Patents by Inventor Weiyu Fan

Weiyu Fan 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).

  • CHITOSAN PRODUCTION
    Publication number: 20090099347
    Abstract: The invention provides a method of producing chitosan using pressures greater than 0 PSIG. The invention also provides fungal chitosan compositions.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 16, 2009
    Inventors: James R. Trinkle, Ki-Oh Hwang, Weiyu Fan
  • Chitosan production
    Patent number: 7488812
    Abstract: The invention provides a method of producing chitosan using pressures greater than 0 PSIG. The invention also provides fungal chitosan compositions.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: February 10, 2009
    Assignee: Cargill, Incorporated
    Inventors: James R. Trinkle, Ki-Oh Hwang, Weiyu Fan
  • Chitosan and method of preparing chitosan
    Patent number: 7413881
    Abstract: A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: August 19, 2008
    Assignee: Cargill, Incorporated
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Glucosamine and method of making glucosamine from microbial biomass
    Patent number: 7049433
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: May 23, 2006
    Assignee: Cargill, Incorporated
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Chitosan and method of preparing chitosan
    Patent number: 6972284
    Abstract: A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: December 6, 2005
    Assignee: Cargill, Incorporated
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Chitosan and method of preparing chitosan
    Publication number: 20050245482
    Abstract: A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
    Type: Application
    Filed: June 15, 2005
    Publication date: November 3, 2005
    Inventors: Weiyu Fan, John Bohlmann, James Trinkle, James Steinke, Ki-Oh Hwang, Joseph Henning
  • Chitosan production
    Publication number: 20050215774
    Abstract: The invention provides a method of producing chitosan using pressures greater than 0 PSIG. The invention also provides fungal chitosan compositions.
    Type: Application
    Filed: April 2, 2003
    Publication date: September 29, 2005
    Inventors: Jamea Trinkle, Ki-Oh Hwang, Weiyu Fan
  • Glucosamine and method of making glucosamine from microbial biomass
    Publication number: 20030181419
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 25, 2003
    Inventors: Ki-Oh Hwang, James Donald Steinke, Joseph P. Henning, John A. Bohlmann, James R. Trinkle, Weiyu Fan
  • Glucosamine and method of making glucosamine from microbial biomass
    Publication number: 20030148998
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 7, 2003
    Applicant: Cargill, Incorporated
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Glucosamine and method of making glucosamine from microbial blomass
    Publication number: 20020115639
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Application
    Filed: February 16, 2001
    Publication date: August 22, 2002
    Inventors: Weiyu Fan, John A. Bohlman, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Chitosan and method of preparing chitosan
    Publication number: 20020025945
    Abstract: A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
    Type: Application
    Filed: December 18, 2000
    Publication date: February 28, 2002
    Inventors: Weiyu Fan, John A. Bohlmann, James R. Trinkle, James Donald Steinke, Ki-Oh Hwang, Joseph P. Henning
  • Glucosamine and method of making glucosamine from microbial biomass
    Patent number: H2218
    Abstract: Glucosamine suitable for human or animal consumption is disclosed. The glucosamine is derived from microbial biomass containing chitin. Suitable starting materials include substantially uniform microbial fungal sources, such as fungal sources derived from Aspergillus sp., Penicillium sp., Mucor sp. and combinations thereof. Methods of producing glucosamine by acid hydrolysis of fermented fungal biomass are also disclosed.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: June 3, 2008
    Inventors: Ki-Oh Hwang, James Donald Steinke, Joseph P. Henning, John A. Bohlmann, James R. Trinkle, Weiyu Fan