Patents by Inventor David R. Whitcomb

David R. Whitcomb 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).

  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120301350
    Abstract: Nanowire preparation methods, compositions, and articles are disclosed. Such methods which reduce metal ions to metal nanowires in the presence of aluminum or gallium ions, are capable of producing long, narrow, nanowires useful for electronics and optical applications.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 29, 2012
    Inventor: David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120301349
    Abstract: Methods of preparing metal nanowire are disclosed that employ quaternary phosphonium salts. Such processes can produce long and thin nanowires. Compositions and articles comprising such nanowires are useful in electronics applications.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 29, 2012
    Inventor: David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120294755
    Abstract: Preparation methods, compositions, and articles useful for electronic and optical applications are disclosed. Such methods reduce metal ions to metal nanowires in the presence of bromide ions, IUPAC Group 14 elements in their +2 oxidation state, and optionally chloride ions. The product nanowires are useful in electronics applications.
    Type: Application
    Filed: April 10, 2012
    Publication date: November 22, 2012
    Inventors: Junping Zhang, David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120247272
    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: May 29, 2012
    Publication date: October 4, 2012
    Inventors: David R. Whitcomb, William D. Ramsden
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120183435
    Abstract: Methods of producing metal nanowires, compositions, and articles are disclosed. Such methods allow production of metal nanowires with reproducibly uniform diameter and length, even in the presence of catalyst concentration variation. Such metal nanowires are useful for electronics applications.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 19, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120183434
    Abstract: Methods of producing metal nanowires, compositions, and articles are disclosed. Such methods allow production of metal nanowires with reproducibly uniform diameter and length, even in the presence of catalyst concentration variation. Such metal nanowires are useful for electronics applications.
    Type: Application
    Filed: December 15, 2011
    Publication date: July 19, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    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
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120148844
    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
    Inventor: David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120148438
    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 5, 2011
    Publication date: June 14, 2012
    Inventor: David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    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
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    Publication number: 20120148443
    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 7, 2011
    Publication date: June 14, 2012
    Inventor: David R. Whitcomb
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    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
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    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
  • NANOWIRE PREPARATION METHODS, COMPOSITIONS, AND ARTICLES
    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
  • TRANSPARENT CONDUCTIVE FILMS, ARTICLES, AND METHODS
    Publication number: 20110232945
    Abstract: Transparent conductive films, articles made from them, and methods of making them are disclosed. Some transparent conductive films include flexible glass substrates and conductive layers containing metal nanoparticles. Others include at least one layer with cell walls that contain metal nanorods or conductive nanowires. Still others include a substrate with a coating disposed on it, with the coating including conductive components and photopolymers. Such films are useful in such articles as electronic displays, touch screens, and the like.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 29, 2011
    Inventors: David R. Whitcomb, Chaofeng Zou
  • Method of preparing silver carboxylate soaps
    Patent number: 7524621
    Abstract: Silver salts of long chain carboxylic acids are prepared from long chain carboxylic acids by sequential addition of at least two different alkali metal hydroxides, one of which is lithium hydroxide, followed by converting the mixture of alkali metal carboxylates to silver carboxylates. Photothermographic materials prepared from such silver carboxylates display improved Dmin aging with little if any affect on other sensitometric properties.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: April 28, 2009
    Assignee: Carestream Health, Inc.
    Inventors: Lilia P. Burleva, David R. Whitcomb
  • METHOD OF PREPARING SILVER CARBOXYLATE SOAPS
    Publication number: 20090081578
    Abstract: Silver salts of long chain carboxylic acids are prepared from long chain carboxylic acids by sequential addition of at least two different alkali metal hydroxides, one of which is lithium hydroxide, followed by converting the mixture of alkali metal carboxylates to silver carboxylates. Photothermographic materials prepared from such silver carboxylates display improved Dmin aging with little if any affect on other sensitometric properties.
    Type: Application
    Filed: September 21, 2007
    Publication date: March 26, 2009
    Inventors: Lilia P. Burleva, David R. Whitcomb
  • Direct thermographic materials with catechol borate reducing agents
    Patent number: 7282468
    Abstract: Non-photosensitive direct thermographic materials comprise a reducing agent that is a catechol borate compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: October 16, 2007
    Assignee: Carestream Health Inc.
    Inventors: Kumars Sakizadeh, Peter J. Cowdery-Corvan, Leif P. Olson, David R. Whitcomb
  • Thermographic materials containing ionic liquids
    Patent number: 7163786
    Abstract: Ionic liquids are added to black-and-white direct thermographic materials to provide increased image density or to allow for reduced silver coverage (that is, improved silver efficiency). Useful ionic liquids include imidazolium, pyrazolium, pyridinium, pyrimidinium, pyrazinium, tetra-alkylammonium, or tetra-alkylphosphonium cations.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: January 16, 2007
    Assignee: Eastman Kodak Company
    Inventors: Kumars Sakizadeh, Leif P. Olson, Peter J. Cowdery-Corvan, Takuzo Ishida, David R. Whitcomb
  • Direct thermographic materials with phenolic reducing agents
    Patent number: 7135432
    Abstract: Non-photosensitive direct thermographic materials comprise a reducing agent that is a specific ortho-amino-phenol, para-amino-phenol, or hydroquinone compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing. The materials are characterized by their calculated aqueous deprotonation and their calculated anion HOMO energies.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 14, 2006
    Assignee: Eastman Kodak Company
    Inventors: David R. Whitcomb, Leif P. Olson, Peter J. Cowdery-Corvan, Kumars Sakizadeh, Takuzo Ishida