Patents by Inventor Beng S. Ong

Beng S. Ong 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).

  • SECURITY SYSTEM USING CONDUCTIVE AND NON-CONDUCTIVE REGIONS
    Publication number: 20080122881
    Abstract: Disclosed is an item, for example a document, including a substrate having thereon a multiplicity of separate printed markings, wherein the printed markings include both conductive printed markings and substantially non-conductive printed markings. The different conductive and substantially non-conductive regions on the substrate can be detected, for example by measuring the resistance or current of each printed marking. The pattern of different conductive and substantially non-conductive regions can be used as a security pattern of authenticity that cannot be replicated by standard office equipment, and/or can be used to encrypt information in binary code form in the item. A system for forming and detecting the different printed markings is also described.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Applicant: XEROX CORPORATION
    Inventors: Gabriel Iftime, Yiliang Wu, Paul F. Smith, Peter M. Kazmaier, Beng S. Ong
  • Functionalized heteroacenes and electronic devices generated therefrom
    Patent number: 7372071
    Abstract: An electronic device, such as a thin film transistor containing a semiconductor of, for example, of the Formula (I) wherein R represents alkyl, alkoxy, aryl, heteroaryl or a suitable hydrocarbon; each R1 and R2 is independently hydrogen (H), a suitable hydrocarbon; a heteroatom containing group or a halogen; R3 and R4 are independently a suitable hydrocarbon, a heteroatom containing group, or a halogen; x and y represent the number of groups; Z represents sulfur, oxygen, selenium, or NR? wherein R? is hydrogen, alkyl, or aryl; and n and m represent the number of repeating units.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 13, 2008
    Assignee: Xerox Corporation
    Inventors: Yuning Li, Yiliang Wu, Beng S. Ong, Ping Liu
  • Electronic devices
    Publication number: 20080102559
    Abstract: An electronic device, such as a thin film transistor containing a semiconductor of Formula/Structure wherein R, R? and R? are, for example, independently hydrogen, a suitable hydrocarbon, a suitable hetero-containing group, a halogen, or mixtures thereof; and n represents the number of repeating units.
    Type: Application
    Filed: October 25, 2006
    Publication date: May 1, 2008
    Inventors: Beng S. Ong, Hualong Pan, Yuning Li, Yiliang Wu, Ping Liu
  • Poly(dithienylbenzo[1,2-B:4,5-B']dithiophene) polymers
    Publication number: 20080103286
    Abstract: A polymer of the formula/structure wherein R, R?, and R? are, for example, a suitable hydrocarbon, a halogen (halide) a hetero-containing group, or mixtures thereof; and n represents the number of repeating groups.
    Type: Application
    Filed: October 25, 2006
    Publication date: May 1, 2008
    Inventors: Beng S. Ong, Hualong Pan, Yuning Li, Yiliang Wu, Ping Liu
  • Thin film transistor
    Publication number: 20080099803
    Abstract: A thin film transistor is disclosed comprising comprises a substrate, a dielectric layer, and a semiconductor layer. The semiconductor layer, which is crystalline zinc oxide preferentially oriented with the c-axis perpendicular to the plane of the dielectric layer or substrate, is prepared by liquid depositing a zinc oxide nanodisk composition. The thin film transistor has good mobility and on/off ratio.
    Type: Application
    Filed: October 12, 2006
    Publication date: May 1, 2008
    Inventors: Yuning Li, Beng S. Ong
  • Silver-containing nanoparticles with replacement stabilizer
    Publication number: 20080085594
    Abstract: A process including: providing a composition comprising silver-containing nanoparticles and molecules of an initial stabilizer on the surface of the silver-containing nanoparticles; and mixing a replacement stabilizer comprising a carboxylic acid with the composition to replace at least a portion of the initial stabilizer with the replacement stabilizer, resulting in molecules of the replacement stabilizer on the surface of the silver-containing nanoparticles.
    Type: Application
    Filed: October 5, 2006
    Publication date: April 10, 2008
    Inventors: Yuning Li, Beng S. Ong
  • Organic thin-film transistors
    Patent number: 7345303
    Abstract: A novel barrier layer which protects electronic devices from adverse environmental effects such as exposure to light, especially white light, is described. The barrier layer comprises a copolymer having an acrylate unit and an acrylate unit with a pendant dye group. Also disclosed are processes for producing such electronic devices.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: March 18, 2008
    Assignee: Xerox Corporation
    Inventors: Mihaela Maria Birau, Yiliang Wu, Beng S. Ong
  • Emulsion/aggregation processes using coalescent aid agents
    Publication number: 20080063965
    Abstract: A process for preparing a toner includes mixing a polymeric resin emulsion, a colorant dispersion, and a wax to form a mixture; optionally adding a coagulant to the mixture; heating the mixture at a temperature below a glass transition temperature of the polymeric resing to aggregate the polymeric resin, colorant, and wax, to form aggregated particles; and adding a coalescent agent to the aggregated particles; heating the aggregated particles and coalescent agent at a temperature above the glass transition temperature of the polymeric resin, to coalesce the aggregated particles to form toner particles, optionally cooling the mixture, and isolating the tone particles.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 13, 2008
    Applicant: Xerox Corporation
    Inventors: Zhen Lai, Richard Fong, Yuhua Tong, Chieh-Min Cheng, Amy A. Grillo, Paul F. Smith, Paul J. Gerroir, Beng S. Ong
  • Fabricating amorphous zinc oxide semiconductor layer
    Publication number: 20080032444
    Abstract: A process for fabricating a semiconductor layer of an electronic device including: liquid depositing one or more zinc oxide precursor compositions and forming at least one semiconductor layer of the electronic device comprising predominately amorphous zinc oxide from the liquid deposited one or more zinc oxide precursor compositions.
    Type: Application
    Filed: August 2, 2006
    Publication date: February 7, 2008
    Inventors: Yiliang Wu, Yuning Li, Beng S. Ong
  • Fabricating Zinc oxide semiconductor using hydrolysis
    Publication number: 20080032443
    Abstract: 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: Application
    Filed: August 2, 2006
    Publication date: February 7, 2008
    Inventors: Yiliang Wu, Beng S. Ong
  • Device having zinc oxide semiconductor and indium/zinc electrode
    Publication number: 20080023698
    Abstract: An electronic device including: (a) a semiconductor layer including crystalline zinc oxide; and (b) an electrode including a suitable amount of zinc, indium, or a mixture thereof.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 31, 2008
    Inventors: Yuning Li, Beng S. Ong
  • Electrically conductive feature fabrication process
    Publication number: 20080020572
    Abstract: 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: Application
    Filed: July 20, 2006
    Publication date: January 24, 2008
    Inventors: Yiliang Wu, Beng S. Ong
  • Device with small molecular thiophene compound
    Patent number: 7312469
    Abstract: 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: Grant
    Filed: June 10, 2004
    Date of Patent: December 25, 2007
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Maria Birau, Yiliang Wu
  • Fabrication process for crystalline zinc oxide semiconductor layer
    Publication number: 20070287221
    Abstract: A process for fabricating at least one semiconductor layer of a thin film transistor composed of: liquid depositing one or more zinc oxide-precursor compositions and forming the at least one semiconductor layer of the thin film transistor including crystalline zinc oxide preferentially oriented with the c-axis perpendicular to the plane of the at least one semiconductor layer from the liquid deposited one or more zinc oxide-precursor compositions.
    Type: Application
    Filed: June 12, 2006
    Publication date: December 13, 2007
    Inventors: Beng S. Ong, Yuning Li, Yiliang Wu
  • Methods to minimize contact resistance
    Patent number: 7306969
    Abstract: A method is disclosed for making a metal electrode which minimizes the contact resistance between it and an organic semiconductor. Acid-stabilized metal nanoparticles are deposited upon a substrate and annealed. This creates a metal electrode and releases acid. Upon deposition of semiconductor and subsequent annealing, the acid diffuses from the electrode into the semiconductor layer and acts as a dopant, minimizing the contact resistance. The use of oleic acid-stabilized silver nanoparticles is demonstrated.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: December 11, 2007
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Beng S. Ong, Yuning Li
  • Device with small molecular thiophene compound having divalent linkage
    Patent number: 7294850
    Abstract: 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: Grant
    Filed: June 10, 2004
    Date of Patent: November 13, 2007
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Yiliang Wu
  • Polythiophenes and devices thereof
    Patent number: 7282733
    Abstract: An electronic device containing a polythiophene wherein R represents a side chain, m represents the number of R substituents; A is a divalent linkage; x, y and z represent, respectively, the number of Rm substituted thienylenes, unsubstituted thienylenes, and divalent linkages A, respectively, in the monomer segment subject to z being 0 or 1, and n represents the number of repeating monomer segments in the polymer or the degree of polymerization.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: October 16, 2007
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
  • TFT having a fluorocarbon-containing layer
    Patent number: 7282735
    Abstract: 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: Grant
    Filed: March 10, 2006
    Date of Patent: October 16, 2007
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Ping Liu, Beng S Ong
  • Polydiazaacenes and electronic devices generated therefrom
    Publication number: 20070235720
    Abstract: An electronic device, such as a thin film transistor, containing a polymer of the formula or structure wherein at least one of each R, R1, R2, R3, R4, R5 and R6 is independently hydrogen, alkyl, aryl, alkoxy, halogen, arylalkyl, cyano, or nitro; x and y represent the number of R substituents; a and b represent the number of rings; and n represents the number of repeating groups or moieties.
    Type: Application
    Filed: April 6, 2006
    Publication date: October 11, 2007
    Inventors: Yiliang Wu, Ping Liu, Beng S. Ong
  • Stabilized silver nanoparticles and their use
    Patent number: 7270694
    Abstract: 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: Grant
    Filed: October 5, 2004
    Date of Patent: September 18, 2007
    Assignee: Xerox Corporation
    Inventors: Yuning Li, Yiliang Wu, Beng S. Ong