Patents by Inventor Luis A. Chu

Luis A. Chu 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: 8183417
    Abstract: A process for purifying 1,3-propanediol from the fermentation broth of a cultured E. coli that has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 22, 2012
    Assignees: E. I. du Pont de Nemours and Company, Tate & Lyle Ingredients Americas LLC
    Inventors: Dennis N. Adkesson, Albert W. Alsop, Tyler T. Ames, Luis A. Chu, James M. Disney, Bryan C. Dravis, Patrick Fitzgibbon, James M. Gaddy, F. Glenn Gallagher, William F. Lehnhardt, Jefferson C. Lievense, Michael L. Luyben, Mayis Seapan, Robert E. Trotter, Gregory M. Wenndt, Eugene K. Yu
  • Patent number: 6893996
    Abstract: A process for preparing a hydrocyanation catalyst comprising contacting a bidentate phosphorous-containing ligand with a molar excess of nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel. Preferably, the nickel chloride is dried before use.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: May 17, 2005
    Assignee: Invista North America S.A.R.L.
    Inventors: Luis A. Chu, Lucy M. Clarkson, Norman Herron, Ronald J. McKinney, Kenneth G. Moloy, Zeru Tekie
  • Publication number: 20040092767
    Abstract: Process for producing an aqueous solution comprising adipic acid, hydroxyhexanoic acid and oligomers thereof.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 13, 2004
    Inventors: Luis A. Chu, Ludovic Fodor, David L. Valdez
  • Publication number: 20030100442
    Abstract: A process for preparing a hydrocyanation catalyst comprising contacting a bidentate phosphorous-containing ligand with a molar excess of nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel. Preferably, the nickel chloride is dried before use.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 29, 2003
    Inventors: Luis A. Chu, Lucy M. Clarkson, Norman Herron, Ronald J. Mckinney, Kenneth G. Moloy, Zeru Tekie