Patents by Inventor Joachim Krause

Joachim Krause 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).

  • Dioxane derivatives, and liquid-crystalline medium
    Patent number: 6620468
    Abstract: The invention relates to novel dioxane derivatives of the formula I R1—(A1—Z1)m—A2—C2F4—A3—(Z2—A4)n—R2  I in which R1, R2, A1, A2, A3, A4, Z1, Z2, m and n are as defined herein, to their use as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: September 16, 2003
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Matthias Bremer, Peer Kirsch, Detlef Pauluth, Sabine Schoen, Kazuaki Tarumi, Georg Lüssem, Michael Heckmeier, Joachim Krause
  • Liquid crystal compounds, liquid crystal medium and liquid crystal display
    Patent number: 6569505
    Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, preferably comprising isothiocyanate compounds, most preferably compounds of formula I, as given in the text, and a further dielectrically positive component B, preferably comprising terminally polar substituted bi- or terphenyl compounds, most preferably comprising compounds of formula II, as given in the text, further to novel isothiocyanato compounds as well as to liquid crystal displays comprising these media, in particular to PDLC display and most particular to holographic PDLC displays. The instant invention further relates to compounds of formula I wherein the parameters are as as specified in the text.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: May 27, 2003
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Eike Poetsch, Atsutaka Manabe, Volker Reiffenrath, Marcus Reuter, Volker Meyer, Joachim Krause, Detlef Pauluth
  • Tetracyclic and pentacyclic compounds, and their use in liquid-crystalline media
    Publication number: 20030078447
    Abstract: Disclosed is a tetracyclic compound of the formula I 1
    Type: Application
    Filed: August 13, 2001
    Publication date: April 24, 2003
    Applicant: MERCK PATENTGESELLSCHAFT
    Inventors: Peer Kirsch, Joachim Krause, Georg Lussem, Dagmar Klement
  • Cyclohexane derivatives and liquid-crystalline medium
    Patent number: 6551666
    Abstract: The invention relates to cyclohexane derivatives of the formula I in which n, m, p, R1, X1, X2, Z1, Z2, Z3, A1 A2 and Y are as defined above.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: April 22, 2003
    Assignee: Merck Patent Gesellschaft Mit
    Inventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
  • Ester compounds and their use in liquid-crystalline media
    Patent number: 6541081
    Abstract: The invention relates to esters of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, A1, Z1, L1, L2, Y and n are as defined in herein.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: April 1, 2003
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Matthias Bremer, Michael Heckmeier, Joachim Krause, Brigitte Schuler, Achim Götz
  • Liquid-crystalline medium
    Patent number: 6541082
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R1 and R2 are as defined herein.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: April 1, 2003
    Assignee: Merck Patent Gesellschaft
    Inventors: Georg Lüssem, Dagmar Klement, Christian Hock, Detlef Pauluth, Matthias Bremer, Joachim Krause
  • Fluorocyclohexene derivatives, and liquid-crystalline medium
    Patent number: 6475595
    Abstract: Fluorocyclohexene derivatives of formula I R1—(A1—Z1)n—A—(Z2—A2)m—Z3—B—(Z4—A3)p—R2  I, in which n, m, p, R1, R2, Z1, Z2, Z3, Z4, A1, A2, A3, A and B are as defined herein, are suitable for use in liquid crystal mediums. Also, difluorocyclohexanes of formula III R3—A*—(Z6—A7)m—Z7—Qr—R7  III, where R3, A*, Z6, A7, m, Z7, Q, r, and R4 are as defined herein, are suitable for use in liquid crystal mediums.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: November 5, 2002
    Assignee: Merck GmbH
    Inventors: Matthias Bremer, Detlef Pauluth, Joachim Krause, Michael Heckmeier, Peer Kirsch
  • Vinylene and ethyl compounds
    Patent number: 6468608
    Abstract: Vinyldene and ethyl compounds of the formula I in which R1, R2, A1, Z1, Z2, Z3, m, n and R are as defined herein, where at least one of Z1 to Z3 is wherein L1 to L6 are each H or F and at least one of L1 to L2 is F or at least one of L3 to L6 is F, are suitable as components of liquid-crystalline media.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: October 22, 2002
    Assignee: Merck Patent GmbH
    Inventors: Matthias Bremer, Detlef Pauluth, Kazuaki Tarumi, Joachim Krause, Michael Heckmeier
  • Liquid crystal compounds, liquid crystal medium and liquid crystal display
    Publication number: 20020142108
    Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, preferably comprising isothiocyanate compounds, most preferably compounds of formula I, as given in the text, and a further dielectrically positive component B, preferably comprising terminally polar substituted bi- or terphenyl compounds, most preferably comprising compounds of formula II, as given in the text, further to novel isothiocyanato compounds as well as to liquid crystal displays comprising these media, in particular to PDLC display and most particular to holographic PDLC displays.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 3, 2002
    Inventors: Eike Poetsch, Atsutaka Manabe, Volker Reiffenrath, Marcus Reuter, Volker Meyer, Joachim Krause, Detlef Pauluth
  • Cyclohexane derivatives and liquid-crystalline medium
    Publication number: 20020134967
    Abstract: The invention relates to cyclohexane derivatives of the formula I 1
    Type: Application
    Filed: June 28, 2001
    Publication date: September 26, 2002
    Applicant: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
  • Dioxane derivatives, and liquid-crystalline medium
    Publication number: 20020130300
    Abstract: The invention relates to novel dioxane derivatives of the formula I
    Type: Application
    Filed: August 6, 2001
    Publication date: September 19, 2002
    Applicant: Merck GmbH
    Inventors: Matthias Bremer, Peer Kirsch, Sabine Schoen, Detlef Pauluth, Kazuaki Tarumi, Georg Lussem, Michael Heckmeier, Joachim Krause
  • 2,6-di-tert-butylphenols
    Patent number: 6444278
    Abstract: The present invention relates to 2,6-di-tert-butylphenols of the formula I in which R, A1 A2, Z1, Z2 m and n are as defined herein, and their use as stabilizers or antioxidants.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: September 3, 2002
    Assignee: Merck Patent Gesellschaft Mit Beschraenkter Haftung
    Inventors: Volker Reiffenrath, Joachim Krause
  • Phenylcyclohexanes and a liquid-crystalline medium
    Publication number: 20020043646
    Abstract: Novel phenylcyclohexanes of the formula I 1
    Type: Application
    Filed: September 28, 2001
    Publication date: April 18, 2002
    Applicant: MERCK KGAA
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause
  • Liquid-crystalline medium
    Publication number: 20020027217
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I 1
    Type: Application
    Filed: April 13, 2001
    Publication date: March 7, 2002
    Applicant: Merck Patent Gesellschaft mit Beschrankt Patents
    Inventors: Georg Lussem, Dagmar Klement, Christian Hock, Detlef Pauluth, Matthias Bremer, Joachim Krause
  • Pentafluorosulfuranylbenzene derivatives
    Publication number: 20020028306
    Abstract: The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I 1
    Type: Application
    Filed: June 27, 2001
    Publication date: March 7, 2002
    Inventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
  • Device and method for suppressing signals when inspecting prestressed construction elements
    Patent number: 6300759
    Abstract: A test device and process for inspecting the integrity of prestressed construction elements. The device comprises a testing head having a magnetization device for generating a magnetic field around the construction element. The testing head is connected to a controller device for controlling the magnetization process and for processing signals corresponding to the magnetic field. The testing head magnetizes the construction element over a predetermined measurement section. The controller switches the magnetization device after the magnetization process is completed and then stores and processes the signals recorded.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: October 9, 2001
    Assignees: Forschungszentrum Jülich GmbH, Forschungs- und Materialprüfungsanstalt Baden-Württemberg
    Inventors: Herbert Bousack, Hans-Joachim Krause, Gottfried Sawade
  • Phenylcyclohexanes and a liquid-crystalline medium
    Patent number: 6284154
    Abstract: Novel phenylcyclohexanes of the formula I in which n is 0 to 7, Q1 and Q2 are H, or one of these radicals is alternatively CH3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, —CF3, —CN, —OCF3 or —OCHF2, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q1═Q2═H and simultaneously X═CN, Y and/or Z are F.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 4, 2001
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Andreas Wächtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause
  • Phenylcyclohexanes and a liquid-crystalline medium
    Publication number: 20010015422
    Abstract: Novel phenylcyclohexanes of the formula I 1
    Type: Application
    Filed: February 8, 2001
    Publication date: August 23, 2001
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause
  • Liquid-crystalline compounds, and liquid-crystalline medium
    Patent number: 6146719
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, including one or more compounds of the general formula I: ##STR1## in which, R is H, an alkyl or alkenyl radical having 1 or 2 to 15 carbon atoms respectively which is unsubstituted, monosubstituted by CN or .sub.CF. or at least monosubstituted by halogen, where one or more CH.sub.2 groups in these radicals may also, in each case independently of one another, be replaced by --O--, --S--, ##STR2## --CO--, --CO--O--, --O--CO--, or --O--CO--O-- in such a way that O atoms are not linked directly to one another,m is 0 or 1,n is 0, 1 or 2, andm+n is 1, 2 or 3.
    Type: Grant
    Filed: September 25, 1999
    Date of Patent: November 14, 2000
    Assignee: Merck Patent Gesellschatf mit beschrankter Haftung
    Inventors: Eike Poetsch, Brigitte Schuler, Michael Heckmeier, Volker Reiffenrath, Werner Binder, Joachim Krause
  • Fluorinated biphenylcyclohexanes, and liquid-crystalline medium
    Patent number: 6143199
    Abstract: Fluorinated biphenylcyclohexanes of the formula I ##STR1## in which R, X, Z, L.sup.1, L.sup.2, L.sup.3 and n are as defined herein, are suitable as components of liquid-crystalline media.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: November 7, 2000
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Matthias Bremer, Kazuaki Tarumi, Joachim Krause