Patents by Inventor Edward M. Chait

Edward M. Chait 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 and method of purification of cyclic nucleotide derivatives
    Publication number: 20040186282
    Abstract: The present invention relates to methods for the synthesis and purification of cyclic nucleotide derivatives. The present invention provides a method for separating a cyclic nucleotide derivative from a mixture resulting from a chemical reaction to produce a cyclic nucleotide derivative from a cyclic nucleotide. In one embodiment, this mixture may comprise a cyclic nucleotide derivative, a pyridine solvent, and at least one of an alkyl carboxylic acid, an alkyl acid halide, or an alkyl carboxylic acid anhydride. In another embodiment, this mixture may comprise a cyclic nucleotide derivative and at least one of an alkyl carboxylic acid, an alkyl acid halide, or an alkyl carboxylic acid anhydride.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 23, 2004
    Inventors: Edward M. Chait, Seung-Yong Choi
  • Method and device for electrophoresis
    Patent number: 4483885
    Abstract: A thin film electropheretic device formed of layers with a substrate, electrodes on the substrate and a gel form over both.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: November 20, 1984
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Edward M. Chait, Mary L. Gianelli, Donald R. Johnson
  • Device for electrophoresis
    Patent number: 4443319
    Abstract: A thin film electropheretic device formed of layers with a substrate, electrodes on the substrate and a gel form over both.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 17, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward M. Chait, Mary L. Gianelli, Donald R. Johnson