Patents by Inventor Tzu-Kwei Sun

Tzu-Kwei Sun 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).

  • Black dye composition and black ink composition for textile digital printing
    Patent number: 7524368
    Abstract: The present invention relates to a black dye composition, comprising: (a) at least one azo dye of the following formula (I), (b) at least one azo dye of the following formula (II) or (III), wherein R1, R2, and R3 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention for textile digital printing exhibits the properties of excellent color depth, fixation, stability of storage, stability and accuracy of printing for long time, and improves the issue of nozzle cloggage.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: April 28, 2009
    Assignee: Everlight USA, Inc.
    Inventors: Chuan-Hsi Lee, Tzu-Kwei Sun, Reng-Fang Lin, Hsiao-San Chen
  • Yellow dye compound and ink composition comprising the same
    Patent number: 7513943
    Abstract: A yellow dye compound having a structure of following formula (I) is disclosed: wherein R1, R2, R3, and R4, is defined the same as in the specification. The yellow dye compound can be used in ink-jet ink. Also disclosed is a yellow ink composition including the yellow dye compound having the above formula (I).
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: April 7, 2009
    Assignee: Everlight USA, Inc.
    Inventors: Chien-Wen Lee, Shih-Hung Wang, Feng-Hung Lo, Tzu-Kwei Sun
  • Yellow dye compound and ink composition comprising the same
    Publication number: 20090056586
    Abstract: A yellow dye compound having a structure of following formula (I) is disclosed: wherein R1, R2, R3, and R4, is defined the same as in the specification. The yellow dye compound can be used in ink-jet ink. Also disclosed is a yellow ink composition including the yellow dye compound having the above formula (I).
    Type: Application
    Filed: October 24, 2007
    Publication date: March 5, 2009
    Applicant: Everlight USA, Inc.
    Inventors: Chien-Wen Lee, Shih-Hung Wang, Feng-Hung Lo, Tzu-Kwei Sun
  • Diazo dyestuff compounds and their use
    Patent number: 7438753
    Abstract: The present invention relates to a diazo dyestuff compound of the following formula (I) wherein, M is H, Na, or Li. The formula (I) compound is particularly suitable for using as a component in a black dye composition for ink-jet printing ink, and inkjet printing inks with good light-fastness are obtained.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: October 21, 2008
    Assignee: Everlight USA, Inc.
    Inventors: Jen-Fang Lin, Tzu-Kwei Sun, Hsiao-San Chen, Wen-Chin Lin
  • Black dye composition and black ink composition for textile digital printing
    Publication number: 20080184912
    Abstract: The present invention relates to a black dye composition, comprising: (a) at least one azo dye of the following formula (I), (b) at least one azo dye of the following formula (II) or (III), wherein R1, R2, and R3 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention for textile digital printing exhibits the properties of excellent color depth, fixation, stability of storage, stability and accuracy of printing for long time, and improves the issue of nozzle cloggage.
    Type: Application
    Filed: September 10, 2007
    Publication date: August 7, 2008
    Applicant: Everlight USA, Inc.
    Inventors: Chuan-hsi Lee, Tzu-Kwei Sun, Reng-Fang Lin, Hsiao-San Chen
  • Black dye composition and black ink composition
    Patent number: 7387667
    Abstract: The present invention relates to a black dye composition, comprising: (a) a compound of the following formula (I), (b) a compound of the following formula (II), (c) a compound of the following formula (III), wherein R1, R2, R3, and R4 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention is suitable for paper ink-jet printing, and exhibits the properties of good light-fastness, high color strength, solubility, and fine fluency of ink.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: June 17, 2008
    Assignee: Everlight USA, Inc.
    Inventors: Wen-Chin Lin, Tzu-Kwei Sun, Reng-Fang Lin
  • Black dyes composition for ink-jet inks
    Patent number: 7288142
    Abstract: The present invention relates to a black dyes composition for ink-jet printing ink comprising (A) a compound of the following formula (I) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; (B) a compound of the following formula (II) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; and (C) a compound of the following formula (III) wherein, R1 is —SO2CH2CH2OSO3H or —SO2CH?CH2 or —SO2CH2CH2OH; M is H, Na or Li; these compositions are particularly suitable for using in paper inkjet printing ink, and inkjet printing inks with good light-fastness and solubility are obtained.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: October 30, 2007
    Assignee: Everlight USA, Inc.
    Inventors: Jen-Fang Lin, Chien-Wen Lee, Tzu-Kwei Sun, Tsung-Wen Huang
  • Yellow dye compound and the ink composition thereof
    Patent number: 7270702
    Abstract: The present invention discloses a yellow dye compound having a structure of the following formula (I): wherein M is H, Li, NH4 or Na. The dye compound of the present invention is particularly applied to yellow dye compound for paper-printing ink jet ink and can be made into yellow ink jet ink with greenish yellow, wide color gamut, and excellent solubility.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: September 18, 2007
    Assignee: Everlight USA, Inc.
    Inventors: Wen-Chin Lin, Tzu-Kwei Sun, Jen-Fang Lin
  • Yellow dye compound and the ink composition thereof
    Publication number: 20070155960
    Abstract: The present invention discloses a yellow dye compound having a structure of the following formula (I): wherein M is H, Li, NH4 or Na. The dye compound of the present invention is particularly applied to yellow dye compound for paper-printing ink jet ink and can be made into yellow ink jet ink with greenish yellow, wide color gamut, and excellent solubility.
    Type: Application
    Filed: June 15, 2006
    Publication date: July 5, 2007
    Applicant: Everlight USA, Inc.
    Inventors: Wen-Chin Lin, Tzu-Kwei Sun, Jen-Fang Lin
  • Diazo dyestuff compounds and their use
    Publication number: 20070050926
    Abstract: The present invention relates to a diazo dyestuff compound of the following formula (I) wherein, M is H, Na, or Li. The formula (I) compound is particularly suitable for using as a component in a black dye composition for ink-jet printing ink, and inkjet printing inks with good light-fastness are obtained.
    Type: Application
    Filed: June 15, 2006
    Publication date: March 8, 2007
    Applicant: Everlight USA, Inc.
    Inventors: Jen-Fang Lin, Tzu-Kwei Sun, Hsiao-San Chen, Wen-Chin Lin