Patents by Inventor Tzu-Chih Chen

Tzu-Chih Chen 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).

  • Fast method of transforming competent cells
    Patent number: 7098033
    Abstract: A fast method of transforming competent cells is described. The competent cells are thawed at room temperature or in a water bath. Plasmid DNAs and competent cells are mixed together, then the mixture is subject to heat shock treatment. After plating the mixture on a low-temperature selective medium by a low-temperature plating tool, the competent cells are cultured on the selective medium.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: August 29, 2006
    Assignee: Yeastern Biotech Co., Ltd.
    Inventors: Tzu-Chih Chen, Wei-Ni Hua
  • Nucleic acid encoding recombinant salmon calcitonin, expression vector thereof, and method for producing recombinant salmon calcitonin therewith
    Patent number: 7087739
    Abstract: Nucleic acid encoding recombinant salmon calcitonin, expression vector thereof, and method for producing recombinant salmon calcitonin therewith. The nucleic acid encoding recombinant salmon calcitonin comprises the sequence of SEQ ID No. 2.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: August 8, 2006
    Assignee: Industrial Technology Research Institute
    Inventors: Shuai-Jan Hu, Tzu-Chih Chen
  • Process for producing poly-unsaturated fatty acids by oleaginous yeasts
    Publication number: 20050266537
    Abstract: The present invention is directed to a process of producing novel fatty acids in oleaginous yeast by producing oleaginous yeast by introducing into the yeast genes coding for enzymes selected from the group consisting of D5-desaturase, D6-desaturase, D12-desaturase, D15-desaturase and elongase; and culturing the yeast in the medium containing high levels of carbon sources. The present invention is further directed to a residue or fatty acid that is obtained from pressing the oleaginous yeast produced by the process of the invention.
    Type: Application
    Filed: May 6, 2005
    Publication date: December 1, 2005
    Applicant: Yeastern Biotech Co., Ltd.
    Inventor: Tzu-Chih Chen
  • Fast method of transforming competent cells
    Publication number: 20050130289
    Abstract: A fast method of transforming competent cells is described. The competent cells are thawed at room temperature or in a water bath. Plasmid DNAs and competent cells are mixed together, then the mixture is subject to heat shock treatment. After plating the mixture on a low-temperature selective medium by a low-temperature plating tool, the competent cells are cultured on the selective medium.
    Type: Application
    Filed: January 26, 2005
    Publication date: June 16, 2005
    Inventors: Tzu-Chih Chen, Wei-Ni Hua
  • Fast method of transforming competent cells
    Patent number: 6864088
    Abstract: A fast method of transforming competent cells is described. The competent cells are thawed at room temperature or in a water bath. Plasmid DNAs and competent cells are mixed together, then the mixture is subject to heat shock treatment. After plating the mixture on a low-temperature selective medium by a low-temperature plating tool, the competent cells are cultured on the selective medium.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: March 8, 2005
    Assignee: Yeastern Biotech Co., Ltd.
    Inventors: Tzu-Chih Chen, Wei-Ni Hua
  • Nucleic acid encoding recombinant salmon calcitonin, expression vector thereof, and method for producing recombinant salmon calcitonin therewith
    Publication number: 20040132138
    Abstract: Nucleic acid encoding recombinant salmon calcitonin, expression vector thereof, and method for producing recombinant salmon calcitonin therewith. The nucleic acid encoding recombinant salmon calcitonin comprises the sequence of SEQ ID No.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 8, 2004
    Inventors: Shuai-Jan Hu, Tzu-Chih Chen
  • Fast method of transforming competent cells
    Publication number: 20030138956
    Abstract: A fast method of transforming competent cells is described. The competent cells are thawed at room temperature or in a water bath. Plasmid DNAs and competent cells are mixed together, then the mixture is subject to heat shock treatment. After plating the mixture on a low-temperature selective medium by a low-temperature plating tool, the competent cells are cultured on the selective medium.
    Type: Application
    Filed: May 29, 2002
    Publication date: July 24, 2003
    Inventors: Tzu-Chih Chen, Wei-Ni Hua