Patents by Inventor Zhang-Lin Zhou

Zhang-Lin Zhou 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: 20120241695
    Abstract: Electronic inks are disclosed herein. The electronic ink includes a non-polar carrier fluid, a plurality of positively charged colorant particles dispersed in the non-polar carrier fluid, and a plurality of reverse co-micelles including a basic charge director and an acidic charge controlling agent. The basic charge director has a molecular weight that is within 5000 of a molecular weight of the acidic charge controlling agent.
    Type: Application
    Filed: October 16, 2009
    Publication date: September 27, 2012
    Inventors: Zhang-Lin Zhou, Jeffrey Todd Mabeck, Richard H. Henze
  • Patent number: 8273933
    Abstract: A method for forming a functionalized latex polymer includes polymerizing a heterogeneous dispersion of water insoluble monomers in water, thereby forming a latex polymer. An at least partially water soluble halogenated non-ionic group is reacted with the latex polymer, whereby a halogen is displaced from the non-ionic group, thereby forming an at least partially water soluble non-ionic group that attaches to the latex polymer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 25, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou, Kent Vincent
  • Publication number: 20120187346
    Abstract: A process for producing positively charged polymer encapsulated particles which have a size of less than 5 ?m and which include a positively charged polymer shell surrounding a core of particle. The process includes the steps of, firstly, dispersing the core particles in an aqueous solution; adding a mixture of monomers either before or after the dispersion step; then, polymerizing the monomers in view of obtaining polymer encapsulated particles, wherein the polymer shell of the particle includes polymers or co-polymers that have a functional group FG. Finally, the process includes the step of dispersing the encapsulated particles with surfactants and charge directors in view of obtaining positively charged encapsulated particle dispersions.
    Type: Application
    Filed: October 16, 2009
    Publication date: July 26, 2012
    Inventors: Doris Pik-Yiu Chun, Hou T. Ng, Zhang-Lin Zhou
  • Publication number: 20120190782
    Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid, a first colorant of a first color, and a second colorant of a second color that is different than the first color. The first colorant includes a particle core, and a basic functional group attached to a surface of the particle core. The second colorant includes a particle core, and an acidic functional group attached to a surface of the particle core. The acidic functional group and the basic functional group are configured to interact within the non-polar carrier fluid to generate a charge on the first colorant and an opposite charge on the second colorant.
    Type: Application
    Filed: October 16, 2009
    Publication date: July 26, 2012
    Inventors: Zhang-Lin Zhou, Jeffrey Todd Mabeck, Richard H. Henze
  • Patent number: 8184357
    Abstract: In one embodiment, a display element includes a first electrode, a second electrode, and a display cell defined by a dielectric material between the first electrode and the second electrode. The display cell includes a narrower portion adjacent the first electrode and a wider portion. The narrower portion has a first cross-sectional area and the wider portion has a second cross-sectional area. A cross-sectional area of the display cell gradually transitions between the first cross-sectional area and the second cross-sectional area. The display element includes a fluid with colorants within the display cell.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: May 22, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jong-Souk Yeo, Zhang-Lin Zhou, Pavel Kornilovich
  • Publication number: 20120118198
    Abstract: Electronic inks are disclosed herein. One embodiment of the electronic ink includes a non-polar carrier fluid, a plurality of negatively charged colorant particles dispersed in the non-polar carrier fluid, a small molecular additive, and a charge director. Each of the negatively charged colorant particles includes a surface modified with an acidic functional group. The small molecular additive has at least two branches, each of which includes nitrogen or oxygen atoms.
    Type: Application
    Filed: October 16, 2009
    Publication date: May 17, 2012
    Inventors: Zhang-Lin Zhou, Jong-Souk Yeo, Jeffrey Todd Mabeck, Richard H. Henze
  • Publication number: 20120105938
    Abstract: A pigment-based ink includes a non-polar carrier fluid and pigment particles suspended in the non-polar carrier fluid. The pigment particles have surface functionalized anionic groups. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.
    Type: Application
    Filed: November 2, 2010
    Publication date: May 3, 2012
    Inventors: Qin Liu, Zhang-Lin Zhou
  • Publication number: 20120081778
    Abstract: A pigment-based ink comprises: a non-polar carrier fluid; and pigment particles suspended in the non-polar carrier fluid. The pigment particles are coated with a metal oxide that is modified with at least one silane coupling agent to introduce functional groups, steric stabilizers or both. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 5, 2012
    Inventors: Qin Liu, Zhang-Lin Zhou, Tim R. Koch
  • Publication number: 20120018716
    Abstract: An emissive semi-interpenetrating polymer network (E-semi-IPN) includes a semi-interpenetrating polymer network and an emissive material interlaced in the polymer network. The semi-interpenetrating polymer network includes in a crosslinked state one or more of a polymerized organic monomer and a polymerized organic oligomer, polymerized water soluble polymerizable agent, and one or more polymerized polyfunctional cross-linking agents. The E-semi-IPN may be employed as an E-semi-IPN layer (16, 36, 56) in organic light emitting devices (10, 20, 30, 40).
    Type: Application
    Filed: July 31, 2009
    Publication date: January 26, 2012
    Inventors: Lihua Zhao, Zhang-Lin Zhou, James A. Brug, Sity Lam, Gary Gibson
  • Publication number: 20110304902
    Abstract: In one embodiment, a display element includes a first electrode, a second electrode, and a display cell defined by a dielectric material between the first electrode and the second electrode. The display cell includes a narrower portion adjacent the first electrode and a wider portion. The narrower portion has a first cross-sectional area and the wider portion has a second cross-sectional area. A cross-sectional area of the display cell gradually transitions between the first cross-sectional area and the second cross-sectional area. The display element includes a fluid with colorants within the display cell.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 15, 2011
    Inventors: Jong-Souk Yeo, Zhang-Lin Zhou, Pavel Kornilovich
  • Publication number: 20110284830
    Abstract: A polymer-nanoparticle composition of formula II includes a polymer of formula I. The polymer has two portions. One portion of the polymer includes a binding group that binds to a nanoparticle. The other portion of the polymer includes a hydrophobic moiety.
    Type: Application
    Filed: January 30, 2009
    Publication date: November 24, 2011
    Inventors: Zhang-Lin Zhou, Lihua Zhao, Sity Lam, Gary Gibson, Jian Pei
  • Publication number: 20110278560
    Abstract: A fluorene-based copolymer of formula I includes a monomeric unit that includes a fluorene group and at least one steric hindering chemical group to provide sufficient steric interaction such that the spatial conformation of the fluorene-based copolymer is substantially non-planar. The fluorene-based copolymer exhibits UV light emission.
    Type: Application
    Filed: January 30, 2009
    Publication date: November 17, 2011
    Inventors: Zhang-Lin Zhou, Chung Ching Yang
  • Publication number: 20110281103
    Abstract: Copolymers and methods using the copolymers control the stability, the homogeneity of mixtures and the chargeability of a nanoparticle. A block copolymer-nanoparticle composition includes first, second and third block units that each include repeating units of respective monomers. The monomer of the first block unit includes a binding group that binds to the nanoparticle. The monomer of the second block unit includes a hydrophobic moiety that provides steric stabilization of the nanoparticle and homogeneity of mixtures of the copolymer-nanoparticle composition in a non-polar medium. The monomer of the third block unit includes a chargeable group that imparts a charge to the nanoparticle. An order of the respective block units in the copolymer and the number of repeating units of the monomer in the respective block units control the stability, the homogeneity of mixtures and the charge of the nanoparticle.
    Type: Application
    Filed: January 30, 2009
    Publication date: November 17, 2011
    Inventors: Zhang-Lin Zhou, Sivapackia Ganapathiappan, Gary Gibson
  • Publication number: 20110269240
    Abstract: The present invention is drawn toward a chemical or biological sensor that can comprise a semi-conducting nanowire and a chemical or biological sensing molecule tethered to the semi-conducting nanowire through a spacer group including a hydrophilic reactive group. In one embodiment, the semi-conducting nanowire can be part of an array of like or similar semi-conducting nanowires. Electrical leads can provide an electrical current to the array, and a signal measurement apparatus can be electrically coupled to the array, and can be configured for detecting changes in the electrical current of the array.
    Type: Application
    Filed: March 8, 2004
    Publication date: November 3, 2011
    Inventors: Zhang-Lin Zhou, Zhiyong Li, Sean Xiao-An Zhang
  • Publication number: 20110266347
    Abstract: An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.
    Type: Application
    Filed: December 30, 2008
    Publication date: November 3, 2011
    Inventors: Yaron Grinwald, Stella Stolin Roditi, Yigal Berson, Zhang-Lin Zhou, Gregg Alan Combs, Jeffrey Todd Mabeck, Albert Teishev
  • Patent number: 8048377
    Abstract: The present invention is drawn toward a chemical or biological sensor that can comprise a semi-conducting nanowire and a chemical or biological sensing molecule tethered to the semi-conducting nanowire through a spacer group including a hydrophilic reactive group. In one embodiment, the semi-conducting nanowire can be part of an array of like or similar semi-conducting nanowires. Electrical leads can provide an electrical current to the array, and a signal measurement apparatus can be electrically coupled to the array, and can be configured for detecting changes in the electrical current of the array.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: November 1, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Zhiyong Li, Sean Xiao-An Zhang
  • Publication number: 20110261435
    Abstract: An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.
    Type: Application
    Filed: December 30, 2008
    Publication date: October 27, 2011
    Inventors: Yaron Grinwald, Stella Stolin Roditi, Yigal Berson, Zhang-Lin Zhou, Gregg Alan Combs, Jeffrey Todd Mabeck, Albert Teishev
  • Patent number: 8044212
    Abstract: Various embodiment of the present invention are directed to organic molecules that are reconfigurable under application of an external electric field. One organic molecule embodiment of the present invention has the structure: where L1X1 and L2X2 are optional connector groups, A represents an electron acceptor group, D represents an electron donor group, R and R? represent spacer molecules, and R1, R2, R3, R4, R5, R6, R7, and R8 represent atoms and hydrocarbons.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: October 25, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Zhiyong Li
  • Publication number: 20110204234
    Abstract: A phthalocyanine dye with extended conjugation includes one or both of a phthalocyanine component and a naphthalocyanine component and at least one water soluble substituent on an aryl group of the phthalocyanine dye. The extended conjugation of the phthalocyanine dye includes at least one benzene moiety of the component being one of (a) joined to an aryl group either indirectly using an alkylene linkage or directly, (b) joined to a benzene moiety of another of the components to form an oligomer of the components, and (c) a combination of (a) and (b). The extended conjugation shifts absorption of the phthalocyanine dye to greater than 800 nm.
    Type: Application
    Filed: October 30, 2008
    Publication date: August 25, 2011
    Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou, Jayprakash C. Bhatt
  • Publication number: 20110207036
    Abstract: An electrophoretic particle salt that includes a cationic electrophoretic particle and an anionic group ionically associated with the cationic electrophoretic particle is employed in an electrophoretic display. A spacer group chemically bonds a cationic moiety to a surface of the electrophoretic particle. A method of making the electrophoretic particle salt includes particle surface modification, nucleophilic substitution to create an interim salt and anion exchange. The electrophoretic particle salt has an ionization constant that favors dissociation into a positively charged electrophoretic particle and the anionic group in a nonpolar medium. The electrophoretic display includes a pair of electrodes and a dispersion of the electrophoretic particle salt in a nonpolar medium in a gap between the pair of electrodes.
    Type: Application
    Filed: October 30, 2008
    Publication date: August 25, 2011
    Inventors: Yoocharn Jeon, Zhang-Lin Zhou