Patents by Inventor Lu Zhang

Lu Zhang 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: 20080009420
    Abstract: The present invention is directed to a method for isothermal amplification of a plurality of different target nucleic acids, wherein the different target nucleic acids are amplified using universal primers and colonies produced thereby can be distinguished from each other. The method, therefore, generates distinct colonies of amplified nucleic acid sequences that can be analyzed by various means to yield information particular to each distinct colony.
    Type: Application
    Filed: March 19, 2007
    Publication date: January 10, 2008
    Inventors: Gary Schroth, David Lloyd, Lu Zhang, Tobias Barrost, Roberto Rigatti, Jonathan Boutell
  • Publication number: 20070154384
    Abstract: Titanium dioxide nanopowder is produced by a process, comprising: (a) reacting titanium tetrachloride and an oxygen containing gas in the vapor phase in a flame reactor, at a flame temperature of at least about 800° C.
    Type: Application
    Filed: February 26, 2007
    Publication date: July 5, 2007
    Inventors: Charles Musick, Austin Reid, Lu Zhang
  • Patent number: 7217407
    Abstract: The present invention is a method of increasing particle surface area and decreasing the concentration of over-sized particles in a process for making metal oxide particles, particularly nanoparticle TiO2, in an inlet-fed, plug flow, plasma reactor by vapor phase reaction of titanium tetrachloride and oxygen in the presence of a source of hydrogen to form titanium dioxide particles.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: May 15, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Lu Zhang
  • Patent number: 7208126
    Abstract: Titanium dioxide nanopowder is produced by a process, comprising: (a) reacting titanium tetrachloride and an oxygen containing gas in the vapor phase in a flame reactor, at a flame temperature of at least about 800° C. in the presence of (i) water vapor in an amount ranging from about 1000 to about 50,000 parts per million, based on the weight of titanium dioxide under production, (ii) a diluent gas in an amount greater than about 100 mole percent based on the titanium tetrachloride and oxygen containing gas and (iii) a nucleant consisting essentially of a cesium substance wherein the cesium substance is present in an amount ranging from about 10 to about 5000 parts per million, based on the weight of the titanium dioxide under production, the pressure of reaction being sufficient to form titanium dioxide nanopowder.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: April 24, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles David Musick, Austin H. Reid, Jr., Lu Zhang
  • Publication number: 20070085053
    Abstract: A process for preparing superparamagnetic transition metal nanoparticles by introducing into a gas stream a hydrocarbon and a transition metal carboxyl wherein the transition metal carbonyl is introduced downstream from the hydrocarbon; wherein at the point of introduction of the hydrocarbon the gas stream is in the form of a plasma, and wherein at the point of introduction of the transition metal carbonyl the gas stream is at a temperature of at least 1000° C.; followed by quenching to form carbon-coated transition metal nanoparticles; and wherein the gas stream consists essentially of at least one inert gas and hydrogen.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Inventors: John Gergely, Edwin Marston, Shekhar Subramoney, Lu Zhang
  • Patent number: 7170739
    Abstract: Electrochemical double layer capacitors are disclosed that advantageously include separators having at least one porous layer of nanofibers having average diameters of between about 50 nm and about 1000 nm that provide improved combinations of reduced thickness, barrier against the development of soft short-circuits and low ionic resistance as compared with known capacitor separators.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 30, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Pankaj Arora, Simon Frisk, Lu Zhang
  • Patent number: 7171090
    Abstract: An optical waveguide fiber comprises: (a) a core with a refractive index profile having, a radius, an alpha and a relative refractive index characterized by delta % that varies along the radius; (b) at least one cladding surrounding the core; wherein the alpha is less than 2.5, peak refractive index delta % is between 0.34% and 0.4%, the relative refractive index is less than 0.01% for all radii greater than 7 ?m, and this optical waveguide fiber has a mode field diameter MFD at a wavelength of 1310 nm of no more than 9.54 ?m, and attenuation less than: (a) 0.329 dB/km at a wavelength of 1310 nm, (b) 0.290 dB/km at a wavelength of 1383 nm, (c) 0.255 dB/km at a wavelength of 1410 nm, and (d) 0.189 dB/km at a wavelength of 1550 nm.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: January 30, 2007
    Assignee: Corning Incorporated
    Inventors: William Brashear Mattingly, III, Snigdharaj Kumar Mishra, Lu Zhang
  • Publication number: 20070003199
    Abstract: An optical waveguide fiber comprises: (a) a core with a refractive index profile having, a radius, an alpha and a relative refractive index characterized by delta% that varies along the radius; (b) at least one cladding surrounding the core; wherein the alpha is less than 2.5, peak refractive index delta % is between 0.34% and 0.4%, the relative refractive index is less than 0.01% for all radii greater than 7 pm, and this optical waveguide fiber has a mode field diameter MFD at a wavelength of 1310 nm of no more than 9.54 ?m, and attenuation less than: (a) 0.329 dB/km at a wavelength of 1310 nm, (b) 0.290 dB/km at a wavelength of 1383nm, (c) 0.255 dB/km at a wavelength of 1410 nm, and (d ) 0.189 dB/km at a wavelength of 1550 nm.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: William Mattingly, Snigdharaj Mishra, Lu Zhang
  • Publication number: 20060251573
    Abstract: Titanium dioxide nanopowder is produced by a process, comprising: (a) reacting titanium tetrachloride and an oxygen containing gas in the vapor phase in a flame reactor, at a flame temperature of at least about 800° C.
    Type: Application
    Filed: March 19, 2004
    Publication date: November 9, 2006
    Inventors: Charles Musick, Austin Reid, Lu Zhang
  • Patent number: 7112389
    Abstract: Alkaline and lithium batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barrier against short-circuiting and low ionic resistance as compared with known battery separators.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: September 26, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Pankaj Arora, Simon Frisk, Lu Zhang
  • Publication number: 20060199823
    Abstract: Substituted heteroaryl fused pyridine, pyrazine, and pyrimidine compounds that act as selective modulators of CRF 1 receptors are provided. These compounds are useful in the treatment of a number of CNS and periphereal disorders, particularly stress, anxiety, depression, cardiovascular disorders, and eating disorders. Methods of treatment of such disorders and well as packaged pharmaceutical compositions are also provided. Compounds of the invention are also useful as probes for the localization of CRF receptors and as standards in assays for CRF receptor binding. Methods of using the compounds in receptor localization studies are given.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 7, 2006
    Applicant: Neurogen Corporation
    Inventors: Ping Ge, Raymond Horvath, Lu Zhang, Yasuchika Yamaguchi, Bernd Kaiser, Xuechun Zhang, Suoming Zhang, He Zhao
  • Patent number: 7103250
    Abstract: An optical fiber (10) having a first section (10A) with little or no small-angle scattering (SAS) and a second section (10B) with an increased amount of SAS is disclosed. The optical fiber is formed by changing the draw temperature (TD) and/or the draw speed (VD) so as to induce index of refraction perturbations (P) at a core interface (40). The SAS optical fiber is useful in forming an evanescent optical fiber sensor (400), wherein the increased SAS enhances an evanescent wave portion (436) of a guided wave (434), which leads to increased sensitivity when measuring a property of a test medium (500).
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 5, 2006
    Assignee: Corning Incorporated
    Inventors: Lu Zhang, Daniel Aloysius Nolan, Snigdharaj Kumar Mishra, Alexej Sysoliatin
  • Publication number: 20060159596
    Abstract: The present invention provides a method and apparatus for the controlled synthesis of nanoparticles using a high temperature process. The reactor chamber includes a high temperature gas heated by means such as a plasma torch, and a reaction chamber. The homogenizer includes a region between the reactant inlets and the plasma (the spacer zone) to ensure that feeds from the reactant inlets are downstream of the recirculation zone induced by the high temperature gas. It also includes a region downstream of the reactant inlets that provides a nearly I dimensional (varying only in the axial direction) flow and concentration profile in the reaction zone to produce nanoparticles with narrow size distribution.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 20, 2006
    Inventors: Stephan De La Veaux, Lu Zhang
  • Publication number: 20060142419
    Abstract: The present invention is a dispersion composition comprising (1) a curable mixture of monomers, oligomers, or a combination thereof; and (2) superparamagnetic particles dispersed in the mixture of part (1) and a method for preparing such superparamagnetic particles. The composition of the present invention can be useful as a tool for detecting and/or deterring theft, counterfeiting, or the like in commercial transactions.
    Type: Application
    Filed: October 14, 2005
    Publication date: June 29, 2006
    Inventors: Jingjing Xu, Charles Molnar, Shekhar Subramoney, Michael Crawford, John Gergely, Lu Zhang, Edwin Marston
  • Publication number: 20060110524
    Abstract: A positive electrode plate-making process for a lead acid battery that produces an active material precursor comprising tetrabasic lead sulfate crystals with an average crystal width less than 20 ?m. The process includes mixing a lead and/or lead oxide powder and a paste additive with sulfuric acid to form a positive electrode paste composition, wherein the paste additive comprises ground tetrabasic lead sulfate crystals having an average particle size in the range of 1-20 ?m. The paste is then cured on a positive battery grid to form a positive electrode plate having the desired active material precursor containing tetrabasic lead sulfate crystals with an average crystal width less than 20 ?m. In an embodiment, curing is performed directly after applying the paste to the grid, with no intermediate steaming process.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Applicant: Delphi Technologies, Inc.
    Inventors: Lu Zhang, Douglas Davenport, Jason Connell
  • Publication number: 20060062461
    Abstract: A handwritten Chinese character input method and system is provided to allow users to enter Chinese characters to a data processor by adding less than three strokes and one selection movement such as mouse clicking or stylus or finger tapping. The system is interactive, predictive, and intuitive to use. By adding one or two strokes which are used to start writing a Chinese character, or in some case even no strokes are needed, users can find a desired character from a list of characters. The list is context sensitive. It varies depending on the prior character entered. Compared to other existing systems, this system can save users considerable time and efforts to entering handwritten characters.
    Type: Application
    Filed: October 27, 2005
    Publication date: March 23, 2006
    Inventors: Michael Longe, Jianchao Wu, Lu Zhang
  • Publication number: 20060018545
    Abstract: The invention provides a stroke and phonetic text input entry system that has substantially the same definition of stroke match as that used in T9, where the input is a phrasal input rather than a character input. The invention solves the problem of Chinese phrasal stroke and phonetic text input by allowing users to enter an arbitrary number of strokes for each character in a phrase, where each character is separated by a delimiter. In this way, the invention provides a system that is easily learned and efficiently applied. Thus, the invention makes it possible for users to enter multiple characters while keeping their single character input habits. Each Chinese character has a standard stroke sequence in Guo Biao (GB), which is the standard for mainland China, or multiple sequences for BIG5 Chinese Character Encoding for Traditional (Complex) Characters, which is the de facto standard in Taiwan but not used in mainland China.
    Type: Application
    Filed: January 21, 2005
    Publication date: January 26, 2006
    Inventors: Lu Zhang, Pim Meurs, Lian He, Ethan Bradford, Jianchao Wu, Jenny Lai, Kengchong Wong, Siu Leung
  • Patent number: 6961500
    Abstract: A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index ?c. The core includes at least three radially adjacent segments, a central core segment having a positive ?1, a moat segment having a negative refractive index ?2, and a ring segment having a positive refractive index ?3, wherein ?1>?3>?c>?2. The DCF exhibits a negative Dispersion Slope (DS), where ?0.29 (ps/nm2·km) at 1546 nm, a dispersion (D), where ?100<D<?120 (ps.nm·km) at 1546 nm, and a ? value (D/DS) at 1546 nm that is preferably between 250 and 387 nm. The DCF preferably has a cutoff wavelength (?c) less than 1500 nm, attenuation at 1550 nm of less than 0.6 dB/km, and a bend loss of less than 0.01 dB/m on a 40 mm mandrel at 1550 nm. A transmission link including the combination of a SMF and a DCF having a dispersion (D), where ?100<D<?120, is also disclosed.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: November 1, 2005
    Assignee: Corning Incorporated
    Inventor: Lu Zhang
  • Publication number: 20050118094
    Abstract: The present invention is a method of increasing particle surface area and decreasing the concentration of over-sized particles in a process for making metal oxide particles, particularly nanoparticle TiO2, in an inlet-fed, plug flow, plasma reactor by vapor phase reaction of titanium tetrachloride and oxygen in the presence of a source of hydrogen to form titanium dioxide particles.
    Type: Application
    Filed: September 3, 2004
    Publication date: June 2, 2005
    Inventor: Lu Zhang
  • Publication number: 20050119398
    Abstract: A process for minimizing and even eliminating over-sized particles in a vapor phase synthesis of metal oxide-containing particles comprising reacting oxygen with one of more vapor streams comprising a titanium halide, a silicon halide and a compound selected from the group consisting of phosphorous, germanium, boron, tin, niobium, chromium, silver, gold, palladium aluminum, and mixtures thereof in a plug flow, plasma reactor.
    Type: Application
    Filed: September 3, 2004
    Publication date: June 2, 2005
    Inventor: Lu Zhang