Patents by Inventor Lujia Bu

Lujia Bu 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: 20080226889
    Abstract: Curable compositions are disclosed. Also disclosed are optical media comprising said curable compositions when cured and methods of making such optical media.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 18, 2008
    Applicant: Rohm and Haas Company
    Inventors: Lujia Bu, Edward C. Greer, Georg R. Kestler, Alan I. Nakatani, Charles R. Szmanda
  • Publication number: 20080062853
    Abstract: Memory devices and methods of storing and reading information are disclosed. Also disclosed are methods of storing information encoded with at least two polarization magnitudes and at least two polarization directions; wherein the polarization magnitudes provide a first channel for encoding information and the polarization directions provide a second channel for encoding information.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 13, 2008
    Inventors: Lujia Bu, Edward C. Greer, Charles R. Szmanda
  • Publication number: 20080049590
    Abstract: Memory devices and methods of storing information are disclosed. Also disclosed are methods of storing information in multi-bit format and memory devices with information stored in multi-bit format. Further disclosed are methods of reading stored information.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 28, 2008
    Inventors: Lujia Bu, Edward C. Greer, Charles R. Szmanda
  • Patent number: 7259210
    Abstract: A bone cement formulation stored as a solid component pack having 0.3 to 20 solid component pack weight percent of an elastomer and a polymer bead core having a polyacrylate terminated surface. The second component pack is a liquid component pack including an acrylate monomer. An alternate solid component pack includes 3 to 25 solid component pack weight percent of a polyacrylate and a rubber toughened polymethyl methacrylate. A cement mixing and delivering system according to the present invention includes a tube having an exit nozzle and an aperture. An end plate is adapted to seal against the interior of the tube aperture and the end plate has a plurality of needles protruding therefrom into the tube. A rotatable and slidable divider is received within the tube intermediate between the end plate and the exit nozzle. The divider includes at least two plates.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: August 21, 2007
    Assignee: The UAB Research Foundation
    Inventors: Aaron D. Puckett, Jr., Jack Lemons, Lujia Bu, Jimmy W. Mays
  • Patent number: 7214410
    Abstract: Disclosed herein is a process of forming a ferroelectric polymer film from a solution, wherein the solvent composition is selected so as to adjust the properties of the film. Films formed by this method have improved properties, particularly with respect to roughness and crystal domain size.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 8, 2007
    Assignee: Shipley Company, L.L.C.
    Inventors: Charles R. Szmanda, Kathleen B. Spear-Alfonso, Lujia Bu
  • Patent number: 6974858
    Abstract: Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to adjust the properties of a ferroelectric film made from the polymers. Films formed using the fractionated vinylidene fluoride polymers have improved properties, particularly with respect to roughness and crystal domain size, and suitability for use in data processing devices.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: December 13, 2005
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Lujia Bu, Charles R. Szmanda, Kathleen B. Spear-Alfonso, Kathleen M. O'Connell
  • Publication number: 20050211978
    Abstract: Disclosed herein is an electric field programmable film comprising a polymer bonded to an electroactive moiety. Disclosed herein too is a method of manufacturing an electric field programmable film comprising depositing upon a substrate, a composition comprising a polymer and an electroactive moiety that is bonded to the polymer. Disclosed herein too is a data processing machine comprising a processor for executing an instruction; and a memory device comprising an electric field programmable film, wherein the electric field programmable film comprises a polymer bonded to an electroactive moiety, and further wherein the memory device is in electrical and/or optical communication with the processor.
    Type: Application
    Filed: March 22, 2005
    Publication date: September 29, 2005
    Inventors: Lujia Bu, Emine Cagin, Chandra Cutler, Dana Gronbeck, Charles Szmanda
  • Patent number: 6924341
    Abstract: Methods and compositions for polymerization in ionic medium liquid at room temperature provide the benefit of allowing polymerization reactions to be carried out cheaply, and relatively quickly. The replacement of VOCs by these environmentally benign solvents has the further advantage of increased safety for chemical workers.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: August 2, 2005
    Assignee: The UAB Research Foundation
    Inventors: Jimmy W. Mays, Lujia Bu, Robin D. Rogers, Kunlun Hong, Hongwei Zhang
  • Publication number: 20050004302
    Abstract: A substituted (meth)acrylic copolymer leveling agent is useful in producing a ferroelectric polymer film that is especially suitable for use in a data processing device. Also disclosed is a a casting composition which includes the leveling agent, a film stack, and a data processing device comprising a ferroelectric film produced using the leveling agent.
    Type: Application
    Filed: March 8, 2004
    Publication date: January 6, 2005
    Applicant: Rohm and Haas Electronic Materials, L.L.C.
    Inventors: Charles Szmanda, Kathleen Spear-Alfonso, Lujia Bu
  • Publication number: 20040171773
    Abstract: Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to adjust the properties of a ferroelectric film made from the polymers. Films formed using the fractionated vinylidene fluoride polymers have improved properties, particularly with respect to roughness and crystal domain size, and suitability for use in data processing devices.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 2, 2004
    Applicant: Rohm and Haas Electronic Materials, L.L.C.
    Inventors: Lujia Bu, Charles R. Szmanda, Kathleen B. Spear-Alfonso, Kathleen M. O'Connell
  • Publication number: 20040158009
    Abstract: Methods and compositions for polymerization in ionic medium liquid at room temperature provide the benefit of allowing polymerization reactions to be carried out cheaply, and relatively quickly. The replacement of VOCs by these environmentally benign solvents has the further advantage of increased safety for chemical workers.
    Type: Application
    Filed: April 7, 2004
    Publication date: August 12, 2004
    Inventors: Jimmy W. Mays, Lujia Bu, Robin D. Rogers, Kunlun Hong, Hongwel Zhang
  • Publication number: 20040132859
    Abstract: A bone cement formulation stored as a solid component pack having 0.3 to 20 solid component pack weight percent of an elastomer and a polymer bead core having a polyacrylate terminated surface. The second component pack is a liquid component pack including an acrylate monomer. An alternate solid component pack includes 3 to 25 solid component pack weight percent of a polyacrylate and a rubber toughened polymethyl methacrylate. A cement mixing and delivering system according to the present invention includes a tube having an exit nozzle and an aperture. An end plate is adapted to seal against the interior of the tube aperture and the end plate has a plurality of needles protruding therefrom into the tube. A rotatable and slidable divider is received within the tube intermediate between the end plate and the exit nozzle. The divider includes at least two plates.
    Type: Application
    Filed: January 27, 2004
    Publication date: July 8, 2004
    Inventors: Aaron D. Puckett Jr, Jack Lemons, Lujia Bu, Jimmy W. Mays
  • Publication number: 20040131862
    Abstract: Disclosed herein is a process of forming a ferroelectric polymer film from a solution, wherein the solvent composition is selected so as to adjust the properties of the film. Films formed by this method have improved properties, particularly with respect to roughness and crystal domain size.
    Type: Application
    Filed: September 30, 2003
    Publication date: July 8, 2004
    Applicant: Shipley Company, L.L.C.
    Inventors: Charles R. Szmanda, Kathleen B. Spear-Alfonso, Lujia Bu