Patents by Inventor Atsutaka Manabe

Atsutaka Manabe 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: 20050279968
    Abstract: The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I and at least one compound of the formula II and to the use thereof for electro-optical purposes, and to displays containing this medium.
    Type: Application
    Filed: September 25, 2003
    Publication date: December 22, 2005
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Ulrich Heywang, Detlef Pauluth, Michael Heckmeier, Peer Kirsch, Elvira Montenegro
  • Publication number: 20050179007
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one pyran compound of the formula I and one or more compounds selected from the group consisting of the compounds C-1 to C-5 in which the R, R1, the rings A, B and P, L1-6, X, X1, Z1, Z2, m and n are as defined above and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Application
    Filed: December 17, 2004
    Publication date: August 18, 2005
    Inventors: Atsutaka Manabe, Peer Kirsch, Eike Poetsch, Georg Luessem, Michael Heckmeier, Melanie Klasen-Memmer
  • Patent number: 6905741
    Abstract: A liquid-crystalline medium comprises one or more compounds of the general formula (I) CF3O-a-b-c-F??(I) in which a, b, c may each denote, independently of one another, and further liquid-crystalline compounds.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: June 14, 2005
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer, Detlef Pauluth
  • Patent number: 6858267
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the general formula (I) in which R is an alkyl radical, alkoxy radical or alkenyl radical having from 1 to 7 or 2 to 7 carbon atoms respectively, in which one or more CH2 groups may be replaced by —O— in such a way that oxygen atoms are not adjacent, and in addition further liquid-crystalline compounds.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: February 22, 2005
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Peer Kirsch, Gerald Unger
  • Patent number: 6846523
    Abstract: A liquid-crystalline medium of positive dielectric anisotropy and high optical anisotropy, comprising one or more compounds of the formula I and one or more compounds of the formulae II and/or III and its use in electro-optical displays and projection systems, in particular LCoS™ displays and displays based on a birefringence effect, such as OCB displays, is described.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: January 25, 2005
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer
  • Publication number: 20040245500
    Abstract: A liquid-crystalline medium of positive dielectric anisotropy and high optical anisotropy, comprising one or more compounds of the formula I 1
    Type: Application
    Filed: March 8, 2004
    Publication date: December 9, 2004
    Inventors: Atsutaka Manabe, Matthias Bremer
  • Patent number: 6827989
    Abstract: The invention relates to a liquid-crystalline medium with positive dielectric anisotropy and high optical anisotropy, characterized in that it contains one or more biphenyl derivatives comprising a terminal alkenyl group, and its use in electrooptical displays and projection systems, in particular reflective displays and displays based on a birefringence effect, such as OCB displays.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 7, 2004
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Volker Reiffenrath
  • Patent number: 6761939
    Abstract: Liquid crystalline media comprising a dielectrically positive component, component A, containing dielectrically positive compounds, comprising one or more compounds of formula I and one or more compounds of formula II and one or more dielectrically neutral compounds of formula IVb wherein the parameters have the meaning defined therein; and wherein two of the 6-membered rings in formula IVb may optionally be linked by an group selected from —CH2—CH2—, —CF2—CF2—, —CF2—O—, —O—CF2— and —CO—O— are sutiable for use in liquid crystal displays, especially active matrix displays.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: July 13, 2004
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Elena Kress, Volker Reiffenrath
  • Patent number: 6753046
    Abstract: The invention relates to a liquid crystalline compound of the formula I wherein X1 and R1 are defined as in claim 1. The invention further relates to a liquid crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy containing one or more compounds of formula I and its use in electrooptical displays and projection systems, in particular reflective displays and displays based on a birefringence effect, such as OCB displays.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: June 22, 2004
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer
  • Publication number: 20040055529
    Abstract: Liquid-crystalline medium having a dielectric anisotropy &Dgr;&egr; of ≧3, comprising compounds of the general formula (I), 1
    Type: Application
    Filed: September 10, 2003
    Publication date: March 25, 2004
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer, Elena Kress
  • Publication number: 20040026661
    Abstract: A liquid-crystalline medium comprises one or more compounds of the general formula (I)
    Type: Application
    Filed: April 16, 2003
    Publication date: February 12, 2004
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer, Detlef Pauluth
  • Publication number: 20030197154
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the general formula (I) 1
    Type: Application
    Filed: April 16, 2003
    Publication date: October 23, 2003
    Applicant: MERCK PAPTENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Atsutaka Manabe, Peer Kirsch, Gerald Unger
  • Publication number: 20030190436
    Abstract: The invention relates to a liquid crystalline compound of the formula I 1
    Type: Application
    Filed: November 7, 2002
    Publication date: October 9, 2003
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Matthias Bremer
  • Publication number: 20030155552
    Abstract: Liquid crystalline media comprising a dielectrically positive component, component A, containing dielectrically positive compounds, comprising one or more compounds of formula I and one or more compounds of formula II 1
    Type: Application
    Filed: October 23, 2002
    Publication date: August 21, 2003
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Elena Kress, Volker Reiffenrath
  • Publication number: 20030098443
    Abstract: The invention relates to a liquid-crystalline medium with positive dielectric anisotropy and high optical anisotropy, characterized in that it contains one or more biphenyl derivatives comprising a terminal alkenyl group, and its use in electrooptical displays and projection systems, in particular reflective displays and displays based on a birefringence effect, such as OCB displays.
    Type: Application
    Filed: June 26, 2002
    Publication date: May 29, 2003
    Applicant: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Volker Reiffenrath
  • 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
  • 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
  • Patent number: 5592091
    Abstract: Nuclear magnetic resonance signals are multiply excited and a plurality of data sets corresponding to the nuclear magnetic resonance signals are obtained and are used for calculating the coefficients of a spherical harmonic function that describes the magnetic field distribution in the examination space. Each data set acquired in this way has a weighting that correlates with the plausibility (reliability) of the data set allocated to it. Taking the respective weighting into consideration, coefficients of the spherical harmonic functions are acquired from the data sets acquired and are used to calculate respective currents that are supplied to the corresponding shim coils.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: January 7, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventor: Atsutaka Manabe
  • Patent number: 5345178
    Abstract: For calculating the magnetic field inhomogeneity, a gradient echo sequence or a spin echo sequence having a non-central 180.degree. radio-frequency pulse is first carried out. The nuclear magnetic resonance signal thus acquired is Fourier-transformed and the phase curve of the nuclear spins in a given region is identified. This is multiply repeated in different projections. The phase curves that are obtained are analyzed with a fit method and the coefficients of the spherical, harmonic functions describing the field distribution are identified therefrom. The current to be supplied to the individual shim coils and an offset current for the gradient coils can thus be calculated.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: September 6, 1994
    Assignees: Siemens Aktiengesellschaft, Siemens-Asahi Medical Technologies Ltd.
    Inventors: Atsutaka Manabe, Shigefumi Kakimoto, Yasushiro Wada