Patents by Inventor John Christopher Adams

John Christopher Adams 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).

  • STENCIL MASTER
    Publication number: 20080280059
    Abstract: A heat-sensitive stencil master comprises a heat-sensitive polymeric film having a thickness of less than 10 ?m and, coated thereon, a solid resinous foam comprising a foaming agent. The stencil master is of particular use in a digital duplicating printing process.
    Type: Application
    Filed: October 31, 2007
    Publication date: November 13, 2008
    Applicant: G R Advanced Materials Ltd.
    Inventors: JOHN CHRISTOPHER ADAMS, ANDREW MCVITIE
  • Emulsion ink
    Patent number: 7396396
    Abstract: A water-in-oil emulsion ink comprises a water phase and an oil phase, wherein the water phase comprises a carbon black pigment having a pH of less than 8 dispersed therein by a water-soluble resin, and wherein the water phase also comprises a pH-adjusting agent to achieve a pH value for the water phase of 8 or greater. The ink maintains stable rheology on ageing, and provides a stable and consistent ink detection signal even after periods of non-use.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: July 8, 2008
    Assignees: GR Advanced Materials Ltd., Tohoku Ricoh Co., Ltd.
    Inventor: John Christopher Adams
  • Emulsion ink
    Patent number: 7300507
    Abstract: A water-in-oil emulsion ink comprises a water phase and an oil phase, wherein the water phase comprises a carbon black pigment having a pH of less than 6. The emulsion ink maintains stable rheology on ageing.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: November 27, 2007
    Assignees: GR Advanced Materials Ltd., Tohoku Ricoh Co., Ltd
    Inventors: John Christopher Adams, John Hamilton
  • Stencil master
    Publication number: 20040126563
    Abstract: A heat-sensitive stencil master comprises a heat-sensitive polymeric film having a thickness of less than 10 &mgr;m and, coated thereon, a solid resinous foam comprising a foaming agent. The stencil master is of particular use in a digital duplicating printing process.
    Type: Application
    Filed: November 18, 2003
    Publication date: July 1, 2004
    Applicant: G R Advanced Materials Ltd.
    Inventors: John Christopher Adams, Andrew McVitie
  • Emulsion inks
    Patent number: 6527842
    Abstract: An emulsion ink comprises a continuous oil phase, two or more dispersed liquid phases, one of which is a dispersed oil phase, and a solid material dispersed in the dispersed oil phase. The emulsion ink is suitable for use on a stencil or digital duplicator, and has improved rheological properties.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: March 4, 2003
    Assignee: G R Advanced Materials Ltd.
    Inventors: John Christopher Adams, John Hamilton
  • Printing process for applying a composition using a stencil or digital duplicator
    Patent number: 6289812
    Abstract: A printing process including applying a composition to a substrate using a digital or stencil duplicator, the composition including a dispersion of particles of a thermoplastic or thermosetting polymer dispersed in an involatile organic liquid, where the size of the particles in the composition is less than 35 &mgr;m.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: September 18, 2001
    Assignee: G. R. Advanced Materials Ltd.
    Inventors: John Christopher Adams, John Hamilton
  • Emulsion ink
    Patent number: 6066199
    Abstract: Ink comprising a water-in-oil emulsion consisting of an aqueous phase and an oil phase and a coloring agent, wherein the oil phase comprises at least about 25% w/w of a silicone oil and an emulsifier.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: May 23, 2000
    Assignee: G R Advanced Materials Ltd.
    Inventors: John Christopher Adams, Peter James Stotereau