Patents by Inventor Hsuen-Tseng Chang

Hsuen-Tseng Chang 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).

  • Biodegradable hyaluronic acid derivative
    Patent number: 8425931
    Abstract: The description provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: April 23, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Biodegradable hyaluronic acid derivative, biodegradable polymeric micelle composition and pharmaceutical or bioactive composition
    Patent number: 8313765
    Abstract: The invention provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: November 20, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Biodegradable Hyaluronic Acid Derivative
    Publication number: 20120283429
    Abstract: The description provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Amphiphilic block copolymers and nano particles comprising the same
    Patent number: 8124128
    Abstract: An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: February 28, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin, Yuan-Hung Hsu
  • Biodegradable Hyaluronic Acid Derivative, Biodegradable Polymeric Micelle Composition and Pharmaceutical or Bioactive Composition
    Publication number: 20100316682
    Abstract: The invention provides a biodegradable hyaluronic acid derivative including at least one modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group, and p is an integer of 1 to 4.
    Type: Application
    Filed: August 20, 2010
    Publication date: December 16, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • Biodegradable hyaluronic acid derivative and biodegradable polymeric micelle composition
    Patent number: 7780982
    Abstract: A biodegradable hyaluronic acid derivative comprising a modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group or a prepolymer, and p is an integer of 1 to 4. The biodegradable hyaluronic acid derivative when dissolved in a hydrophilic medium can form micelles and can be used to entrap a pharmaceutically active or bioactive molecule.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: August 24, 2010
    Assignee: Industrial Technology Research Instittute
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu
  • AMPHIPHILIC BLOCK COPOLYMERS AND NANOPARTICLES COMPRISING THE SAME
    Publication number: 20080166382
    Abstract: An amphiphilic block copolymer is disclosed. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nanoparticle and carrier including the amphiphilic block copolymer for delivery of water insoluble drugs, growth factors, genes, or water insoluble cosmetic substances.
    Type: Application
    Filed: March 21, 2008
    Publication date: July 10, 2008
    Inventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen
  • Amphiphilic block copolymers and nano particles comprising the same
    Publication number: 20070104654
    Abstract: An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 10, 2007
    Inventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin
  • Biodegradable hyaluronic acid derivative and biodegradable polymeric micelle composition
    Publication number: 20050123505
    Abstract: A biodegradable hyaluronic acid derivative comprising a modified hyaluronic acid repeating unit represented by the formula (HA)-[O(C?O)NH-M]p, wherein HA is a unit including N-acetyl-D-glucosamine and D-glucuronic acid, M is a modifying moiety containing a C2-16 hydrocarbyl group or a prepolymer, and p is an integer of 1 to 4. The biodegradable hyaluronic acid derivative when dissolved in a hydrophilic medium can form micelles and can be used to entrap a pharmaceutically active or bioactive molecule.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 9, 2005
    Inventors: Jui-Hsiang Chen, Bin-Hong Tsai, Hsuen-Tseng Chang, Muh-Lan Chen, Yu-Hua Chen, Shu-Hua Jan, Mei-Jung Liu