Patents by Inventor Robert Joseph Bouchard

Robert Joseph Bouchard 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: 8529798
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: September 10, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tap Andrew Cheng, David Herbert Roach, John Gerard Lavin
  • Patent number: 8298449
    Abstract: This invention provides a dielectric composition comprising a dielectric which is fireable in air at a temperature in the range of about 450° C. to about 550° C. and a conductive oxide selected from the group consisting of antimony-doped tin oxide, tin-doped indium oxide, a transition metal oxide which has mixed valence states or will form mixed valence states after firing in a nitrogen atmosphere at a temperature in the range of about 450° C. to about 550° C. and normally conducting precious metal oxides such as ruthenium dioxide, wherein the amount of conductive oxide present is from about 0.25 wt % to about 25 wt % of the total weight of dielectric and conductive oxide. This dielectric composition has reduced electrical resistance and is useful in electron field emission devices to eliminate charging of the dielectric in the vicinity of the electron emitter and the effect of static charge induced field emission.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: October 30, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, Kenneth Warren Hang, David Herbert Roach
  • Patent number: 8070906
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: December 6, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roach, John Gerard Lavin
  • Patent number: 8011990
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 6, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roach
  • Publication number: 20110006271
    Abstract: This invention provides a dielectric composition comprising a dielectric which is fireable in air at a temperature in the range of about 450° C. to about 550° C. and a conductive oxide selected from the group consisting of antimony-doped tin oxide, tin-doped indium oxide, a transition metal oxide which has mixed valence states or will form mixed valence states after firing in a nitrogen atmosphere at a temperature in the range of about 450° C. to about 550° C. and normally conducting precious metal oxides such as ruthenium dioxide, wherein the amount of conductive oxide present is from about 0.25 wt % to about 25 wt % of the total weight of dielectric and conductive oxide. This dielectric composition has reduced electrical resistance and is useful in electron field emission devices to eliminate charging of the dielectric in the vicinity of the electron emitter and the effect of static charge induced field emission.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 13, 2011
    Applicant: E.I DU PONT DE NEMOURS AND COMPANY
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roach, Kenneth Warren Hang
  • Patent number: 7763189
    Abstract: This invention provides a dielectric composition comprising a dielectric which is fireable in air at a temperature in the range of about 450° C. to about 550° C. and a conductive oxide selected from the group consisting of antimony-doped tin oxide, tin-doped indium oxide, a transition metal oxide which has mixed valence states or will form mixed valence states after firing in a nitrogen atmosphere at a temperature in the range of about 450° C. to about 550° C. and normally conducting precious metal oxides such as ruthenium dioxide, wherein the amount of conductive oxide present is from about 0.25 wt % to about 25 wt % of the total weight of dielectric and conductive oxide. This dielectric composition has reduced electrical resistance and is useful in electron field emission devices to eliminate charging of the dielectric in the vicinity of the electron emitter and the effect of static charge induced field emission.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: July 27, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roadh, Kenneth Warren Hang
  • Publication number: 20090104834
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 23, 2009
    Inventors: Robert Joseph Bouchard, Lap-Tap Andrew Cheng, John Gerard Lavin, David Herbert Roach
  • Publication number: 20080299864
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Application
    Filed: July 16, 2008
    Publication date: December 4, 2008
    Inventors: Robert Joseph Bouchard, Lap-Tap Andrew Cheng, John Gerard Lavin, David Herbert Roach
  • Patent number: 7449081
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: November 11, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, John Gerard Lavin, David Herbert Roach
  • Patent number: 7276844
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitter wherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: October 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, John Gerald Lavin, David Herbert Roach
  • Publication number: 20040169166
    Abstract: This invention provides a dielectric composition comprising a dielectric which is fireable in air at a temperature in the range of about 450° C. to about 550° C. and a conductive oxide selected from the group consisting of antimony-doped tin oxide, tin-doped indium oxide, a transition metal oxide which has mixed valence states or will form mixed valence states after firing in a nitrogen atmosphere at a temperature in the range of about 450° C. to about 550° C. and normally conducting precious metal oxides such as ruthenium dioxide, wherein the amount of conductive oxide present is from about 0.25 wt % to about 25 wt % of the total weight of dielectric and conductive oxide. This dielectric composition has reduced electrical resistance and is useful in electron field emission devices to eliminate charging of the dielectric in the vicinity of the electron emitter and the effect of static charge induced field emission.
    Type: Application
    Filed: April 22, 2004
    Publication date: September 2, 2004
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, David Herbert Roadh, Kenneth Warren Hang
  • Patent number: 6565403
    Abstract: Patterned ion-bombarded graphite electron emitters are disclosed as well as processes for producing them. The electron emitters are produced by forming a layer of composite of graphite particles and glass on a substrate then bombarding the composite with an ion beam. The electron emitters are useful in field emitter cathode assemblies which are fabricated into flat panel displays.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: May 20, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Daniel Irwin Amey, Jr., Robert Joseph Bouchard, Syed Ismat Ullah Shah
  • Patent number: 6537122
    Abstract: Patterned graphite electron emitters are disclosed. These field emitters find particular usefulness in field emitter cathodes and display panels. These graphite field emitters can be formed by screen printing a paste comprised of graphite and electrically insulating material (glass frit) in the desired patterned paste and bombarding the fire product with an ion beam.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: March 25, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Daniel Irwin Amey, Jr., Robert Joseph Bouchard, Syed Ismat Ullah Shah
  • Patent number: 6514112
    Abstract: Wire-coated graphite electron emitters are disclosed. These field emitters find particular usefulness in field emitter cathodes, display panels and lighting devices. These graphite field emitters can be formed by coating a paste comprised of graphite and glass frit onto the wire, firing the paste and bombarding the fired product with an ion beam.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: February 4, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Daniel Irwin Amey, Jr., Robert Joseph Bouchard, Syed Ismat Ullah Shah
  • Patent number: 6409567
    Abstract: Patterned ion-bombarded carbon electron emitters and the processes for producing them. The electron emitters are produced by forming a layer of composite of carbon particles and glass on a substrate then bombarding the composite with an ion beam. The electron emitters are useful in field emitter cathode assemblies which are fabricated into flat panel displays.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: June 25, 2002
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Daniel Irwin Amey, Jr., Robert Joseph Bouchard, Syed Ismat Ullah Shah, John Gerard Lavin
  • Publication number: 20020074932
    Abstract: This invention provides a process for improving the field emission of an electron field emitter comprised of an acicular emitting substance such as acicular carbon, an acicular semiconductor, an acicular metal or a mixture thereof, comprising applying a force to the surface of the electron field emitterwherein the force results in the removal of a portion of the electron field emitter thereby forming a new surface of the electron field emitter.
    Type: Application
    Filed: June 15, 2001
    Publication date: June 20, 2002
    Inventors: Robert Joseph Bouchard, Lap-Tak Andrew Cheng, John Gerard Lavin, David Herbert Roach
  • Patent number: 4063341
    Abstract: Multilayer capacitors of good electrical properties can be made by firing, in air at low temperatures, certain modified lead titanate dielectric compositions. The dielectric compositions have the formula(Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.a (PbMg.sub.0.5 W.sub.0.5 O.sub.3).sub.bwhereinx is 0-0.10,a is 0.35-0.5,b is 0.5-0.65, anda plus b equals 1.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: December 20, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lothar Heinrich Brixner, Michael John Popowich
  • Patent number: 4048546
    Abstract: Finely divided dielectric powder compositions having the formula (Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.a (PbMg.sub.0.5 W.sub.0.5 O.sub.3).sub.b whereinx is 0-0.10,a is 0.35-0.5,b is 0.5-0.65, anda plus b equals one,Said compositions having been calcined in air at 750.degree.-900.degree. C. for at least 5 minutes. These powder compositions may be formed into the desired shape and sintered in air at reduced temperatures to produce dielectric bodies of improved properties.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: September 13, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Lothar Heinrich Brixner
  • Patent number: 3960778
    Abstract: Powder compositions comprising finely divided solid solutions of certain pyrochlore-related oxides and glass powder, and thermistors thereof, useful in the electronics art.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: June 1, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert Joseph Bouchard, Donald Burl Rogers