Patents by Inventor Ian Victor Edward Hassall

Ian Victor Edward Hassall 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: 7435357
    Abstract: The invention relates to a polymerised liquid crystal (LC) film comprising at least one photoisomerisable compound and having a pattern of regions with different retardation and/or different orientation of the LC material, to methods of preparing such a film, and to its use as alignment layer, optical retardation film or optical waveguide in liquid crystal displays or other optical or electrooptical components or devices, or for decorative or security applications.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: October 14, 2008
    Assignee: Merck Patent GmbH
    Inventors: Richard Harding, Shirley Ann Marden, Ian Victor Edward Hassall, Janice McCreary, Karl Skjonnemand
  • Patent number: 7294369
    Abstract: The invention relates to new polymerisable mesogenic or liquid crystalline compounds comprising a laterally substituted cinnamate group, to polymerisable mesogenic or liquid crystalline mixtures and anisotropic polymers prepared thereof, and to the use of the new compounds and the mixtures and polymers prepared thereof in optical and electrooptical devices, adhesives, synthetic resins with anisotropic mechanical properties, cosmetics, diagnostics, liquid crystal pigments, decorative and security applications, nonlinear optics, optical information storage, electronic devices like organic field effect transistors (FET or OFET), electroluminescent devices, or as chiral dopants.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: November 13, 2007
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Richard Harding, Ian Victor Edward Hassall, Shirley Ann Marden, Darren Brown
  • Patent number: 7122227
    Abstract: The invention relates to chiral photoisomerizable compounds of formula (I) wherein X1, X2, X3, X4, X5 and X6 have the meanings given in claim 1, to liquid crystalline mixtures and polymers containing them, and to the use of chiral photoisomerizable compounds, liquid crystalline mixtures and polymers containing them in optical and electrooptical devices like liquid crystal displays or projection systems, in optical elements like polarizers, retardation films, compensators, color filters or holographic elements, in liquid crystal pigments and colored films or coatings for decorative or security applications, cosmetic and pharmaceutical compositions, in nonlinear optics and optical information storage.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: October 17, 2006
    Assignee: Merck Patent Gesellschaft
    Inventors: Julian Vaughn-Spickers, Simon Greenfield, Ian Victor Edward Hassall, Christopher Dunn, Richard Harding, Tony Jenkins, Alison May
  • Patent number: 7029728
    Abstract: The invention relates to a polymerizable liquid crystal material containing at least one polymerizable surface-active compound, its use for the preparation of anisotropic polymer films, and the use of the liquid crystal material and the polymer films in optical and electrooptical devices, and for decorative and security applications.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: April 18, 2006
    Assignee: Merck Patent Gesellschaft mit beschraenkter Haftung
    Inventors: Christopher J. Dunn, Simon Greenfield, Richard Harding, Ian Victor Edward Hassall, Alison Linda May, Julian Frederick Samuel Vaughan-Spickers
  • 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
  • Publication number: 20040026660
    Abstract: The invention relates to chiral photoisomerizable compounds of formula (I) wherein X1, X2, X3, X4, X5 and X6 have the meanings given in claim 1, to liquid crystalline mixtures and polymers containing them, and to the use of chiral photoisomerizable compounds, liquid crystalline mixtures and polymers containing them in optical and electrooptical devices like liquid crystal displays or projection systems, in optical elements like polarizers, retardation films, compensators, colour filters or holographic elements, in liquid crystal pigments and coloured films or coatings for decorative or security applications, cosmetic and pharmaceutical compositions, in nonlinear optics and optical information storage.
    Type: Application
    Filed: May 19, 2003
    Publication date: February 12, 2004
    Inventors: Julian Vaughan-Spickers, Simon Greenfield, Ian Victor Edward Hassall, Christopher J. Dunn, Richard Harding, Tony Jenkins, Alison Linda May
  • Publication number: 20030085377
    Abstract: The invention relates to a polymerizable liquid crystal material containing at least one polymerizable surface-active compound, its use for the preparation of anisotropic polymer films, and the use of the liquid crystal material and the polymer films in optical and electrooptical devices, and for decorative and security applications.
    Type: Application
    Filed: May 1, 2002
    Publication date: May 8, 2003
    Applicant: MERCK PAPTENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Christopher J. Dunn, Simon Greenfield, Richard Harding, Ian Victor Edward Hassall, Alison Linda May, Julian Frederick Samuel Vaughan-Spickers
  • Patent number: 6491990
    Abstract: The invention relates to monoreactive mesogenic compounds of formula I wherein P, Sp, X, n, Y1, Y2, r1, r2, r3, Z1 and Z2 are defined herein.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: December 10, 2002
    Assignee: Merck Patent Gesellschaft mit beschraenkter Haftung
    Inventors: Owain Llyr Parri, Ian Victor Edward Hassall, Tara Louise Cutler