Patents by Inventor Ryan Michael Heath

Ryan Michael Heath 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: 7009667
    Abstract: In a liquid crystal reflecting device comprising a cell (1) formed by two cell walls (3, 4) spaced apart by spacers (5) to contain a layer (2) of a liquid crystal material, electrode structures (6, 7) on the inner faces of the walls, and a surface alignment on one or both walls to align the liquid crystal material, a diffuse specular reflector is provided by a mirror base layer (21) formed by at least two different materials that are at least partly immiscible relative to one another forming a rough surface onto which a reflective layer (22) is coated. The mirror base layer (21) is formed by at least two different polymer and/or monomer materials that are at least partly immiscible relative to one another. The reflector layer (22) may be a single sheet, formed into a plurality of separate reflector elements, or patterned into electrodes.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: March 7, 2006
    Assignee: Qinetiq Limited
    Inventors: Robert William Bannister, Ryan Michael Heath, Rachel Patricia Tuffin
  • Publication number: 20040141123
    Abstract: In a liquid crystal reflecting device comprising a cell (1) formed by two cell walls (3, 4) spaced apart by spacers (5) to contain a layer (2) of a liquid crystal material, electrode structures (6, 7) on the inner faces of the walls, and a surface alignment on one or both walls to align the liquid crystal material, a diffuse specular reflector is provided by a mirror base layer (21) formed by at least two different materials that are at least partly immiscible relative to one another forming a rough surface onto which a reflective layer (22) is coated. The mirror base layer (21) is formed by at least two different polymer and/or monomer materials that are at least partly immiscible relative to one another. The reflector layer (22) may be a single sheet, formed into a plurality of separate reflector elements, or patterned into electrodes.
    Type: Application
    Filed: October 29, 2003
    Publication date: July 22, 2004
    Inventors: Robert William Banister, Ryan Michael Heath, Rachel Patricia Tuffin
  • Patent number: 6312546
    Abstract: In a method of manufacturing a ferroelectric liquid crystal device, the following steps are applied in order to effect spacing apart of two substrates and by spacers. The spacers are applied to a surface of a transfer member, and the transfer member is then pressed onto a receiving surface of one of the substrates. The transfer member is then removed so as to transfer the spacers from the transfer member to the receiving surface at the required positions. Finally the other substrate is pressed onto the spacers on the receiving surface so as to form an assembly of the two substrates spaced apart by the spacers. Such a sequence of steps enables the spacers to be placed in the required positions in a particularly straightforward manner, whilst minimising the number of fabrication steps used in the process.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: November 6, 2001
    Assignees: Sharp Kabushiki Kaisha, The secretary of State of Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Robert William Bannister, Ryan Michael Heath