is bound directly to the molecular weight-enlarging polymer.
    Type: Application
    Filed: September 8, 2003
    Publication date: May 12, 2005
    Applicant: Degussa AG,
    Inventors: Hans-Peter Krimmer, Jens Woeltinger, Olaf Burkhardt, Ingo Klement, Hans Henniges, Karlheinz Drauz, Andreas Bommarius, Jean-Louis Philippe, Andreas Karau
  • Publication number: 20050100927
    Abstract: The invention relates to an isolated polynucleotide from coryneform bacteria containing at least one polynucleotide sequence selected from the group consisting of a) polynucleotide which is at least 70% identical to a polynucleotide which encodes a polypeptide containing the amino acid sequence according to SEQ ID no. 2, b) polynucleotide which encodes a polypeptide which contains an amino acid sequence which is at least 70% identical to the amino acid sequence of SEQ ID no. 2, c) polynucleotide which is complementary to the polynucleotides of a) or b), and d) polynucleotide containing at least 15 successive nucleotides of the polynucleotide sequences of a), b) or c), and to a process for the fermentative production of L-amino acids, in particular L-lysine.
    Type: Application
    Filed: December 29, 2003
    Publication date: May 12, 2005
    Applicant: Degussa AG
    Inventors: Bettina Mockel, Anke Weissenborn, Walter Pfefferle, Michael Hartmann, Jorn Kalinowski, Alfred Puhler