Patents by Inventor Chi-Jen Du

Chi-Jen Du 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).

  • Publication number: 20060257981
    Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.
    Type: Application
    Filed: July 15, 2003
    Publication date: November 16, 2006
    Applicant: Optimer Pharmaceuticals, Inc.
    Inventors: Youe-Kong Shue, Chi-Jen Du, Ming-Hsi Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin Okumu, Jonathan Duffield
  • Publication number: 20060105443
    Abstract: This invention is related to a process for isolating and purifying lycopene, and more particularly to a process for large-scaled isolation and purification of the biosynthesized lycopene from bacterial cells via simple steps with high purity and recovery. The steps in the process of the present invention comprises: isolating a biomass from a fermented broth; treating the isolated biomass with alcohol; extracting the lycopene from the alcohol treated biomass with an organic solvent; removing the solid phase from the biomass/solvent extracting mixture; filtering the liquid-phase extract; crystallizing the lycopene by concentrating the liquid-phase extract; separating the dark red lycopene crystals; re-suspending the separated dark red lycopene crystals with acetone; and separating and drying the washed lycopene crystals. A biosynthesized lycopene purified by the process is also provided.
    Type: Application
    Filed: November 15, 2004
    Publication date: May 18, 2006
    Inventors: Yan-Chu Wu, Yuan-Ting Chen, Chun-Yen Liu, Mei-Chiao Wu, Yi Lu, Ming-Hsi Chiou, Chi-Jen Du