Patents by Inventor Mikhael Pivnenko

Mikhael Pivnenko 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 formulations and structures for smectic A optical devices
    Patent number: 8956548
    Abstract: The present, invention relates to liquid crystal compositions having a smectic A structure for use in an optical device in which the composition is sandwiched between a pair of electrodes (12-15). In essence the composition includes a siloxane oligomer (component (a)) which may be seen to construct a layered SmA system of particular spacing and “strength”. Within this structure a low molar mass nematic mesogen (component (c)) is provided that may be considered to be that of a “plasticiser” which moderates the layer “strength”, while simultaneously providing tuneability to the properties of the composition, e.g. its refractive index or dielectric anisotropy. The addition of a side chain liquid crystal polysiloxane (component (d)) allows such systems to be further moderated since they can be considered as binding together the la>¾rs, both within a given layer and between layers.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: February 17, 2015
    Assignees: Dow Corning Corporation, Cambridge Enterprise Limited
    Inventors: Terry Victor Clapp, William Alden Crossland, Anthony Bernard Davey, Martin Grasmann, Jonathan Paul Hannington, Russell Keith King, Mikhael Pivnenko, Steven Robson, Huan Xu
  • Liquid Crystal Formulations And Structures For Smectic A Optical Devices
    Publication number: 20130155340
    Abstract: The present, invention relates to liquid crystal compositions having a smectic A structure for use in an optical device in which the composition is sandwiched between a pair of electrodes (12-15). In essence the composition includes a siloxane oligomer (component (a)) which may be seen to construct a layered SmA system of particular spacing and “strength”. Within this structure a low molar mass nematic mesogen (component (c)) is provided that may be considered to be that of a “plasticiser” which moderates the layer “strength”, while simultaneously providing tuneability to the properties of the composition, e.g. its refractive index or dielectric anisotropy. The addition of a side chain liquid crystal polysiloxane (component (d)) allows such systems to be further moderated since they can be considered as binding together the la>¾rs, both within a given layer and between layers.
    Type: Application
    Filed: March 15, 2011
    Publication date: June 20, 2013
    Inventors: Terry Victor Clapp, William Alden Crossland, Anthony Bernard Davey, Martin Grasmann, Jonathan Paul Hannington, Russell Keith King, Mikhael Pivnenko, Steven Robson, Huan Xu