Patents by Inventor Ian Charles Sage

Ian Charles Sage 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).

  • Liquid crystal polymer devices
    Patent number: 5948486
    Abstract: A method for the loading and alignment of liquid crystal polymers in electro-optic and electro-active devices by in-situ polymerization between substrates of liquid crystal monomers. The molecular weight of the resulting liquid crystal polymer is controlled by the addition of a chain transfer reagent, for example, a thiol-containing compound which may be a liquid crystal material.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: September 7, 1999
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Ian Charles Sage, Mark Andrew Verrall, David Coates, Simon Greenfield
  • Thermochromic effect pigment and process for producing the same
    Patent number: 5690857
    Abstract: A thermochromic effect pigment comprising a thermochromic liquid crystal material encapsulated with a polymer and coated with one or more inorganic metal oxides or nearly insoluble metal salts selected from Al.sub.2 O.sub.3, SnO.sub.2, ZrO.sub.2, TiO.sub.2, CaO, SiO.sub.2, ZnO, MgO or BaSO.sub.4. The pigment is stable in solvent-based formulations and can be used as a colorant in the form of an aqueous suspension or as a powder in lacquer compositions, plastic compositions, dyed filter compositions, dyed glass compositions, dyed cosmetic compositions, printing ink compositions, and in hair coloring agents.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: November 25, 1997
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Karl Osterried, Magarete Herbski, Ian Charles Sage