Patents Represented by Attorney Zosan Soong
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Patent number: 7935278Abstract: A process including: (a) forming a feature comprising uncoalesced silver-containing nanoparticles; (b) heating the uncoalesced silver-containing nanoparticles to form coalesced silver-containing nanoparticles wherein the feature comprising the coalesced silver-containing nanoparticles exhibits a low electrical conductivity; and (c) subjecting the coalesced silver-containing nanoparticles to an acid-containing composition to increase the electrical conductivity of the feature by at least about 100 times.Type: GrantFiled: March 5, 2009Date of Patent: May 3, 2011Assignee: Xerox CorporationInventors: Yiliang Wu, Mahya Mokhtari
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Patent number: 7528261Abstract: A small molecule compound including at least one type of an optionally substituted indolocarbazole moiety and at least one divalent linkage.Type: GrantFiled: December 17, 2007Date of Patent: May 5, 2009Assignee: Xerox CorporationInventors: Yuning Li, Beng S Ong, Yiliang Wu, Ping Liu
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Patent number: 7494608Abstract: A composition comprising a liquid and a plurality of silver-containing nanoparticles with a stabilizer, wherein the silver-containing nanoparticles are a product of a reaction of a silver compound with a reducing agent comprising a hydrazine compound in the presence of a thermally removable stabilizer in a reaction mixture comprising the silver compound, the reducing agent, the stabilizer, and an organic solvent wherein the hydrazine compound is a hydrocarbyl hydrazine, a hydrocarbyl hydrazine salt, a hydrazide, a carbazate, a sulfonohydrazide, or a mixture thereof and wherein the stabilizer includes an organoamine.Type: GrantFiled: August 10, 2007Date of Patent: February 24, 2009Assignee: Xerox CorporationInventors: Yuning Li, Yiliang Wu, Beng S Ong
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Patent number: 7491646Abstract: A process for fabricating an electrically conductive feature comprising: (a) liquid depositing a low viscosity composition comprising starting ingredients including an organic anine, a silver compound, and optionally an organic acid, to result in a deposited composition; and (b) heating the deposited composition, resulting in the electrically conductive feature comprising silver.Type: GrantFiled: July 20, 2006Date of Patent: February 17, 2009Assignee: Xerox CorporationInventors: Yiliang Wu, Beng S. Ong
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Patent number: 7491575Abstract: A process for fabricating at least one semiconductor layer of an electronic device including: performing on a composition including a hydrolyzable zinc compound a number of activities including: (a) hydrolyzing at least a portion of the hydrolyzable zinc compound to form zinc oxide; (b) liquid depositing; and (c) optionally heating, wherein the activities (a), (b), and (c) are each accomplished a number of times in any effective arrangement, resulting in the at least one semiconductor layer comprising the zinc oxide.Type: GrantFiled: August 2, 2006Date of Patent: February 17, 2009Assignee: Xerox CorporationInventors: Yiliang Wu, Beng S. Ong
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Patent number: 7456424Abstract: A thin film transistor composed of a semiconductor layer including an optionally substituted indolocarbazole.Type: GrantFiled: June 27, 2005Date of Patent: November 25, 2008Assignee: Xerox CorporationInventors: Yiliang Wu, Beng S. Ong, Yu Qi, Yuning Li
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Patent number: 7443027Abstract: An apparatus composed of: (a) a substrate; and (b) a deposited composition comprising a liquid and a plurality of metal nanoparticles with a covalently bonded stabilizer.Type: GrantFiled: November 3, 2005Date of Patent: October 28, 2008Assignee: Xerox CorporationInventors: Yiliang Wu, Yuning Li, Beng S. Ong
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Patent number: 7402681Abstract: A compound composed of a plurality of optionally substituted indolocarbazole moieties which are the same or different from each other.Type: GrantFiled: June 27, 2005Date of Patent: July 22, 2008Assignee: Xerox CorporationInventors: Beng S. Ong, Yu Qi, Yiliang Wu, Yuning Li
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Patent number: 7396852Abstract: A compound including at least one type of an optionally substituted indolocarbazole moiety and at least one divalent linkage.Type: GrantFiled: November 16, 2005Date of Patent: July 8, 2008Assignee: Xerox CorporationInventors: Yuning Li, Beng S. Ong, Yiliang Wu, Ping Liu
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Patent number: 7312469Abstract: An electronic device comprising a semiconductor layer in contact with a number of electrodes, wherein the semiconductor layer includes a small molecular thiophene compound consisting of a plurality of thiophene units, each thiophene unit being represented by structure (A) wherein each thiophene unit is bonded at either or both of the second ring position and the fifth ring position, wherein there is at least one thiophene unit where R1 is present at the third ring position or the fourth ring position, or at both the third ring position and the fourth ring position, wherein for any two adjacent thiophene units there is excluded the simultaneous presence of the same or different R1 at the 3-position of one thiophene unit and at the 3?-position of the other thiophene unit.Type: GrantFiled: June 10, 2004Date of Patent: December 25, 2007Assignee: Xerox CorporationInventors: Beng S. Ong, Ping Liu, Maria Birau, Yiliang Wu
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Patent number: 7300727Abstract: An image forming method composed of: (a) providing a reimageable medium composed of a substrate and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast; (b) exposing the medium to an imaging light corresponding to a predetermined image to result in an exposed region and a non-exposed region, wherein the color contrast is present between the exposed region and the non-exposed region to allow a temporary image corresponding to the predetermined image to be visible for a visible time; (c) subjecting the temporary image to an indoor ambient condition for an image erasing time to change the color contrast to the absence of the color contrast to erase the temporary image without using an image erasure device; and (d) optionally repeating procedures (b) and (c) a number of times to result in the medium undergoing a number of additional cycles of temporary image formation and temporary image erasure.Type: GrantFiled: April 29, 2004Date of Patent: November 27, 2007Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Gabriel Iftime
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Patent number: 7294850Abstract: An electronic device composed of a semiconductor layer in contact with a number of electrodes, wherein the semiconductor layer includes a small molecular thiophene compound consisting of: at least one divalent linkage; and a plurality of thiophene units, each thiophene unit being represented by structure (A) wherein each thiophene unit is bonded at either or both of the second ring position and the fifth ring position, wherein there is at least one thiophene unit where R1 is present at the third ring position or the fourth ring position, or at both the third ring position and the fourth ring position, wherein for any two adjacent thiophene units there is excluded the simultaneous presence of the same or different R1 at the 3-position of one thiophene unit and at the 3?-position of the other thiophene unit, and wherein the number of the thiophene units is at least 6.Type: GrantFiled: June 10, 2004Date of Patent: November 13, 2007Assignee: Xerox CorporationInventors: Beng S. Ong, Ping Liu, Yiliang Wu
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Patent number: 7282245Abstract: A device composed of: (a) a first liquid crystal composition including a first liquid crystal and a first liquid crystal domain stabilizing compound, wherein the first liquid crystal composition switches between a strongly scattering state of a first plurality of smaller liquid crystal domains that strongly scatters a predetermined light and a weakly scattering state of a second plurality of larger liquid crystal domains that weakly scatters the predetermined light; and (b) a second liquid crystal composition including a second liquid crystal and a second liquid crystal domain stabilizing compound, wherein the second liquid crystal composition switches between a strongly scattering state of a first plurality of smaller liquid crystal domains that strongly scatters the predetermined light and a weakly scattering state of a second plurality of larger liquid crystal domains that weakly scatters the predetermined light, wherein the second liquid crystal composition and the first liquid crystal composition are inType: GrantFiled: October 26, 2004Date of Patent: October 16, 2007Assignee: Xerox CorporationInventors: Gabriel Iftime, Hadi K. Mahabadi, Peter M. Kazmaier
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Patent number: 7282735Abstract: A thin film transistor composed of: (a) a semiconductor layer including a thiophene compound, wherein the thiophene compound comprises one or more substituted thiophene units, one or more unsubstituted thiophene units, and optionally one or more divalent linkages; (b) a gate dielectric; and (c) a layer contacting the gate dielectric disposed between the semiconductor layer and the gate dielectric, wherein the layer comprises a substance comprising a fluorocarbon structure.Type: GrantFiled: March 10, 2006Date of Patent: October 16, 2007Assignee: Xerox CorporationInventors: Yiliang Wu, Ping Liu, Beng S Ong
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Patent number: 7276565Abstract: A process including: heating to a first polymerization temperature a first mixture including a free radical polymerizable monomer, a free radical initiator, and a stable free radical compound to polymerize only a portion of the monomer, resulting in a prepolymer composition; shearing a second mixture including the prepolymer composition, a continuous phase liquid, and a stabilizing compound to create a miniemulsion; and flowing the miniemulsion within a polymerization reactor and heating the miniemulsion at a second polymerization temperature to form polymeric particles wherein the formation of the polymeric particles occurs while the miniemulsion flows within the reactor.Type: GrantFiled: June 20, 2003Date of Patent: October 2, 2007Assignee: Xerox CorporationInventors: Thomas E. Enright, Paul D. Szabo, Barkev Keoshkerian
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Patent number: 7270694Abstract: A process comprising: reacting a silver compound with a reducing agent comprising a hydrazine compound in the presence of a thermally removable stabilizer in a reaction mixture comprising the silver compound, the reducing agent, the stabilizer, and an optional solvent, to form a plurality of silver-containing nanoparticles with molecules of the stabilizer on the surface of the silver-containing nanoparticles.Type: GrantFiled: October 5, 2004Date of Patent: September 18, 2007Assignee: Xerox CorporationInventors: Yuning Li, Yiliang Wu, Beng S. Ong
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Patent number: 7214456Abstract: An reimageable medium composed of: a substrate; and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast, wherein the medium has a characteristic that when the medium exhibits the absence of the color contrast and is then exposed to an imaging light corresponding to a predetermined image to result in an exposed region and a non-exposed region, the color contrast is present between the exposed region and the non-exposed region to form a temporary image corresponding to the predetermined image that is visible for a visible time, wherein the medium has a characteristic that when the temporary image is exposed to an indoor ambient condition for an image erasing time, the color contrast changes to the absence of the color contrast to erase the temporary image in all of the following: (i) when the indoor ambient condition includes darkness at ambient temperature, (ii) when the indoor ambient condition includes indoor ambient light at ambient tempType: GrantFiled: April 29, 2004Date of Patent: May 8, 2007Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Peter M. Kazmaier
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Patent number: 7211301Abstract: A liquid crystal composition including: (a) a liquid crystal; and (b) a polymerized liquid crystal domain stabilizing compound comprising a dipolar monomer and a non-dipolar monomer.Type: GrantFiled: December 13, 2002Date of Patent: May 1, 2007Assignee: Xerox CorporationInventors: Gabriel Iftime, Peter M. Kazmaier
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Patent number: 7205088Abstract: A reimageable medium for receiving an imaging light having a predetermined wavelength scope, the medium composed of: a substrate; a photochromic material capable of reversibly converting among a number of different forms, wherein one form has an absorption spectrum that overlaps with the predetermined wavelength scope; and a light absorbing material exhibiting a light absorption band with an absorption peak, wherein the light absorption band overlaps with the absorption spectrum of the one form.Type: GrantFiled: April 29, 2004Date of Patent: April 17, 2007Assignee: Xerox CorporationInventors: Gabriel Iftime, Peter M. Kazmaier, James D. Mayo, Paul F. Smith
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Patent number: 7173140Abstract: A process composed of: reacting a reaction mixture comprised of one or more optionally substituted indolocarbazoles, a reaction medium, and a coupling agent at a reaction temperature to form a compound composed of a plurality of optionally substituted indolocarbazole moieties which are the same or different from each other.Type: GrantFiled: December 14, 2004Date of Patent: February 6, 2007Assignee: Xerox CorporationInventors: Yuning Li, Yiliang Wu, Beng S. Ong