Patents by Inventor Robert Joseph Nick

Robert Joseph Nick 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).

  • Solventless preparation of phthalimides
    Patent number: 6096900
    Abstract: A method for the solventless synthesis of a phthalimide or phthalimide mixture is provided comprising contacting at least one amine reactant and at least one anhydride reactant in a solventless environment at a first temperature sufficient to allow the reactants to at least partially condense; and increasing the temperature to a second temperature sufficient to melt the reaction mixture, thereby allowing the reaction to go essentially to completion and form the reaction product.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: August 1, 2000
    Assignee: General Electric Company
    Inventors: Robert Joseph Nick, Mark Erik Nelson, Joseph John Caringi, Drew Elliot Williams
  • Solventless preparation of phthalimides
    Patent number: 6066743
    Abstract: A method for the solventless synthesis of a phthalimide or phthalimide mixture is provided comprising contacting at least one amine reactant and at least one anhydride reactant in a solventless environment at a first temperature sufficient to allow the reactants to at least partially condense; and increasing the temperature to a second temperature sufficient to melt the reaction mixture, thereby allowing the reaction to go essentially to completion and form the reaction product.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: May 23, 2000
    Assignee: General Electric Company
    Inventors: Robert Joseph Nick, Mark Erik Nelson, Joseph John Caringi, Drew Elliot Williams
  • Quaternary bisphenolates, methods for their preparation, and uses thereof
    Patent number: 5969086
    Abstract: Quaternary salts having a double helix structure are prepared by the reaction of dihydroxyaromatic compound, preferably a bisphenol, with an alkali metal hydroxide and a quaternary salt, such as a tetraalkylammonium or hexaalkylguanidinium chloride. The quaternary salts and their alkaline hydrolysis products are useful as catalysts in various reactions, including imide formation from bisphenol salts and halo- or nitro-substituted phthalimides and redistribution and equilibration of polycarbonates.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: October 19, 1999
    Assignee: General Electric Company
    Inventors: Jimmy Lynn Webb, Thomas Link Guggenheim, Robert Joseph Nick, Patrick Joseph McCloskey, Joseph Anthony King, Jr.
  • Quaternary bisphenolates, methods for their preparation, and uses thereof
    Patent number: 5756843
    Abstract: Quaternary salts having a double helix structure are prepared by the reaction of dihydroxyaromatic compound, preferably a bisphenol, with an alkali metal hydroxide and a quaternary salt, such as a tetraalkylammonium or hexaalkylguanidinium chloride. The quaternary salts and their alkaline hydrolysis products are useful as catalysts in various reactions, including imide formation from bisphenol salts and halo- or nitro-substituted phthalimides and redistribution and equilibration of polycarbonates.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: May 26, 1998
    Assignee: General Electric Company
    Inventors: Jimmy Lynn Webb, Matthew Hal Littlejohn, Joseph John Caringi, Thomas Link Guggenheim, Robert Joseph Nick, Patrick Joseph McCloskey, Joseph Anthony King, Jr.