Patents by Inventor Elbridge A. O'Neil, Jr.

Elbridge A. O'Neil, Jr. 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).

  • Storage stable polyimide precursor solutions and method of preparation
    Patent number: 4960824
    Abstract: Storage stable polyimide precursors are prepared from diesters of certain tetracarboxylic acids, including pyromellitic acid and 2,2-bis[4-(3,4-dicarboxyphenoxy)-phenyl]propane, and m-phenylenediamine, p-phenylenediamine, 4-aminophenyl ether or mixtures thereof. These polyimide precursors may be cured to form flexible polyimides useful in composite preparation.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: October 2, 1990
    Assignee: General Electric Company
    Inventors: Daniel R. Olson, Elbridge A. O'Neil, Jr.
  • Zinc borate as a smoke suppressant
    Patent number: 4833190
    Abstract: Zinc borate is added to high hydrocarbon content silicone containing compositions to reduce smoke emission.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: May 23, 1989
    Assignee: General Electric Company
    Inventors: James A. Cella, Elbridge A. O'Neil, Jr., David A. Williams
  • Bis-quaternary salts as phase transfer catalysts for aromatic ether imide preparation
    Patent number: 4554357
    Abstract: Bis-quaternary ammonium and phosphonium salts such as bis(tri-n-butyl)-1,6-hexylenediammonium dibromide are excellent phase transfer agents for the preparation of aromatic ether imides, as by the reaction of the disodium salt of bisphenol A with 4-nitro-N-methylphthalimide.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: November 19, 1985
    Assignee: General Electric Company
    Inventors: John W. Verbicky, Jr., Elbridge A. O'Neil, Jr.
  • Method for making aromatic etherimides
    Patent number: 4476309
    Abstract: A method for making aromatic ether imides is provided by effecting the displacement of reactive radicals on a phthalimide nucleus with a mono- or bis-alkali metal phenoxide in the presence of a nonpolar solvent and a phase transfer catalyst, such as a triorganoborate. The aromatic ether imide made by the present invention are useful intermediates for making aromatic ether anhydrides and aromatic bis(ether anhydrides).
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: October 9, 1984
    Assignee: General Electric Company
    Inventors: John W. Verbicky, Jr., Elbridge A. O'Neil, Jr.
  • Method for making aromatic bis(etherimide)s
    Patent number: 4467097
    Abstract: A method is provided for making aromatic bis(etherimide)s by effecting reaction between an aromatic bisphenoxide salt and a nitro-substituted N-alkyl phthalimide in the presence of a non-polar organic solvent and an effective amount of a phase transfer catalyst. There is utilized as the phase transfer catalyst, a mixture of a dipolar aprotic solvent and a polyvalent metal salt such as zinc chloride.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: August 21, 1984
    Assignee: General Electric Company
    Inventors: John W. Verbicky, Jr., James A. Cella, Elbridge A. O'Neil, Jr.