Patents by Inventor Christopher J. Roach

Christopher J. Roach 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).

  • Publication number: 20100136239
    Abstract: The invention is directed to a process for making screen-printable getter composition comprising: (a) glass frit; and (b) pre-hydrated desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure. The desiccant material is pre-hydrated to reach its saturation level of moisture absorption. The process of pre-hydration can be done by exposing the desiccant in a normal temperature/humidity environment of for example, 25° C. and 50-60% RH. For 24 to 48 hours or up to the time when weight gain (due to moisture absorption) stops increasing.
    Type: Application
    Filed: January 29, 2010
    Publication date: June 3, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Carl B. Wang, Christopher J. Roach, Fong-Pei Chang
  • Publication number: 20090263587
    Abstract: The invention is directed to a process for making screen-printable getter composition comprising: (a) glass frit; and (b) pre-hydrated desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure. The desiccant material is pre-hydrated to reach its saturation level of moisture absorption. The process of pre-hydration can be done by exposing the desiccant in a normal temperature/humidity environment of for example, 25° C. and 50-60% RH. For 24 to 48 hours or up to the time when weight gain (due to moisture absorption) stops increasing.
    Type: Application
    Filed: June 23, 2009
    Publication date: October 22, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CARL B. WANG, CHRISTOPHER J. ROACH, FONG-PEI CHANG
  • Patent number: 7201814
    Abstract: This invention is directed to a process for the fabrication of features on a display panel utilizing fibers or ribbons comprising organic polymer and inorganic material, the inorganic material containing phosphoe, conductrice metals or dielectric particles.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: April 10, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Che-Hsiung Hsu, Christopher J. Roach
  • Publication number: 20040050476
    Abstract: This invention is directed to a process for the fabrication of features on a display panel utilizing fibers or ribbons comprising organic polymer and inorganic material, the inorganic material containing phosphoe, conductrice metals or dielectric particles.
    Type: Application
    Filed: July 9, 2003
    Publication date: March 18, 2004
    Inventors: Che-Hsiung Hsu, Christopher J. Roach