Patents by Inventor Ying-Syi Li

Ying-Syi Li 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: 20080269485
    Abstract: This invention relates to process for preparing fluorinated dyes selected from the group consisting of compounds of the general formulae (I) and (III) and mixtures thereof by reacting the corresponding compounds which do not have R12 or R30 as substituents with compounds of the general formula R12A or R30A where A is selected from the group consisting of I and Br, the compounds obtained from said process and the use of these fluorinated dyes in electrophoretic displays.
    Type: Application
    Filed: August 29, 2007
    Publication date: October 30, 2008
    Applicants: BASF Aktiengesellschaft, SIPIX IMAGING, INC.
    Inventors: Nicolle MOONEN, Stephan Hess, Jianqiang Qu, Markus Hoffmann, Ying-Syi Li, Jin Yang, Gerhard Wagenblast, Alfred Rennig, Thomas Gessner, Helmut Reichelt, Patrick Amrhein
  • Publication number: 20080173847
    Abstract: The present invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention have shown to improve the performance of electrophoretic displays. The invention is particularly directed to a fluorinated porphyrin dye or colorant expressed by Formula (VII).
    Type: Application
    Filed: March 21, 2008
    Publication date: July 24, 2008
    Inventors: Jin Yang, Kai-Chia Feng, Ying-Syi Li, HongMei Zang, Hong Wang, Chien-Hung Chou, Rong-Chang Liang
  • Patent number: 7390901
    Abstract: This invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention have shown to improve the performance of electrophoretic displays.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: June 24, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Jin Yang, Kai-Chia Feng, Ying-Syi Li, HongMei Zang, Hong Wang, Chien-Hung Chou, Rong-Chang Liang
  • Publication number: 20070042135
    Abstract: This invention relates to a liquid crystal display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture. The liquid crystal display of the present invention comprises microcups as display cells, wherein the microcups are formed from a microcup composition and filled with a liquid crystal composition.
    Type: Application
    Filed: August 17, 2006
    Publication date: February 22, 2007
    Inventors: Rong-Chang Liang, Scott Tseng, Ying-Syi Li, HongMei Zang
  • Publication number: 20060281924
    Abstract: This invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention improve the performance of electrophoretic displays.
    Type: Application
    Filed: May 31, 2006
    Publication date: December 14, 2006
    Inventors: Jin Yang, Ying-Syi Li, Haiyan Gu, Yajuan Chen
  • Patent number: 7141688
    Abstract: The present invention is directed to novel fluorinated dye stabilizers having both high quenching efficiency and solubility in halogenated solvents. These dye stabilizers have shown a significantly effect on improving the dye fastness in hostile photooxidation conditions.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: November 28, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: Kai-Chia Feng, Ying-Syi Li, Jin Yang, HongMei Zang, Haiyan Gu, Sundaravel P. Ananthavel, Rong-Chang Liang
  • Patent number: 7141279
    Abstract: This invention relates to a liquid crystal display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: November 28, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Ying-Syi Li
  • Patent number: 7095477
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: August 22, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C. J. Tseng, Xuan Thanh Phan, Ying-Syi Li, Weijin Li
  • Publication number: 20050039274
    Abstract: This invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention have shown to improve the performance of electrophoretic displays.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 24, 2005
    Inventors: Jin Yang, Kai-Chia Feng, Ying-Syi Li, HongMei Zang, Hong Wang, Chien-Hung Chou, Rong-Chang Liang
  • Patent number: 6795138
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 21, 2004
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Publication number: 20040170776
    Abstract: This invention relates to a liquid crystal display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture.
    Type: Application
    Filed: November 21, 2003
    Publication date: September 2, 2004
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Ying-Syi Li
  • Publication number: 20040169813
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Inventors: Rong-Chang Liang, Scott C.J. Tseng, Xuan Thanh Phan, Ying-Syi Li, Weijin Li
  • Patent number: 6784953
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: August 31, 2004
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Publication number: 20040131958
    Abstract: The present invention is directed to novel fluorinated dye stabilizers having both high quenching efficiency and solubility in halogenated solvents. These dye stabilizers have shown a significantly effect on improving the dye fastness in hostile photooxidation conditions.
    Type: Application
    Filed: October 14, 2003
    Publication date: July 8, 2004
    Inventors: Kai-Chia Feng, Ying-Syi Li, Jin Yang, HongMei Zang, Haiyan Gu, Sundaravel P. Ananthavel, Rong-Chang Liang
  • Publication number: 20040030125
    Abstract: This invention relates to stable colorants of high extinction coefficient and high solubility or dispersibility for an electrophoretic, magnetophoretic or electromagnetophoretic display. More particularly, it relates to stable colorants for a microcup-based electrophoretic or electromagnetophoretic display the cells of which are filled with charged and/or magnetic particles dispersed in a halogenated, preferably a fluorinated, solvent. The use of the stable colorants allows the display to be of superior contrast ratio and longevity, and suitable for high-quality imagery applications.
    Type: Application
    Filed: May 15, 2003
    Publication date: February 12, 2004
    Inventors: Ying-Syi Li, Jin Yang, Rong-Chang Liang
  • Patent number: 6645928
    Abstract: Nonionic, hydrophobic photobleach compounds, especially those based on Si(IV) phthalocyanines, which are liquid at ambient temperatures and their use in a variety of consumer product compositions.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: November 11, 2003
    Assignee: Case Western Reserve University
    Inventors: Malcolm Edward Kenney, Ying-Syi Li, Gongzhen Cheng, Rafael Ortiz, David Johnathan Kitko, Michael Eugene Burns
  • Publication number: 20030169387
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 11, 2003
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Patent number: 6593286
    Abstract: Consumer product compositions such as laundry detergents comprising selected photosensitive compounds for photobleaching, photodisinfection, antibacterial activity, hueing or other benefits. The compositions are preferably formulated with detersive surfactants and/or water-soluble polymers.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: July 15, 2003
    Assignee: Case Western Reserve University
    Inventors: Malcolm Edward Kenney, Ying-Syi Li, Rafael Ortiz, David Johnathan Kitko, Michael Eugene Burns
  • Publication number: 20020126249
    Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.
    Type: Application
    Filed: January 11, 2001
    Publication date: September 12, 2002
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
  • Patent number: 5872248
    Abstract: A simple, flexible, convenient method for making silicon phthalocyanines and naphthalocyanines by inserting silicon into metal-free phthalocyanines and metal-free naphthalocyanines is provided. The method comprises: providing a metal-free phthalocyanine or metal-free naphthalocyanine; reacting the metal-free phthalocyanine or metal-free naphthalocyanine with HSiCl.sub.3 to provide a reaction product; then reacting the reaction product with water; and extracting a silicon phthalocyanine or a silicon naphthalocyanine. The invention also relates to novel phthalocyanines and naphthalocyanines. The phthalocyanines and naphthalocyanines are useful as photosensitizers and as dyes.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: February 16, 1999
    Assignee: Case Western Reserve University
    Inventors: Gongzhen Cheng, Guolun Hao, Hongqiao Wu, Ying-Syi Li, Malcolm E. Kenney