Patents by Inventor Herbert Plach

Herbert Plach 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).

  • Publication number: 20190093013
    Abstract: A liquid-crystalline medium, preferably having a nematic phase and exhibiting a dielectric anisotropy of 0.5 or more, which contains compounds of formula B and formula S in which denotes denotes the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, displays of this type which contain a liquid-crystalline medium of this type, and the use of the compounds of formula S for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 28, 2019
    Applicant: MERCK PATENT GMBH
    Inventors: Atsutaka MANABE, Constanze BROCKE, Herbert PLACH
  • Publication number: 20170088776
    Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.
    Type: Application
    Filed: December 12, 2016
    Publication date: March 30, 2017
    Applicant: Merck Patent GmbH
    Inventors: Melanie KLASEN-MEMMER, Izumi SAITO, Herbert PLACH, Kazuaki TARUMI
  • Patent number: 9567522
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 14, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
  • Patent number: 9550942
    Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 24, 2017
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Izumi Saito, Herbert Plach, Kazuaki Tarumi
  • Patent number: 8409469
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 2, 2013
    Assignee: Merck Patent GmbH
    Inventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Diane Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
  • Patent number: 8333906
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerization of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: December 18, 2012
    Assignee: Merck Patent GmbH
    Inventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Diane Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
  • Publication number: 20120012785
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Inventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Diane Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
  • Patent number: 7998541
    Abstract: The present invention relates to benzochromene derivatives of the formula I where the various parameters have the meaning indicated in the text, and to liquid-crystal media which comprise these compounds, and to the use of the media in electro-optical displays, in particular in TN, OCB, LCOS and/or IPS-LCDs, and to the use of the compounds and physiologically acceptable derivatives thereof as therapeutic active ingredients.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: August 16, 2011
    Assignee: Merck Patent GmbH
    Inventors: Andreas Taugerbeck, Elvira Montenegro, Atsutaka Manabe, Herbert Plach
  • Patent number: 7794621
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: September 14, 2010
    Assignee: Merck Patent GmbH
    Inventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Diane Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
  • Publication number: 20090267025
    Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerisation of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.
    Type: Application
    Filed: November 22, 2005
    Publication date: October 29, 2009
    Inventors: Cecile Schott, Patrick John, Adlem Kevin, Farrand Diane Louise, Bernatz Georg, Goetz Achim, Best Peter, Herbert Plach
  • Publication number: 20090247620
    Abstract: The present invention relates to benzochromene derivatives of the formula I where the various parameters have the meaning indicated in the text, and to liquid-crystal media which comprise these compounds, and to the use of the media in electro-optical displays, in particular in TN, OCB, LCOS and/or IPS-LCDs, and to the use of the compounds and physiologically acceptable derivatives thereof as therapeutic active ingredients.
    Type: Application
    Filed: December 5, 2006
    Publication date: October 1, 2009
    Inventors: Andreas Taugerbeck, Elvira Montenegro, Atsutaka Manabe, Herbert Plach
  • Publication number: 20090213318
    Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.
    Type: Application
    Filed: June 13, 2005
    Publication date: August 27, 2009
    Inventors: Melanie Klasen-Memmer, Izumi Saito, Herbert Plach, Kazuaki Tarumi
  • Patent number: 7445818
    Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: November 4, 2008
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
  • Publication number: 20080173844
    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: Application
    Filed: July 19, 2007
    Publication date: July 24, 2008
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Reiger, Joachim Krause
  • Publication number: 20070275182
    Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.
    Type: Application
    Filed: December 18, 2006
    Publication date: November 29, 2007
    Inventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Kurmeier, Ekkehard Bartmann
  • Patent number: 7250199
    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: January 21, 2005
    Date of Patent: July 31, 2007
    Assignee: Merck Patent GmbH
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause
  • Patent number: 7186447
    Abstract: Described are matrix liquid crystal displays having two plane parallel support plates which together with a frame form a cell, integrated non-linear elements for switching individual picture elements on the support plates and a nematic liquid crystal mixture which is present in the cell and has a positive dielectric anisotropy and high resistivity. The liquid crystal mixture has a nematic phase range of at least 60° C., a maximum viscosity at 20° C. of 30 mPa·s and a mean dielectricity constant ??8. The liquid crystal mixture contains: a) at least 10% by weight of a liquid-crystalline component B having one or more compounds of the following formulae: and b) up to 90% by weight of a liquid-crystalline component A having one or more compounds with a dielectric anisotropy of ?1.5 to 1.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: March 6, 2007
    Assignee: Merck Patent GmbH
    Inventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
  • Patent number: 6955837
    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: September 28, 2001
    Date of Patent: October 18, 2005
    Assignee: Merck Patent GmbH
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause
  • Publication number: 20050196551
    Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 8, 2005
    Inventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Kurmeier, Ekkehard Bartmann
  • Publication number: 20050133763
    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: Application
    Filed: January 21, 2005
    Publication date: June 23, 2005
    Inventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Rieger, Joachim Krause