Patents by Inventor Jonathon P. Hannington

Jonathon P. Hannington 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 siloxanes
    Patent number: 5547604
    Abstract: Siloxane compounds having a smectic liquid crystal phase and the general formula ##STR1## wherein each R=alkyl, alkenyl or aryl, Q represents a monovalent group, for example alkyl, --(CH.sub.2).sub.n OM', a chiral organic group, a dye group, a non-linear optic group or the group --(CH.sub.2).sub.n L, in which L represents a siloxane group, M and M' each represent ##STR2## wherein A is carboxyl, T is CN, F or Cl and p=0 or 1, provided that when T is F or Cl x has a value of at least 2.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: August 20, 1996
    Assignee: Dow Corning Limited
    Inventors: Harry J. Coles, Jonathon P. Hannington, David R. Thomas
  • Liquid crystal device
    Patent number: 5455697
    Abstract: A liquid crystal device wherein the liquid crystal material exhibits a smectic phase and cromprises at least one siloxane compound having the general formula ##STR1## in which R=alkyl, alkenyl or aryl, Q represents a monovalent group, for example alkyl --(CH.sub.2).sub.n OM', a chiral organic group, a dye group, a non-linear optic group or the group --(CH.sub.2).sub.n L in which L represents a siloxane group, M and M' each represent ##STR2## wherein A is carboxyl, T is CN, F or Cl and p=0 or 1, provided that when T is F or Cl x has a value of at least 2.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: October 3, 1995
    Assignee: Dow Corning Limited
    Inventors: Harry J. Coles, Jonathon P. Hannington, David R. Thomas