Patents by Inventor Kung-Hsiang Yang

Kung-Hsiang Yang 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).

  • Stable biodegradable, high water absorbable polyglutamic acid hydrogel by 3-dimensional cross-linking and its preparation method
    Patent number: 7790417
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro gro
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: September 7, 2010
    Assignee: Tung Hai Biotechnology Corporation
    Inventors: Guan-Heui Ho, Tou-Hsiung Yang, Kung-Hsiang Yang
  • Stable biodegradable, high water absorbable ?-polyglutamic acid hydrogel by 3-dimensional cross-linking and its preparation method
    Patent number: 7759088
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro gro
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: July 20, 2010
    Assignee: Tung Hai Biotechnology Corporation
    Inventors: Guan-Heui Ho, Tou-Hsiung Yang, Kung-Hsiang Yang
  • STABLE BIODEGRADABLE, HIGH WATER ABSORBABLE POLYGLUTAMIC ACID HYDROGEL BY 3-DIMENSIONAL CROSS-LINKING AND ITS PREPARATION METHOD
    Publication number: 20080160569
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro gro
    Type: Application
    Filed: March 13, 2008
    Publication date: July 3, 2008
    Applicant: TUNG HAI BIOTECHNOLOGY CORPORATION
    Inventors: Guan-Heui Ho, Tou-Hsiung Yang, Kung-Hsiang Yang
  • STABLE BIODEGRADABLE, HIGH WATER ABSORBABLE POLYGLUTAMIC ACID HYDROGEL BY 3-DIMENSIONAL CROSS-LINKING AND ITS PREPARATION METHOD
    Publication number: 20080161605
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro gro
    Type: Application
    Filed: March 13, 2008
    Publication date: July 3, 2008
    Applicant: TUNG HAI BIOTECHNOLOGY CORPORATION
    Inventors: Guan-Huei Ho, Tou-Hsiung Yang, Kung-Hsiang Yang
  • Stable biodegradable, high water absorbable polyglutamic acid hydrogel by 3-dimensional cross-linking and its preparation method
    Patent number: 7364879
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro gr
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: April 29, 2008
    Assignee: Tung Hai Biotechnology Corporation
    Inventors: Guan-Huei Ho, Tou-Hsiung Yang, Kung-Hsiang Yang
  • Stable biodegradable, high water absorbable gramma-polyglumatic acid hydrogel by 3-dimensional cross-linking and its preparation method
    Publication number: 20050136516
    Abstract: The present invention relates to a method for the production of a stable biodegradable, high water absorbable ?-polyglutamic acid (?-PGA) hydrogel by directly cross-linking (A) a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof; and/or (B) a microbial culture broth containing a ?-polyglutamic acid (?-PGA), a ?-polyglutamate, or a mixture thereof, and optionally a polysaccharide containing a carboxylic and/or carboxylate group, an amino acid, or a mixture thereof, with a cross-linker comprising a compound having three or more functional groups or a mixture of a compound having three or more functional groups and a compound having two functional groups, wherein each of the functional groups can react with a carboxylic group (—COOH), carboxylate group (—COO?), aldehyde group (—CHO), hydroxyl (—OH), carbonyl group (—CO), sulfone group (—SO2), amino group (—NH2) or nitro group
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Guan-Huei Ho, Tou-Hsiung Yang, Kung-Hsiang Yang