Patents by Inventor Jiun-Chen Wu

Jiun-Chen Wu 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: 20020045680
    Abstract: The present invention provides multiple polymeric additive systems and processes for preparing multiple polymeric additive systems which contain a liquid component and a solid component, wherein the solid component contains two or more polymeric additive particles having different compositions. The present invention also provides polymeric compositions and processes for preparing polymeric compositions that include a polymeric component and a multiple polymeric additive system which contains a liquid component and a solid component, wherein the solid component contains two or more polymeric additive particles having different compositions. The disclosed compositions and processes are useful in the preparation of polymeric materials and articles produced therefrom.
    Type: Application
    Filed: August 31, 2001
    Publication date: April 18, 2002
    Inventors: Jane Elizabeth Weier, Chuen-Shyong Chou, Morris Christopher Wills, Jiun-Chen Wu, Eugene Patrick Dougherty
  • Patent number: 6322861
    Abstract: Polymer particles made from copolymers of multifunctional (meth)acrylate monomer and multifunctional aromatic monomers are disclosed. Also disclosed are methods of improving the compression characteristics of (meth)acrylate polymer particles by copolymerizing with a multifunctional (meth)acrylate monomer a multifunctional aromatic monomer. The particles are of a size, uniformity, and contain physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: November 27, 2001
    Assignee: Rohm and Haas Company
    Inventor: Jiun-Chen Wu
  • Patent number: 6271898
    Abstract: Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: August 7, 2001
    Assignee: Rohm and Haas Company
    Inventors: Richard Roy Clikeman, Morris Christopher Wills, Peter Reeves Sperry, Martin Vogel, Jiun-Chen Wu, Willie Lau
  • Patent number: 6187440
    Abstract: Polymer particles made from copolymers of multifunctional (meth)acrylate monomer and multifunctional aromatic monomers are disclosed. Also disclosed are methods of improving the compression characteristics of (meth)acrylate polymer particles by copolymerizing with a multifunctional (meth)acrylate monomer a multifunctional aromatic monomer. The particles are of a size, uniformity, and contain physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: February 13, 2001
    Assignee: Rohm and Haas Company
    Inventor: Jiun-Chen Wu
  • Patent number: 6037058
    Abstract: Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: March 14, 2000
    Assignee: Rohms and Haas Company
    Inventors: Richard Roy Clikeman, Morris Christopher Wills, Peter Reeves Sperry, Martin Vogel, Jiun-Chen Wu, Willie Lau
  • Patent number: 6031051
    Abstract: Methods for preparing uniformly sized polymer particles comprised of multi-functional monomers such as poly(1,4-butanediol diacrylate) and poly(1,6-hexanediol diacrylate) are disclosed. The particles are of a size, uniformity, and contain physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: February 29, 2000
    Assignee: Rohm and Haas Company
    Inventor: Jiun-Chen Wu
  • Patent number: 5976405
    Abstract: Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 2, 1999
    Assignee: Rohm and Haas Company
    Inventors: Richard Roy Clikeman, Morris Christopher Wills, Peter Reeves Sperry, Martin Vogel, Jiun-Chen Wu, Willie Lau
  • Patent number: 5846657
    Abstract: Methods for preparing uniformly sized polymer particles comprised of multi-functional monomers such as poly(1,4-butanediol diacrylate) and poly(1,6-hexanediol diacrylate) are disclosed. The particles are of a size, uniformity, and contan physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: December 8, 1998
    Assignee: Rohm and Haas Company
    Inventor: Jiun-Chen Wu
  • Patent number: 5835174
    Abstract: Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: November 10, 1998
    Assignee: Rohm and Haas Company
    Inventors: Richard Roy Clikeman, Morris Christopher Wills, Peter Reeves Sperry, Martin Vogel, Jiun-Chen Wu, Willie Lau
  • Patent number: 5508322
    Abstract: Blends of starch with acrylic polymers containing at least one of copolymerized acid or amide groups may be melt-processed into useful thermoplastic articles.
    Type: Grant
    Filed: January 5, 1995
    Date of Patent: April 16, 1996
    Inventors: Newman M. Bortnick, Roger K. Graham, Edward E. LaFleur, William J. Work, Jiun-Chen Wu
  • Patent number: 5403875
    Abstract: Blends of starch with acrylic polymers containing at least one of copolymerized acid or amide groups may be melt-processed into useful thermoplastic articles.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: April 4, 1995
    Assignee: Rohm and Haas Company
    Inventors: Newman M. Bortnick, Roger K. Graham, Edward E. LaFleur, William J. Work, Jiun-Chen Wu
  • Patent number: 5346954
    Abstract: Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: September 13, 1994
    Assignee: Rohm and Haas Company
    Inventors: Jiun-Chen Wu, William J. Work, David L. Dunkelberger, Newman M. Bortnick
  • Patent number: 5237004
    Abstract: Polymer particles in a size range between 2 and 15 micrometers, and having a refractive index close to, but not identical with, that of a matrix polymer and optionally having one or more enclosing shells, the outer shell being compatible with the matrix polymer, impart light-diffusing properties to the matrix polymer without degrading its physical properties, while the particles having a closer refractive index match to the matrix polymer impart gloss reduction to the surface of the matrix polymer.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: August 17, 1993
    Assignee: Rohm and Haas Company
    Inventors: Jiun-Chen Wu, William J. Work, David L. Dunkelberger, Newman M. Bortnick