Patents by Inventor Roger E. Gaynor
Roger E. Gaynor 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).
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Patent number: 9296680Abstract: Methods for making amorphous resins for use in robust solid ink applications are disclosed in which an organic acid is reacted with an alcohol in the presence of a solvent in the amount of from about 0.5 to about 1.5 grams of solvent per gram of reaction product. The reaction product is an ester of tartaric acid or an ester of citric acid.Type: GrantFiled: November 29, 2011Date of Patent: March 29, 2016Assignee: XEROX CORPORATIONInventors: Roger E. Gaynor, Tila Tahmoures-Zadeh
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Patent number: 9105373Abstract: In an embodiment, there is a method of preparing a conductive ink formulation. The method can include dissolving a stabilizer in a first solvent, adding a reducing agent to the first solvent, adding a metal salt to the first solvent and forming a slurry by precipitating stabilized metal nanoparticles in the first solvent. The method can also include forming a wet cake of the stabilized metal nanoparticles and adding the wet cake to a second solvent. The second solvent can include at least one of a polyvinyl alcohol derivative. The wet cake may not be actively dried prior to being added to the second solvent.Type: GrantFiled: June 19, 2013Date of Patent: August 11, 2015Assignee: XEROX CORPORATIONInventors: Mahya Mokhtari, Tila Tahmoures-Zadeh, Roger E. Gaynor
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Publication number: 20140374670Abstract: In an embodiment, there is a method of preparing a conductive ink formulation. The method can include dissolving a stabilizer in a first solvent, adding a reducing agent to the first solvent, adding a metal salt to the first solvent and forming a slurry by precipitating stabilized metal nanoparticles in the first solvent. The method can also include forming a wet cake of the stabilized metal nanoparticles and adding the wet cake to a second solvent. The second solvent can include at least one of a polyvinyl alcohol derivative. The wet cake may not be actively dried prior to being added to the second solvent.Type: ApplicationFiled: June 19, 2013Publication date: December 25, 2014Inventors: Mahya Mokhtari, Tila Tahmoures-Zadeh, Roger E. Gaynor
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Patent number: 8815394Abstract: Encapsulated nanoscale particles of organic pigments include a polymer-based encapsulating material, and one or more nanoscale organic pigment particles encapsulated by the polymer-based encapsulating material. Such encapsulated nanoscale particles of organic pigments can be made by providing nanosized organic pigment particles comprised of surface-associated sterically bulky stabilizer compounds; providing a copolymer material comprising organic pigment-affinic functional groups and non pigment affinic monomer units; associating the nanoscale organic pigment particles with the copolymer material so as to effect a deposited layer or shell of the copolymer material around said nanoscale organic pigment particles, thereby producing an encapsulated nanoscale organic pigment particle; and optionally further reinforcing the encapsulated nanosized organic pigment particle with one or more surface treatments.Type: GrantFiled: March 9, 2009Date of Patent: August 26, 2014Assignee: Xerox CorporationInventors: Rina Carlini, Roger E. Gaynor, Paul F. Smith
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Patent number: 8765025Abstract: A metal nanoparticle composition includes an organic-stabilized metal nanoparticle and a solvent in which the solvent selected has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa0.5 or less. The metal nanoparticle composition is suitable for printing conductive lines that are uniform, smooth and narrow on various substrate surfaces. The metal nanoparticle composition is able to form printed conductive features having a coffee ring effect ratio of about 1.2 to about 0.8, a surface roughness of about 15 or less and a line width of about 200 microns or less.Type: GrantFiled: June 9, 2010Date of Patent: July 1, 2014Assignee: Xerox CorporationInventors: Yiliang Wu, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Nan-Xing Hu, Marko D. Saban
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Publication number: 20130137891Abstract: Methods for making amorphous resins for use in robust solid ink applications are disclosed in which an organic acid is reacted with an alcohol in the presence of a solvent in the amount of from about 0.5 to about 1.5 grams of solvent per gram of reaction product. The reaction product is an ester of tartaric acid or an ester of citric acid.Type: ApplicationFiled: November 29, 2011Publication date: May 30, 2013Applicant: XEROX CORPORATIONInventors: Roger E. Gaynor, Tila Tahmoures-Zadeh
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Patent number: 8366971Abstract: A composition that may be an electronic circuit element includes a metal nanoparticle, a silicone modified polyacrylate compound and a solvent. The silicone modified polyacrylate compound may be a silicone modified polyacrylate compound with at least one organic functional moiety. A method of forming conductive features on a substrate includes depositing a composition containing metal nanoparticles, a silicone modified polyacrylate compound and a solvent onto a substrate, and heating the deposited composition to a temperature from about 100° C. to about 200° C.Type: GrantFiled: April 2, 2010Date of Patent: February 5, 2013Assignee: Xerox CorporationInventors: Marko D. Saban, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Yiliang Wu
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Patent number: 8303858Abstract: The present disclosure relates to the process of making a photochromic composite having a photochromic polymer and a binder polymer. The photochromic polymer is made by solution polymerization of the photochromic monomer and two monomers in the presence of a base and the binder polymer is made by solution polymerization of the two monomers in the presence of a base.Type: GrantFiled: March 8, 2010Date of Patent: November 6, 2012Assignee: Xerox CorporationInventors: Kentaro Morimitsu, Adela Goredema, Gabriel Iftime, Peter M. Kazmaier, Roger E. Gaynor
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Patent number: 8147908Abstract: Process for producing organoamine-stabilized silver nanoparticles with a molar ratio of silver salt to organoamine of about 1:4 to about 1:10 are disclosed. The process includes: forming a solution including an organic solvent and a first amount of organoamine; adding silver salt particles to the solution; adding a second amount of organoamine to the solution; adding a hydrazine to the solution; and reacting the solution to form an organoamine-stabilized silver nanoparticles.Type: GrantFiled: June 9, 2010Date of Patent: April 3, 2012Assignee: Xerox CorporationInventors: Mahya Mokhtari, Roger E. Gaynor, Marko D. Saban
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Publication number: 20110305826Abstract: Process for producing organoamine-stabilized silver nanoparticles with a molar ratio of silver salt to organoamine of about 1:4 to about 1:10 are disclosed. The process includes: forming a solution including an organic solvent and a first amount of organoamine; adding silver salt particles to the solution; adding a second amount of organoamine to the solution; adding a hydrazine to the solution; and reacting the solution to form an organoamine-stabilized silver nanoparticles.Type: ApplicationFiled: June 9, 2010Publication date: December 15, 2011Applicant: XEROX CORPORATIONInventors: Mahya MOKHTARI, Roger E. Gaynor, Marko D. Saban
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Publication number: 20110305821Abstract: A metal nanoparticle composition includes an organic-stabilized metal nanoparticle and a solvent in which the solvent selected has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa0.5 or less. The metal nanoparticle composition is suitable for printing conductive lines that are uniform, smooth and narrow on various substrate surfaces. The metal nanoparticle composition is able to form printed conductive features having a coffee ring effect ratio of about 1.2 to about 0.8, a surface roughness of about 15 or less and a line width of about 200 microns or less.Type: ApplicationFiled: June 9, 2010Publication date: December 15, 2011Applicant: XEROX CORPORATIONInventors: Yiliang Wu, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Nan-Xing Hu, Marko D. Saban
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Publication number: 20110244117Abstract: A composition that may be an electronic circuit element includes a metal nanoparticle, a silicone modified polyacrylate compound and a solvent. The silicone modified polyacrylate compound may be a silicone modified polyacrylate compound with at least one organic functional moiety. A method of forming conductive features on a substrate includes depositing a composition containing metal nanoparticles, a silicone modified polyacrylate compound and a solvent onto a substrate, and heating the deposited composition to a temperature from about 100° C. to about 200° C.Type: ApplicationFiled: April 2, 2010Publication date: October 6, 2011Applicant: XEROX CORPORATIONInventors: Marko D. Saban, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Yiliang Wu
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Publication number: 20110215283Abstract: The present disclosure relates to the process of making a photochromic composite having a photochromic polymer and a binder polymer. The photochromic polymer is made by solution polymerization of the photochromic monomer and two monomers in the presence of a base and the binder polymer is made by solution polymerization of the two monomers in the presence of a base.Type: ApplicationFiled: March 8, 2010Publication date: September 8, 2011Applicant: XEROX CORPORATIONInventors: Kentaro Morimitsu, Adela Goredema, Gabriel Iftime, Peter M. Kazmaier, Roger E. Gaynor
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Patent number: 7947417Abstract: A process for preparing a high sensitivity titanyl phthalocyanine (TiOPc) pigment includes dissolving a Type I TiOPc in a suitable solvent, precipitating an intermediate TiOPc pigment by quenching the solution comprising the dissolved Type I TiOPc in a solvent system comprising an alcohol and alkylene chloride such as, for example, methylene chloride, and treating the intermediate TiOPc pigment with monochlorobenzene. The resultant TiOPc pigment, which is designated as a Type V TiOPc, is suitable for use as a charge generating material in a photoreceptor of an imaging device.Type: GrantFiled: November 18, 2004Date of Patent: May 24, 2011Assignee: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, Ah-Mee Hor, Roger E. Gaynor, Justin F. Galloway
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Patent number: 7947825Abstract: Processes for making organic pigments useful in imaging members, specifically for pigments that after further polymorphic conversion may be used in a charge generating layer of an imaging member. More specifically, there are described processes for producing titanyl phthalocyanine (TiOPc) in high yields using tetrahydronaphthalene as reaction solvent, such as TiOPc Type I. This pigment can be successfully converted to a high sensitivity crystal form useful as charge generating pigment in an imaging member.Type: GrantFiled: February 13, 2007Date of Patent: May 24, 2011Assignee: Xerox CorporationInventors: Marko D. Saban, George Liebermann, Roger E. Gaynor, Sandra Gardner, Cuong Vong, Evelyn Juandi
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Patent number: 7799493Abstract: A process including reacting a substituted or unsubstituted arylamine or a mixture thereof with a Vilsmeier reagent in the presence of a weakly polar liquid.Type: GrantFiled: March 10, 2008Date of Patent: September 21, 2010Assignee: Xerox CorporationInventors: Leanne D. Murphy, Roger E. Gaynor
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Publication number: 20090227711Abstract: Encapsulated nanoscale particles of organic pigments include a polymer-based encapsulating material, and one or more nanoscale organic pigment particles encapsulated by the polymer-based encapsulating material.Type: ApplicationFiled: March 9, 2009Publication date: September 10, 2009Applicant: XEROX CORPORATIONInventors: Rina CARLINI, Roger E. GAYNOR, Paul F. SMITH
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Patent number: 7537654Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes: mixing a quinacridone pigment precursor or crude quinacridone pigment with a first solution including an acid to form nanoscale quinacridone pigment particles; adding the first solution and formed nanoscale quinacridone pigment particles into a second solution including deionized water to form a third solution and to precipitate the nanoscale quinacridone pigment particles; and washing the precipitated nanoscale quinacridone pigment particles in a fourth solution including a surface additive compound, whereby the surface additive compound coats the nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.Type: GrantFiled: September 15, 2008Date of Patent: May 26, 2009Assignee: Xerox CorporationInventors: Roger E. Gaynor, C. Geoffrey Allen
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Patent number: 7534294Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes providing a first solution containing a surface additive compound in an acid; adding a quinacridone pigment precursor or crude quinacridone pigment into the first solution and causing the surface additive compound to coat formed nanoscale quinacridone pigment particles; and adding the first solution and coated nanoscale quinacridone pigment particles into a second solution containing deionized water to form a third solution and to precipitate the coated nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.Type: GrantFiled: April 14, 2008Date of Patent: May 19, 2009Assignee: Xerox CorporationInventors: Roger E. Gaynor, C. Geoffrey Allen
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Patent number: 7427323Abstract: A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.Type: GrantFiled: June 7, 2007Date of Patent: September 23, 2008Assignee: Xerox CorporationInventors: Maria M. Birau, Rina Carlini, C. Geoffrey Allen, Sandra J. Gardner, Karl W. Dawson, Peter G. Odell, Paul F. Smith, Caroline M. Turek, Roger E. Gaynor, Jeffrey H. Banning