Patents by Inventor Zhongqiang Liu

Zhongqiang Liu 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).

  • Patent number: 10400058
    Abstract: Disclosed are a resin composition, and prepreg, laminate and copper clad laminate using the same, and degrading method thereof, the resin composition comprising: an epoxy resin, a degradable amine curing agent, a degradable mercaptan curing agent and an inorganic filler. A copper clad laminate manufactured by the resin composition comprises several pieces of stacked prepreg, and copper foil arranged at one side or two sides of stacked prepreg, each of the prepreg comprising a reinforced material and the resin composition adhered thereon after soaking and drying. The present invention mixes the degradable amine curing agent and the degradable mercaptan curing agent to obtain a curing system having an adjustable reaction rate, thus facilitating process control when manufacturing the copper clad laminate, and the manufactured copper clad laminate has high overall performance and is completely degradable, thus recycling and reusing each of the effective components.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: September 3, 2019
    Assignee: SHENGYI TECHNOLOGY CO., LTD.
    Inventors: Huayang Deng, Zengbiao Huang, Qianfa Liu, Zhongqiang Yang, Peng Wang
  • Patent number: 9296843
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: March 29, 2016
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Publication number: 20140329967
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Application
    Filed: June 3, 2014
    Publication date: November 6, 2014
    Applicant: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Patent number: 8829154
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 9, 2014
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Publication number: 20140011956
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 9, 2014
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Patent number: 8551568
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: October 8, 2013
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Publication number: 20130030192
    Abstract: The inventors disclose here a novel, facile approach to the synthesis of acetonide-protected catechol-containing compounds having at least one amine group. In specific embodiments, the invention provides novel methods of synthesizing 3,4-dihydroxyphenylalanine (H-DOPA(acetonide)-OH (6)), Fmoc-protected H-DOPA(acetonide)-OH (Fmoc-DOPA(acetonide)-OH (7)), Fmoc-protected dopamine (Fmoc-dopamine(acetonide) (10)), TFA-protected dopamine (TFA-dopamine(acetonide) (13)) and acetonide-protected 4-(2-aminoethyl)benzene-1,2-diol (acetonide-protected dopamine (14)).
    Type: Application
    Filed: June 14, 2012
    Publication date: January 31, 2013
    Inventors: Phillip B. Messersmith, Bi-huang Hu, Zhongqiang Liu
  • Patent number: 8293867
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: October 23, 2012
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming
  • Patent number: 8227628
    Abstract: The inventors disclose here a novel, facile approach to the synthesis of acetonide-protected catechol-containing compounds having at least one amine group. In specific embodiments, the invention provides novel methods of synthesizing 3,4-dihydroxyphenylalanine (H-DOPA(acetonide)-OH (6)), Fmoc-protected H-DOPA(acetonide)-OH (Fmoc-DOPA(acetonide)-OH (7)), Fmoc-protected dopamine (Fmoc-dopamine(acetonide) (10)), TFA-protected dopamine (TFA-dopamine(acetonide) (13)) and acetonide-protected 4-(2-aminoethyl)benzene-1,2-diol (acetonide-protected dopamine (14)).
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: July 24, 2012
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Bi-huang Hu, Zhongqiang Liu
  • Publication number: 20100087622
    Abstract: The inventors disclose here a novel, facile approach to the synthesis of acetonide-protected catechol-containing compounds having at least one amine group. In specific embodiments, the invention provides novel methods of synthesizing 3,4-dihydroxyphenylalanine (H-DOPA(acetonide)-OH (6)), Fmoc-protected H-DOPA(acetonide)-OH (Fmoc-DOPA(acetonide)-OH (7)), Fmoc-protected dopamine (Fmoc-dopamine(acetonide) (10)), TFA-protected dopamine (TFA-dopamine(acetonide) (13)) and acetonide-protected 4-(2-aminoethyl)benzene-1,2-diol (acetonide-protected dopamine (14)).
    Type: Application
    Filed: July 9, 2009
    Publication date: April 8, 2010
    Applicant: Northwestern University
    Inventors: Phillip B. Messersmith, Bi-huang Hu, Zhongqiang Liu
  • Publication number: 20090123652
    Abstract: The present invention provides a simple, non-destructive and versatile method that enables layer-by-layer (LbL) assembly to be performed on virtually any substrate. A novel catechol-functionalized polymer which adsorbs to virtually all surfaces and can serve as a platform for LbL assembly in a surface-independent fashion is also provided.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 14, 2009
    Applicant: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee, Yuhan Lee, Zhongqiang Liu, Lesley Hamming