Patents by Inventor Tsung C. Chang

Tsung C. 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).

  • Patent number: 6699679
    Abstract: The present invention provides a method for rapid identification of Bacillus Cereus comprising utilizing an antibody specific to a certain surface antigen of B. cereus, and the kit for performing the method.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: March 2, 2004
    Assignee: Food Industry Research and Development Institute
    Inventors: Chi Hua Chen, Tsung C. Chang, Hwia C. Ding
  • Publication number: 20030228572
    Abstract: A method of determining the efficacy of a compound in treating a subject infected with a microbe, or a method of determining the minimum inhibitory concentration of an antimicrobial agent against a microbe. The method involves the measurement of an electrical parameter of a culture of the microbe.
    Type: Application
    Filed: April 11, 2003
    Publication date: December 11, 2003
    Inventors: Tsung C. Chang, Jiunn Jong Wu, Ay Huei Huang, Jin Hwa Dai, Jen Jih Tsen
  • Publication number: 20020146752
    Abstract: The present invention provides a method for rapid identification of Bacillus Cereus comprising utilizing an antibody specific to a certain surface antigen of B. cereus, and the kit for performing the method.
    Type: Application
    Filed: December 17, 2001
    Publication date: October 10, 2002
    Applicant: FOOD INDUSTRY RESEARCH AND DEVELOPMENT INSTITUTE
    Inventors: Chi Hua Chen, Tsung C. Chang, Hwia C. Ding
  • Patent number: 6428976
    Abstract: A method of determining whether a test microorganism is a known microorganism, involving use of an agent that specifically affects the growth of the known microorganism. The invention also features a method of identifying E. coli O157:H7 that are based on following criteria: a test microorganism is E. coli O157:H7 if the microorganism is (i) E. coli, (ii) incapable of fermenting sorbitol, and (iii) susceptible to infection by AR1 phage.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: August 6, 2002
    Assignee: Food Industry Research and Development Institute
    Inventors: Tsung C. Chang, Shiowwen Chen, Hwia C. Ding
  • Patent number: 6210911
    Abstract: A method of determining whether a test microorganism is a known microorganism, involving use of an agent that specifically affects the growth of the known microorganism. The invention also features a method of identifying E. coli O157:H7 that are based on the following criteria: a test microorganism is E. coli O157:H7 if the microorganism is (i) E. coli, (ii) incapable of fermenting sorbitol, and (iii) susceptible to infection by AR1 phage.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: April 3, 2001
    Assignee: Food Industry Research and Development Institute
    Inventors: Tsung C. Chang, Shiowwen Chen, Hwia C. Ding
  • Patent number: 5612186
    Abstract: An enzyme-capture assay (ECA) for rapid identification of Escherichia coli (E. coli) in clinical samples comprising contacting a clinical sample which is suspected to contain E. coli with an immobilized antibody against .beta.-D-glucuronidase which then catalyzes an enzyme substrate to produce a fluorescent product is disclosed.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: March 18, 1997
    Assignee: Food Industry Research and Development Institute
    Inventors: Shiu W. Huang, Jiunn J. Wu, Tsung C. Chang
  • Patent number: 5591599
    Abstract: A method for determining the possible presence of an antimicrobial compound in a sample. The method includes the steps of: (i) adding the sample to a culture medium; (ii) growing a microorganism in the culture medium, the growth of the microorganism being susceptible to inhibition by the compound; (iii) measuring an electrical parameter of the culture medium over a period of time; (iv) determining a first time point at which an accelerating change of the electrical parameter occurs, the change resulting from the growth of the microorganism; and (v) comparing the first time point with a plurality of time points to determine the possible presence of the compound. Each of the plurality of time points is determined in a manner identical to that in which the first time point is determined except that the compound is present in the culture medium at a known concentration, and, further, a relationship exists between the plurality of time points and their corresponding concentrations.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: January 7, 1997
    Assignee: Food Industry Research and Development Institute
    Inventors: Tsung C. Chang, Hui C. Chen
  • Patent number: 5418140
    Abstract: A method for rapid identification of Vibrio parahaemolyticus in a sample containing suspect colonies which includes the steps of:(i) coating latex particles with a solution of antibodies or antisera against outer membrane proteins of V. parahaemolyticus at an appropriate concentration to obtain a latex reagent, and(ii) mixing the sample with the latex reagent obtained in the (i) under conditions appropriate to complete agglutination; and a kit for accomplishing the method are disclosed.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: May 23, 1995
    Assignee: Food Industry Research and Development Institute
    Inventors: Tsung C. Chang, Hui C. Chen