Patents Examined by Jennifer R. Sadula
  • Patent number: 7041234
    Abstract: A method for producing platform molecules comprising: forming a mixture comprising first and second phenylene rings comprising halogenated carboxylic groups, and a third phenylene ring comprising a desired substituent and a first functionality at a para-position to a second funcitonality; and exposing the mixture to conditions effective to react the first halogenated carboxylic group with the first functionality to produce a first ester bond, and the second halogenated carboxylic group with the second functionality to produce a second ester bond; producing platform molecules comprising terminal groups comprising the first functional group at a position para to first ester bond and the second functional group at a position para to the second ester bond.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: May 9, 2006
    Assignee: Southwest Research Institute
    Inventors: Stephen T. Wellinghoff, Douglas P. Hanson
  • Patent number: 7041233
    Abstract: A method for generating a 3-dimensional effect involves providing at least one first image layer of a chiral liquid crystal material, and at least one second image layer of a chiral liquid crystal material, wherein one of the first and second image layers reflects right-handed circularly polarised light and the other reflects left-handed circularly polarised light, is suitable creating a 3-dimensional image that can be used for decorative and security applications.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: May 9, 2006
    Assignee: Merck Patent GmbH
    Inventors: Matthias Kuntz, Rodney Riddle, John Patrick, Robert Hammond-Smith
  • Patent number: 6979413
    Abstract: Optical recording material which is capable of recording and reading an information signal by utilizing a change in the double refraction caused by a change in the molecular orientation of a side-chain type polymer liquid crystal which has an electrocyclic-reaction-type photochromic compound (or a residue thereof), or a side-chain polymer liquid crystal having in a polymer chain thereof a monomeric unit to which the photochromic compound is bonded.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: December 27, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuriko Kaida, Masahiro Irie
  • Patent number: 6969578
    Abstract: An optical recording material which when exposed to actinic radiation produces a change in optical properties in the exposed regions, thereby providing a pattern of intelligence for storing and retrieving information, the recording material having: a) a polymer containing a covalently bound reactant moiety which is capable of undergoing a chemical transformation upon a one electron oxidation, thus causing the change in optical properties in the exposed regions; and b) a sensitizer capable of absorbing actinic radiation to cause an initial one electron oxidation of the reactant.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: November 29, 2005
    Assignee: Eastman Kodak Company
    Inventors: Douglas R. Robello, Samir Y. Farid, Joseph P. Dinnocenzo, Jason G. Gillmore
  • Patent number: 6953611
    Abstract: An anisotropic polymer film comprising a polymeriZed chiral liquid crystal material with helically twisted structure and having areas with different helical twist sense is useful for decorative or security applications.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: October 11, 2005
    Assignee: Merck Patent GmbH
    Inventors: Robert Hammond-Smith, John Patrick, Alison Linda May
  • Patent number: 6949281
    Abstract: An object of the present invention is to provide a varnish composition which can achieve totally and with good balance the improvement in various properties including electrical properties such as residual charge, a voltage holding ratio and image sticking, a pre-tilt angle, coating property, alignment property, and so on, which are desired for a liquid crystal aligning film formed. The varnish composition comprises polymer ingredients containing polyamic acid B represented by formula (1), polyamic acid A represented by formula (2) having a side chain of not less than 3 carbon atoms and N-substituted polyamide represented by formula (3), and a solvent for dissolving the polymer ingredients. The varnish composition contains 0.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: September 27, 2005
    Assignee: Chisso Corporation
    Inventors: Satoshi Tanioka, Kumiko Fukui, Shizuo Murata, Hiroshi Ono, Itsuo Shimizu
  • Patent number: 6946169
    Abstract: The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: September 20, 2005
    Assignee: Chisso Corporation
    Inventors: Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito
  • Patent number: 6939478
    Abstract: A A compound having formula (2) wherein A2 is an electron acceptor moiety; C2 is a conjugated bridging moiety; D2 is an electron donor moiety; S2 is a hydrocarbon, a heterocyclic moiety, or a hetero-acyclic moiety; a? is an integer; Z2 is a polymerizable moiety; and e? is the degree of polymerization.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: September 6, 2005
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, David Rider, Peter G. Odell
  • Patent number: 6939479
    Abstract: Described herein are compounds of formula I wherein M1, M2 and M3 have the meanings recited in the disclosure, liquid crystalline mixtures and polymers containing them, and the use of the compounds of formula I, the liquid crystalline mixtures and the polymers containing them in optical and electrooptical devices like liquid crystal displays or projection systems, patterned films and optical elements like polarizers, retardation films, compensators, color filters, holographic elements or polarization beam splitters, for photoswitching, in anisotropic membranes for the permeation of gases or fluids, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic or pharmaceutical compositions, UV absorbers and sunscreens, diagnostics or liquid crystal pigments, for decorative and security applications, in nonlinear optics, optical information storage or as dopants.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: September 6, 2005
    Assignee: Merck Patent GmbH
    Inventors: Louise Diane Farrand, Christopher Worrall, Owain Llyr Parri, Ian Victor Edward Hassall, Julian Frederick Samuel Vaughan-Spickers
  • Patent number: 6936187
    Abstract: Functionalized cubic gel precursors, functionalized cubic liquid crystalline gels, dispersions of functionalized cubic gel particles and functionalized cubic gel particles are disclosed. Methods for preparing and using the precursors, gels, dispersions, and particles are also disclosed. The precursors, gels, dispersions, and particles are used to deliver active ingredients to substrates.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: August 30, 2005
    Inventors: Matthew Lawrence Lynch, Patrick Thomas Spicer
  • Patent number: 6936186
    Abstract: A mesomorphic compound having an ionic conductivity is used as an electrolyte for a secondary battery, etc. The mesomorphic compound has a partial structure which includes (a) a mesomorphic mesogen group and (b) two divalent groups. Each of the two divalent groups is directly connected to the mesogen group, and each of the two divalent groups is represented by the following formula: (OCH2CH2)x or (OCH2CH(CH3))y in which x and y are respectively an integer of 3 to 25. The mesomorphic compound may be a polymeric mesomorphic compound.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: August 30, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Shinichi Nakamura
  • Patent number: 6921624
    Abstract: Disclosed is an optical recording medium comprising a recording layer. The recording layer contains: a charge generation material generating an electron and a hole by light irradiation; a charge transport material transporting one of the electron and the hole; a charge trap which traps the transported one of the electron and the hole to separate the electron and the hole; and a non-linear optical material which changes optical properties of the recording layer in accordance with electric field formed by the electron and the hole being separated from each other. The non-linear optical material has an asymmetrical carbon atom and a cyclic group. Or, it is a cyclic-group-containing constituent having: an inversion symmetric pi-electron system; at least one of an electron donating group and an electron accepting group which are bonded to the inversion symmetric ?-electron system; and an asymmetrical carbon atom.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: July 26, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akiko Hirao, Kazuki Matsumoto, Takayuki Tsukamoto, Hideyuki Nishizawa
  • Patent number: 6913708
    Abstract: The invention provides methods of forming a cholesteric liquid crystal layer that include forming a cholesteric liquid crystal composition, depositing the cholesteric liquid crystal composition onto a substrate, and initially drying the cholesteric liquid crystal composition at a temperature at or below about 90° C. so that the cholesteric liquid crystal composition has at least 80% solids remaining. The invention also provides methods of forming a cholesteric liquid crystal layer that include forming a cholesteric liquid crystal composition, depositing the cholesteric liquid crystal composition onto a substrate, and initially drying the cholesteric liquid crystal composition at a temperature at or below about 90° C., wherein the drying is accomplished using a technique that provides little or no airflow. The invention further provides a cholesteric liquid crystal composition that includes at least one cholesteric liquid crystal precursor and 1,3-dioxolane.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: July 5, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Steven D. Solomonson, Marc D. Radcliffe, Richard J. Pokorny
  • Patent number: 6913710
    Abstract: The invention relates to new reactive mesogenic benzodithiophene derivatives, their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices like for example liquid crystal displays, optical films, organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the reactive mesogenic benzodithiophenes.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: July 5, 2005
    Assignee: Merck Patent GmbH
    Inventors: Louise Farrand, Martin Heeney, Steven Tierney, Mark Giles, Marcus Thompson, Maxim Shkunov, David Sparrowe, Iain McCulloch
  • Patent number: 6905633
    Abstract: A compound having formula (3) wherein: D3 is an electron donor moiety; C3 is a conjugated bridging moiety; A3 is an electron acceptor moiety; S3 is a hydrocarbon, a heterocyclic moiety, or a hetero-acyclic moiety; and b? is an integer.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: June 14, 2005
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 6899823
    Abstract: A compound or a polymer thereof promises an advantageous use for an ink-jet ink or a polymer dispersion liquid crystal display.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: May 31, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Sato, Jun Kamatani
  • Patent number: 6899824
    Abstract: A process for printing or coating a substrate with a liquid-crystalline composition and at least one non-liquid-crystalline print or coating as a multilayer and a substrate produced by this process is described. The liquid-crystalline composition contains at least one compound having two polymerizable groups and at least one compound having only one polymerizable group, and optional further additives. The non-liquid-crystalline print or coating contains one or more IR- or UV-absorbent or fluorescent dye or pigment. The process and the printed substrate are useful in producing counterfeiting-proof marking of articles.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: May 31, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Meyer, Hiroki Ishida, Peter Schuhmacher, Horst Neumann
  • Patent number: 6893585
    Abstract: The present invention provides a liquid crystal composition including a liquid crystal compound containing at least one polymerizable group, two or more kinds of photoreactive chiral compounds that undergo isomerization when respectively irradiated with light beams having mutually different wavelengths and exhibit mutually different HTPs after isomerization, and a polymerization initiator; a selectively reflective film produced using the liquid crystal compound; and a method for producing the selectively reflective film. Instead of the two or more kinds of photoreactive chiral compounds, a single photoreactive chiral compound that undergoes reversible isomerization when irradiated with either of two light beams having mutually different wavelengths may be used.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: May 17, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mitsuyoshi Ichihashi
  • Patent number: 6887534
    Abstract: A liquid crystal aligning agent which can provide liquid crystal aligning capability through exposure to polarized radiation without rubbing and which is used to form a liquid crystal alignment film, a method of forming a liquid crystal alignment film, and a liquid crystal display element having this liquid crystal alignment film. An alignment film is formed from a liquid crystal aligning agent containing a polymer having a polyamic acid ester structure with a conjugated enone structure in the side chain and applying radiation to it from a predetermined direction. Thereby, a liquid crystal display element having high thermal stability in the alignment of liquid crystals and excellent display characteristics can be manufactured.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: May 3, 2005
    Assignee: JSR Corporation
    Inventors: Shoichi Nakata, Masayuki Kimura
  • Patent number: 6884477
    Abstract: An electroluminescence device contains a carrier transporting layer comprising a liquid crystal compound represented by R—X—A—B—X?—R???(I), wherein A and B denote a naphthalene-2,6-diyl skeleton optionally substituted with one or two of F, Cl, Br, CH3 and CF3, at least one of A and B comprising a naphthalene-2,6-diyl skeleton having one to four CH groups replaced with N; X and X? denote —O—, —S—, —OOC— or —COO—; and one of R and R? denotes H, F, Cl, Br, CF3 or a linear or branched alkyl group having 1-20 carbon atoms, and the other one of R and R? denotes a linear or branched alkyl group having 3-20 carbon atoms, said alkyl groups being independently capable of including one methylene group which can be replaced with —O—, —S—, —CH?CH— or —C?C— so long as heteroatoms are not adjacent to each other.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: April 26, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Takiguchi, Shinjiro Okada, Akira Tsuboyama, Takashi Moriyama