Patents by Inventor Rolf Wehrmann

Rolf Wehrmann 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: 6352791
    Abstract: An electroluminescent arrangement made up of at least two electrodes and a light-emitting layer system comprising at least one electron-conducting layer, the electron-conducting layer containing at least one compound having a triazine basic member.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: March 5, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Ralph Fink, Christoph Jonda, Hans-Werner Schmidt, Mukundan Thelakkat, Rolf Wehrmann, Martin Hueppauff
  • Publication number: 20020006528
    Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains a boron complex of an 8-aminoquinoline derivative.
    Type: Application
    Filed: June 30, 1999
    Publication date: January 17, 2002
    Inventors: HELMUT-WERNER HEUER, ROLF WEHRMANN, ANDREAS ELSCHNER
  • Patent number: 6327070
    Abstract: Electrochromic assemblies having a layer structure, characterized in that one layer is an electrically conductive, electrochromic polydioxythiophene and a further layer is an ion-storage compound of the formula (I) LiMeO3  (I) where Me represents a metal of transition group V of the Mendeleev Periodic Table.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 4, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann
  • Patent number: 6323988
    Abstract: The invention relates to electrochromic assemblies having a layer structure, characterized in that one layer is an electrically conductive, electrochromic polydioxythiophene and a further layer is an ion-storage compound selected or a mixture of ion-storage compounds of the formulae (I) to (XIV). Me1O (I) Me1(OH)2 (IX) Me1OX (II) Me1O(OH) (X) MXMe1O (III) MMe1O2 (XI) MXMe1O2 (IV) Me1O2 (XII) MxMe1Oy (V) Me12O3 (XIII) Me2O3 (VI) Me12O3.H2O (XIV) MXMe2O3 (VII) MXMe2(1−x)O3 (VIII) where Me1 and Me2 each represent a metal transition group VI or VII of the Mendeleev Periodic Table, M represents a metal of main group I of the Mendeleev Periodic Table or a proton, x represents a number from 0.001 to 5, y represents a number from 0.001 to 5.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: November 27, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann
  • Patent number: 6316130
    Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains an azomethine-metal complex.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: November 13, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Andreas Elschner
  • Publication number: 20010026879
    Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally contain repeat units of the general formula (3) 1
    Type: Application
    Filed: May 8, 2001
    Publication date: October 4, 2001
    Inventors: Yun Chen, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 6294273
    Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the stated order, where each of the zones present can also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains an N-alkyl-2,2′-imino-bis-(8-hydroxyquinoline)-metal complex.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: September 25, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Andreas Elschner
  • Patent number: 6287713
    Abstract: Electroluminescent assembly comprising a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element contains one or more zones selected from the group consisting of hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and electron injection zone in the order specified, where each of the zones present may also assume functions of the other zones mentioned, characterized in that the electroluminescent element contains a boron complex of an 8-hydroxyquinoline derivative.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: September 11, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Werner Heuer, Rolf Wehrmann, Andreas Elschner
  • Patent number: 6277504
    Abstract: Electroluminescent assemblies containing a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element can contain in order: a hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and/or an electron injection zone, characterized in that the hole injection and hole transport zone is a substituted or unsubstituted 1,3,5-tris(aminophenyl)benzene compound A or a mixture thereof and the electroluminescent element may, if desired, contain a further functionalized compound selected from the group consisting of hole transport materials, a luminescent material B and, if desired, electron transport materials, where the hole injection and hole transport zone can contain, in addition to the component A, one or more further hole transport compounds, where at least one zone is present, individual zones can be left out and the zone(s) present can assume a plura
    Type: Grant
    Filed: March 20, 1999
    Date of Patent: August 21, 2001
    Assignee: Bayer AG
    Inventors: Friedrich Koch, Helmut Werner Heuer, Rolf Wehrmann, Martin Deussen, Andreas Elschner
  • Patent number: 6248457
    Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally contain repeat units of the general formula (3) in which L1 and L2 mean a photoluminescent residue, wherein the proportion of structural units of the formulae (1) and/or (2) is in each case 0.5 to 100 mol. %, and (3) 0 to 99.5 mol. %, and the molar percentages add up to 100, to the use thereof for the production of electroluminescent devices and to the electroluminescent devices.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: June 19, 2001
    Assignee: Bayer AG
    Inventors: Yun Chen, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 6175441
    Abstract: Electrochromic assemblies having a layer structure, characterized in that one layer is an electrically conductive, electrochromic polydioxythiophene and a further layer comprises as ion storage compounds selected from the group consisting of the formulae (I) to (VI) Me1O2  (I), Me22O5  (II), LixMe1O2  (III), LixMe22O5  (IV), LixMe1O2+x/2  (V), LixMe22O5+x/2  (VI), where Me1 and Me2 are each a metal of transition group III, IV and V of the Mendeleev Periodic Table, and x is from 0.001 to 5.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: January 16, 2001
    Assignee: Heuer
    Inventors: Helmut Werner Heuer, Rolf Wehrmann, Friedrich Jonas, Frank Osenberg
  • Patent number: 6157479
    Abstract: UV-stabilized electrochromic assemblies having a layer structure, characterized in that one layer contains an electrically conductive, electrochromic polydioxythiophene and a further layer contains an inorganic ion-storage compound based on metal oxides or a mixture of such ion-storage compounds, where the gel electrolyte is chemically crosslinked and contains chemically bound UV absorbers which cannot migrate as UV protection.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 5, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann
  • Patent number: 6143823
    Abstract: Thermoplastically processable thermotropic molding compounds of thermotropic polycondensates and 0.05 to 5% by weight functionalized polymers, such as for example functionalized polybutadiene oils, polyethylene or polypropylene.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: November 7, 2000
    Assignee: Bayer AG
    Inventors: Rolf Wehrmann, Alexander Karbach, Thomas Elsner, Peter Tappe
  • Patent number: 6114463
    Abstract: The present invention relates to (co)polymers which contain at least one repeating structural chain unit of the general formula (1) and/or (2) and optionally repeating units of the general formula (3) ##STR1## in which L.sup.1 and L.sup.2, independently of each other, represent a photoluminescent grouping, a process for their preparation, their use in electroluminescent devices and the electroluminescent devices.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: September 5, 2000
    Assignee: Bayer AG
    Inventors: Yun Chen, Burkhard Kohler, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 6083635
    Abstract: Mixtures ofA) neutral polythiophenes of formula (I), ##STR1## wherein R.sub.1 and R.sub.2 separately from one another represent hydrogen or a C.sub.1-4 alkyl group or together form an optionally substituted C.sub.1-4 alkylene radical, preferably a methylene radical optionally substituted by alkyl groups, an ethylene-1,2 radical optionally substituted by C-.sub.1-12 alkyl or phenyl groups, or a cyclohexylene-1,2 radical, andB) organic compounds containing dihydroxy or polyhydroxy and/or carboxyl groups or amide groups or lactam groups,as well as transparent, electrically conducting coatings made therefrom and electroluminescent systems containing a conductive layer produced from the abovementioned mixtures as the electrode.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: July 4, 2000
    Assignee: Bayer AG
    Inventors: Friedrich Jonas, Alexander Karbach, Bavo Muys, Etienne van Thillo, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 6075106
    Abstract: The present invention relates to (co)polymers which contain at least one repeat chain unit selected from the group comprising the general formula (1) and (2) and optionally (3), ##STR1## in which L.sup.1 and L.sup.2 mutually independently mean a photoluminescent residue.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: June 13, 2000
    Assignee: D-51368 Bayer AG
    Inventors: Yun Chen, Burkhard Kohler, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 5917279
    Abstract: The present invention relates to intermediate layers of inorganic materials in electroluminescent arrangements which contain finely divided inorganic particles (nano-particles) dispersed in a polymer binder.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: June 29, 1999
    Assignee: Bayer Aktiengesllschaft
    Inventors: Andreas Elschner, Rolf Wehrmann, Kai Butje
  • Patent number: 5905128
    Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally repeat units of the general formula (3), ##STR1## in which L.sup.1 and L.sup.2 denote a photoluminescent residue,wherein the proportion of structural units of the formulae (1) and/or (2) is in each case 0.5 to 100 mol. % and of (3) is 0 to 99.5 mol. % and the molar percentages add up to 100,to the use thereof for the production of electroluminescent arrangements and to the electroluminescent arrangements.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: May 18, 1999
    Assignee: Bayer AG
    Inventors: Yun Chen, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 5891975
    Abstract: The present invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally repeat units of the general formula (3), ##STR1## in which L.sup.1 and L.sup.2 mutually independently mean a photoluminescent residue, to a process for the production thereof, to the use thereof in electroluminescent devices and to the electroluminescent devices.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: April 6, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Yun Chen, Burkhard Kohler, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 5874180
    Abstract: The invention relates to electroluminescent arrangements (layers) containing special styrenes and to their use.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: February 23, 1999
    Assignee: Bayer AG
    Inventors: Rolf Wehrmann, Andreas Elschner, Siegfried Thurm, Hans Jurgen Rosenkranz, Ralf Dujardin