Patents by Inventor Khateeta Emerson

Khateeta Emerson 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).

  • Synthesis of substituted prolines
    Patent number: 6350882
    Abstract: The instant invention is directed to a process for synthesizing substituted prolines, in particular, optically pure substituted prolines, which comprises the steps of: a) adding an unsubstituted or substituted proline alkali salt and an alkali halide to a solution of dialkylacylamidomalonate; and b) adding &agr;, &bgr; unsaturated aldehyde to produce an adduct.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: February 26, 2002
    Assignee: Merck & Co., Inc.
    Inventors: Khateeta Emerson, Guo-Jie Ho
  • Process for peptide segment condensation
    Patent number: 5773575
    Abstract: The present invention is drawn to a process for forming an amide bond linkage comprising reacting a carboxylic acid and an amine in a two-phase mixture of water and an organic solvent selected from an oxygenated organic solvent or an aromatic solvent in the presence of a coupling reagent and an additive. This process is useful for making ubiquitous amides and polypeptides having various biological activities.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: June 30, 1998
    Assignee: Merck & Co., Inc.
    Inventors: Guo-Jie Ho, David J. Mathre, Zhiguo Song, Khateeta Emerson
  • Process for peptide segment condensation
    Patent number: 5502165
    Abstract: The present invention is drawn to a process for forming an amide bond linkage comprising reacting a carboxylic acid and an amine in a two-phase mixture of water and an organic solvent selected from an oxygenated organic solvent or an aromatic solvent in the presence of a coupling reagent and an additive. This process is useful for making ubiquitous amides and polypeptides having various biological activities.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: March 26, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Guo-Jie Ho, David A. Mathre, Zhiguo Song, Khateeta Emerson