Patents Represented by Attorney Gerald E. Deitch

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  • Environmentally friendly process for the hydrogenation of dinitriles
    Patent number: 6376714
    Abstract: Process for converting a dinitrile to a diamine and optionally an aminonitrile, in which a Group VIII element catalyst is treated with a modifier either before or during a substantially solvent-free hydrogenation reaction in which the dinitrile is contacted with hydrogen in the presence of the catalyst.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 23, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alan M. Allgeier, Theodore A. Koch, Sourav K. Sengupta
  • Organoboron waste stream treatment using hydrogen peroxide
    Patent number: 6372147
    Abstract: A process for the treatment of aqueous waste streams having a pH of 5 to 11 and containing organoboron compounds of the formula R4B−1M+ with hydrogen peroxide in order to convert such organoboron compounds to boric acid and organic compounds.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ronald A. Reimer
  • Production of 6-aminocaproic acid
    Patent number: 6372939
    Abstract: A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and 5-cyanovaleric acid; hydrogenating the resulting product to produce 6-aminocaproic acid, 5-amino-4-methylvaleric acid, and 4-amino-3-ethylbutyric acid; and isolating 6-aminocaproic acid from the reaction product. The resulting 6-aminocaproic acid can be cyclized to produce caprolactam.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: April 16, 2002
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Theodore A. Koch, Ronnie Ozer, Sourav K. Sengupta
  • Monoclonal antibodies reactive with shared idiotypes on human antibodies to native DNA from patients with systemic lupus erythematosus
    Patent number: 4692416
    Abstract: The invention relates to monoclonal anti-idiotypic antibodies to human anti-DNA antibodies. Monoclonal, anti-idiotypic antibodies are produced using hybridoma technology. The antibodies are used as diagnostic reagents in methods to determine the presence of anti-native DNA antibodies in serum from patients suspected of having systemic lupus erythematosus.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: September 8, 1987
    Assignee: Yeshiva University
    Inventor: Betty A. Diamond
  • Method for the rapid detection of virus and viral antigens
    Patent number: 4581331
    Abstract: A method for the rapid detection of virus and viral antigens associated with somatic cells in biological test samples is disclosed. The method comprises lysing the cells with a lytic agent to reveal virus or viral antigens for participation in a virus detection system. The lytic agent is chosen for its biological neutrality in the detection system, particularly its inability to produce a cytopathic effect in tissue culture.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: April 8, 1986
    Assignees: E. I. Du Pont de Nemours and Company, Board of Trustees
    Inventors: James C. Richards, Dennis L. Murray
  • Heterogeneous immunoassay for digoxin using ouabain as a separation means
    Patent number: 4551426
    Abstract: A heterogeneous immunoassay for digoxin. An excess of labeled anti-digoxin antibody is added to a test sample and the resulting reaction mixture is contacted with a solid phase having ouabain immobilized thereon. All the free, labeled antibody binds to the oubain. The eluted digoxin anti-digoxin antibody complex is measured for label activity. A competitive mode is also disclosed.
    Type: Grant
    Filed: January 18, 1984
    Date of Patent: November 5, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William J. Freytag, Shung-Ho Chang