Patents Assigned to Aventis Research & Technologies GmbH & Co. KG
  • Patent number: 6822094
    Abstract: Spiro compounds of the formula (I), in which at least one of the radicals K1, L, M, N1, R1, R2, R3, R4 is one of the following groups are suitable as charge transport materials, in particular for photovoltaic cells, and as electroluminescence materials.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: November 23, 2004
    Assignee: Aventis Research & Technologies, GmbH & Co. KG
    Inventors: Josef Salbeck, Donald Lupo
  • Patent number: 6704086
    Abstract: The monostable ferroelectric active matrix display contains a liquid crystal layer in from of a monodomain with an unambiguously defined direction of the normal z to the layer of the smC* phase and is characterized by the fact that the normal z to the layer and the preferential direction n of the nematic or cholesteric phase (N* phase) form an angle of more than 5°.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: March 9, 2004
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Hans-Rolf Dübal, Rainer Wingen, Toshiaki Nonaka
  • Patent number: 6661494
    Abstract: The monostable ferroelectric active matrix display comprises a liquid-crystal layer in the form of a monodomain having an unambiguously defined direction of the layer normal z of the smC* phase, the liquid-crystal layer preferably having a chevron C-1, chevron C-2 or bookshelf geometry.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: December 9, 2003
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Hans-Rolf Dübal, Rainer Wingen, Toshiaki Nonaka
  • Patent number: 6645568
    Abstract: The invention relates to a process for producing a coating having a titanium boride content of at least 80% by weight, in which a coating having a thickness of from 0.1 mm to 1 mm, a porosity of not more than 10% by volume and an oxygen content of less than 1% by weight is applied to the surface of a substrate by plasma spraying in an atmosphere which is virtually or completely free of oxygen, with no metallic powder being added to the spraying powder.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: November 11, 2003
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Katharina Seitz, Stephan Süssbrich, Michael Hornung, Heinrich Kühn, Frank Hiltmann
  • Patent number: 6605323
    Abstract: In a monostable ferroelectric active matrix display comprising a liquid-crystal layer in the form of a monodomain having an unambiguously defined direction of the layer normals z of the smC* phase, the layer normals z and the preferential direction n of the nematic or cholesteric phase (N* phase) form an angle of more than 5°.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: August 12, 2003
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Rainer Wingen, Barbara Hornung, Toshiaki Nonaka
  • Patent number: 6589785
    Abstract: A method for disrupting frozen cells and/or tissue in a solid, frozen state in the presence of a solid denaturing substance is provided. The method comprises providing frozen cells and/or tissue in frozen solid form, adding thereto the solid denaturing substance in sold form, and applying mechanical force thereto for disruption of the frozen cells and/or tissue. The frozen cells and/or tissue include muscle cells and/or muscle tissue, wheat cells and/or wheat tissue, and maize cells and/or maize tissue. Further, the solid, denaturing substance in solid form is a crystalline substance and can be selected from urea, thiourea, guanidium chloride, guanidium thiocyanate and ammonium sulfate. Also the solid, denaturing substance in solid form is added to the frozen cells and/or tissue in frozen form in an approximately 1 to 20 fold (w/w) excess.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: July 8, 2003
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Stefan Müllner, Thomas Neumann
  • Patent number: 6582916
    Abstract: Provided is a method for characterising an analyte, which method comprises: a) providing a compound in which the analyte is attached by at cleavable linker to a mass marker relatable to the analyte; b) cleaving the mass marker from the analyte; and c) identifying the mass marker, thereby characterising the analyte, wherein the mass marker comprises a metal ion-binding moiety.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: June 24, 2003
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Gunter Schmidt, Andrew Hugin Thompson, Robert Alexander W. Johnstone
  • Patent number: 6579681
    Abstract: The present invention relates to a test system comprising (a) one or more identical or different immobilized nucleic acid(s) having at least one spliceable nucleic acid, (b) at least one gel-free detection system for detecting a splicing reaction, where appropriate (c) at least one composition comprising splicing components, and preferably (d) suitable detection probes, and, where appropriate, (e) further aids.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: June 17, 2003
    Assignee: Aventis Research and Technologies GmbH & Co. KG
    Inventors: Christoph Hüls, Bettina Bauer, Claus Simandi, Reinhard Lührmann, Tilmann Achsel, Hans-Peter Vornlocher
  • Patent number: 6576470
    Abstract: The invention pertains to a process for examining chemical reactions in the presence of potentially catalytical substances, wherein reactions are triggered in miniaturized reactors with volumes of 0.001 cm3 to 1 cm3 arranged parallel to each other, and the nature and amount of the reaction mixture are analyzed during the reaction time.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: June 10, 2003
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Norbert Windhab, Christian Miculka, Hans-Ulrich Hoppe
  • Publication number: 20030039997
    Abstract: The invention relates to a pentopyranosylnucleoside of the formula (I) or of the formula (II) 1
    Type: Application
    Filed: May 16, 2002
    Publication date: February 27, 2003
    Applicant: Aventis Research and Technologies GmbH & Co. KG
    Inventors: Christian Miculka, Norbert Windhab, Tilmann Brandstetter, Gerhard Burdinski
  • Patent number: 6509507
    Abstract: A process for preparing polymerizable biaryl derivatives comprises reacting an aromatic comprising a 6-membered ring which bears ester or benzylic OH groups in the 1,4 position with a second aromatic in a palladium-catalyzed cross-coupling reaction to give a biaryl and converting the ester or benzylic OH groups into polymerizable groups in one or more steps. The biaryls obtained are suitable for preparing polymers which are used as electroluminescence materials.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: January 21, 2003
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Hubert Spreitzer, Willi Kreuder, Heinrich Becker, Jochen Krause
  • Patent number: 6485797
    Abstract: A ferroelectric liquid crystal mixture, especially useful for operation in the &tgr;Vmin−mode, comprises a 5-Arylindane derivative of the formula (I), wherein Y is CH, CF or N and R1(—A1—M1)a(—A2—M2)b—, (M3—A3—)cR2 are mesogenic groups.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: November 26, 2002
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Wolfgang Schmidt, Javier Manero, Barbara Hornung, Rainer Wingen, Ayako Ogawa
  • Patent number: 6482478
    Abstract: Fluorinated derivatives of phenanthrene, and their use in liquid-crystal mixtures Fluorinated phenanthrene derivatives of the formula (I)  in which G1 is —CH═CH— or —CH2CH2— X is H or F Y is H or F, and R1 and M1—A1—R2 are mesogenic radicals, are suitable as components of liquid-crystalline mixtures.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: November 19, 2002
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventor: Rainer Wingen
  • Patent number: 6451307
    Abstract: The present invention relates to a poly(A)-specific 3′-exonuclease activity which can be obtained by chromatographically purifying a crude extract of animal or human cells and to its use for deadenylating 3′-poly(A) tails of nucleic acids and as a pharmaceutical or diagnostic agent, or for identifying functional interactors.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 17, 2002
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Thomas Neumann, Christoph Hüls, Karl-Christian Gallert, Anders Virtanen, Jonas Aström, Javier Martinez, Ann-Charlotte Thuresson, Yanguo Ren
  • Patent number: 6437175
    Abstract: The present invention relates to a process for the racemization of N-acylamino acids of the formula (I) R—CH(NR1COR2)CO2H   (I) in which, in a solvent, an enantiomerically enriched mixture or an enantiomerically pure compound of the formula (I) is reacted in the presence of a transition metal salt, transition metal complex or transition metal complex salt or of a mixture thereof comprising at least one element from the group consisting of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, preferably at a temperature of 10-150° C.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: August 20, 2002
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Thomas Riermeier, Matthias Beller, Daniel Schichl, Martin Hateley
  • Patent number: 6433152
    Abstract: The invention relates to sophoroselipids of formula (I) wherein R4 represents H, —CH2CH3, —CH2CH2CH3, n is an integer number from 2 to 27, R1 and R2 represent, independently from each other, H or a group of formula (II), and R3 represents H or —OH. The invention also relates to a method for producing sophoroselipids of formula (I) wherein R1, R2, R3 and n have the aforementioned meanings and R4 represents —CH3, —CH2CH3 or —CH2CH2CH3. According to this method, a yeast capable of secreting a sophoroselipid in the form of a lactone in the culture excess, is fermented in a culture medium containing a glycerin. a succinate, a mono-, di- and/or tri-saccharide and a lipid precursor, said sophoroslipid being then isolated from the culture solution. The inventive method is characterised in that the lipid precursor contains one or more 3-alkanols, 4-alkanols or an alkanone with a chain length from 6 to 30 carbon atoms or mixtures of said alkanoistalkanone.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: August 13, 2002
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Siegmund Lang, Andreas Brakemeier, Dieter Wullbrandt, Andreas Seiffert-Störicko
  • Patent number: 6428885
    Abstract: The invention relates to a support body with a coating of at least 95% by weight titanium boride, said coating having an oxygen content of less than or equal to 1% by weight, a metallic impurities content of less than or equal to 0.5% by weight, and a specific electrical resistance of less than or equal to 10 &mgr;&OHgr;·m at room temperature.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: August 6, 2002
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Katharina Seitz, Stephan Süssbrich, Michael Hornung, Heinrich Kühn, Frank Hiltmann
  • Patent number: 6406530
    Abstract: Thermoplastic mixture based on biopolymers for producing shaped biodegradable articles with improved properties, preparation of the mixture, and also its use. A novel thermoplastic mixture based on biopolymers, in particular on starch, features the presence of lignin and is used for producing shaped biodegradable articles with improved properties, preferably with improved mechanical properties.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: June 18, 2002
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Holger Bengs, Gitte Böhm
  • Patent number: 6403345
    Abstract: The present invention relates to a process for the preparation of &ggr;-linolenic acid (GLA) from Colpidium and its use in foodstuffs, cosmetics and pharmaceuticals. Colpidium can be fermentatively cultured up to a high absolute yield of GLA in an optimized medium.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: June 11, 2002
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Thomas Kiy, Kay Brinkmann
  • Patent number: 6403299
    Abstract: The present invention relates to the identification and molecular-biological and biochemical characterization of novel DEAH-box proteins which show structural similarity with other known helicases. The invention also relates to DNA sequences encoding such proteins. It is demonstrated that such proteins bind ATP and nucleic acid and possess helicase and ATPase activities. This invention further relates to processes for preparation of such proteins and their use in pharmacologically relevant test systems and therapeutic applications.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 11, 2002
    Assignee: Aventis Research & Technologies GmbH & Co. KG
    Inventors: Bernd Kirschbaum, Stefan Muellner, Robert Bartlett