Patents by Inventor William D. Ramsden

William D. Ramsden 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: 20120148436
    Abstract: Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
    Type: Application
    Filed: November 4, 2011
    Publication date: June 14, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Publication number: 20120148861
    Abstract: Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
    Type: Application
    Filed: November 8, 2011
    Publication date: June 14, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Publication number: 20120148442
    Abstract: Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies and reduced nitric oxide co-production relative to previous methods. Such materials are useful in electronic applications.
    Type: Application
    Filed: November 4, 2011
    Publication date: June 14, 2012
    Inventors: David R. Whitcomb, William D. Ramsden
  • Publication number: 20120128529
    Abstract: Nanowire preparation methods, compositions, and articles are disclosed. Such nanowires may be thicker than other nanowires and may be useful in devices requiring high electrical current densities.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 24, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Publication number: 20120126181
    Abstract: Preparation methods, compositions, and articles useful for electronic and optical applications. Methods for reducing metal ions to metals in the presence of IUPAC Group 14 elements in their +2 oxidation state, the metal products, and articles comprising the metal products. Compositions comprising metal nanowires and ions of IUPAC Group 14 elements, the metal nanowires, and articles comprising the metal nanowires.
    Type: Application
    Filed: May 19, 2011
    Publication date: May 24, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Publication number: 20120063948
    Abstract: Preparation methods, compositions, and articles are disclosed and claimed. Methods for reducing metal ions to metals, the metal products, and articles comprising the metal products are claimed. The claimed inventions are useful for electronic and optical applications.
    Type: Application
    Filed: August 8, 2011
    Publication date: March 15, 2012
    Inventors: William D. Ramsden, Doreen C. Lynch, Junping Zhang
  • Patent number: 7468241
    Abstract: Use of certain compounds in black-and-white photothermographic materials improves processing latitude particularly under conditions of high humidity.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: December 23, 2008
    Assignee: Carestream Health, Inc.
    Inventors: Doreen C. Lynch, William D. Ramsden, Sharon M. Simpson, Chaofeng Zou
  • Patent number: 7452661
    Abstract: Incorporation of certain compounds into photothermographic materials provides materials with reduced initial image Dmin and improved Raw Stock Keeping film stability without unacceptable loss in sensitometric properties. These compounds include certain e-i) zinc salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, e-ii) non-encapsulated alkali metal salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, and e-iii) fluorinated C2-C6 carboxylic acids.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: November 18, 2008
    Assignee: Carestream Health, Inc.
    Inventors: Kui Chen-Ho, William D. Ramsden
  • Publication number: 20080206688
    Abstract: Incorporation of certain compounds into photothermographic materials provides materials with reduced initial image Dmin and improved Raw Stock Keeping film stability without unacceptable loss in sensitometric properties. These compounds include certain e-i) zinc salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, e-ii) non-encapsulated alkali metal salts of an aryl sulfonic acid or of a fluorinated C2-C6 carboxylic acid, and e-iii) fluorinated C2-C6 carboxylic acids.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 28, 2008
    Inventors: Kui Chen-Ho, William D. Ramsden
  • Publication number: 20080145801
    Abstract: Use of a combination of a trisphenol reducing agent (developer) and a substituted olefinic co-developer in photothermographic materials reduces their sensitivity to high humidity and improves processing latitude.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 19, 2008
    Inventors: Chaofeng Zou, Fong Vang, Doreen C. Lynch, William D. Ramsden, Sharon M. Simpson, Kumars Sakizadeh
  • Publication number: 20080145800
    Abstract: Use of a combination of a trisphenol reducing agent (developer) and a substituted olefinic co-developer in photothermographic materials provides a number of improvements including a reduction of sensitivity to high humidity and improved processing latitude.
    Type: Application
    Filed: April 16, 2007
    Publication date: June 19, 2008
    Inventors: Chaofeng Zou, Fong Vang, Doreen C. Lynch, William D. Ramsden, Sharon M. Simpson, Kumars Sakizadeh
  • Publication number: 20080057450
    Abstract: Incorporating a combination of phenolic reducing agents provides thermally developable materials with improved silver efficiency and hot-dark print stability without loss in other sensitometric properties. Both photothermographic and thermographic materials are provided, and particularly photothermographic materials having lower silver coverage.
    Type: Application
    Filed: August 21, 2006
    Publication date: March 6, 2008
    Inventors: Stacy M. Ulrich, Doreen C. Lynch, Takuzo Ishida, Chaofeng Zou, Paul G. Skoug, William D. Ramsden
  • Patent number: 7241561
    Abstract: Bis phenol reducing agents incorporating bicyclic and tricyclic substituents ortho to the hydroxyl groups on the aromatic rings have been found to provide photothermographic materials with improved silver efficiency and stability without significant loss in sensitometric properties.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 10, 2007
    Assignee: Carestream Health, Inc.
    Inventors: Doreen C. Lynch, William D. Ramsden, Andrea L. Hansen, Stacy M. Ulrich
  • Patent number: 7169543
    Abstract: Photothermographic materials contain one or more blocked aliphatic thiol compounds in an amount of at least 1 mg/m2 as stabilizers. These compounds have a calculated octanol-water partition coefficient (c log P value) of 2.0 or greater, and an N value equal to or greater than 6.5.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: William D. Ramsden, James B. Philip, Jr., Doreen C. Lynch, Kui Chen-Ho, Stacy M. Ulrich, Kumars Sakizadeh, Jeffrey W. Leon, George J. Burgmaier
  • Patent number: 7169544
    Abstract: Black-and-white, dry processable thermally developable materials have increased stability after imaging with the incorporation of at least 0.0001 mol/m2 of a thermal solvent having one or more >N—C(?O)— groups. Such thermally developable materials include both thermographic and photothermographic materials.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: Kui Chen-Ho, William D. Ramsden, Chaofeng Zou, Doreen C. Lynch, James B. Philip, Jr., Karissa L. Eckert, George J. Burgmaier
  • Patent number: 7132228
    Abstract: Solid particle dispersions of certain ascorbic acid esters are prepared in the presence of at least 0.5 and less than 50 weight % of a particle growth modifier based on the weight of the ascorbic acid ester. The particle growth modifier is an alkyl carboxylic acid having from 8 to 22 carbon atoms, an alkyl ester of glycerol wherein the alkyl moiety has from 8 to 22 carbon atoms, or a stereoisomer of the ascorbic acid ester. The resulting aqueous solid particle dispersion can be used in various thermally developable materials including thermographic and photothermographic materials.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: November 7, 2006
    Assignee: Eastman Kodak Company
    Inventors: Mary C. Brick, William D. Ramsden, Doreen C. Lynch
  • Patent number: 7094524
    Abstract: Thermally developable photothermographic materials comprise a backside layer that includes a backside stabilizer to reduce fog formation in high humidity conditions, thereby providing improved shelf stability. Useful backside stabilizers include an amine organic base whose conjugate acid has a pKa greater than 5. These backside stabilizers can be provided particularly in non-photosensitive compositions that include an antihalation composition.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: August 22, 2006
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Kumars Sakizadeh, William D. Ramsden
  • Publication number: 20040146813
    Abstract: A photothermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more radiation absorbing compounds that provide a total absorbance of greater than 0.6 and up to and including 3 in the thermally-developable imaging layer(s). These photothermographic materials are independently coated and dried while the material is conveyed at a rate of at least 5 meters per minute.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 29, 2004
    Inventors: Bryan V. Hunt, Steven H. Kong, William D. Ramsden, Gary E. Labelle
  • Patent number: 6730461
    Abstract: A photothermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more radiation absorbing compounds that provide a total absorbance of greater than 0.6 and up to and including 3 in the thermally-developable imaging layer(s). These photothermographic materials are independently coated and dried while the material is conveyed at a rate of at least 5 meters per minute.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: May 4, 2004
    Assignee: Eastman Kodak Company
    Inventors: Bryan V. Hunt, Steven H. Kong, William D. Ramsden, Gary E. Labelle
  • Patent number: 6689547
    Abstract: A photothermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more radiation absorbing compounds that provide a total absorbance of greater than 0.6 and up to and including 3 in the thermally-developable imaging layer(s). These photothermographic materials exhibit reduced mottle without significant loss in sensitivity.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: February 10, 2004
    Assignee: Eastman Kodak Company
    Inventors: Bryan V. Hunt, Steven H. Kong, William D. Ramsden, Gary E. Labelle