Patents by Inventor NICHOLAS CHARTRAIN

NICHOLAS CHARTRAIN 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).

  • COMPOSITIONS AND METHODS OF ADDITIVE MANUFACTURING OF AROMATIC THERMOPLASTICS AND ARTICLES MADE THEREFROM
    Publication number: 20230235187
    Abstract: Polymer resins for the vat photopolymerization of thermoplastics are provided, in particular for the vat photopolymerization of thermoplastics with exception thermal stability and mechanical properties. In some aspects, the polymer resins are prepared by ring opening of an aromatic dianhydride with an alcohol containing an acrylate or methacrylate to produce a photocrosslinkable diacid monomer; conversion of the photocrosslinkable diacid monomer to a photocrosslinkable diacyl chloride; and polymerization of the photocrosslinkable diacyl chloride with an aromatic diamine to produce a photocrosslinkable precursor polymer. Upon crosslinking and drying, a thermal imidization can yield aromatic polyimide polymers with high yield and with micron-scale structural resolution.
    Type: Application
    Filed: April 3, 2023
    Publication date: July 27, 2023
    Inventors: MARUTI HEGDE, TIMOTHY E. LONG, VISWANATH MEENAKSHISUNDARAM, CHRISTOPHER B. WILLIAMS, NICHOLAS CHARTRAIN
  • COMPOSITIONS AND METHODS OF ADDITIVE MANUFACTURING OF AROMATIC THERMOPLASTICS AND ARTICLES MADE THEREFROM
    Publication number: 20200248015
    Abstract: Polymer resins for the vat photopolymerization of thermoplastics are provided, in particular for the vat photopolymerization of thermoplastics with exception thermal stability and mechanical properties. In some aspects, the polymer resins are prepared by ring opening of an aromatic dianhydride with an alcohol containing an acrylate or methacrylate to produce a photocrosslinkable diacid monomer; conversion of the photocrosslinkable diacid monomer to a photocrosslinkable diacyl chloride; and polymerization of the photocrosslinkable diacyl chloride with an aromatic diamine to produce a photocrosslinkable precursor polymer. Upon crosslinking and drying, a thermal imidization can yield aromatic polyimide polymers with high yield and with micron-scale structural resolution.
    Type: Application
    Filed: August 17, 2017
    Publication date: August 6, 2020
    Inventors: MARUTI HEDGE, TIMOTHY E. LONG, VISWANATH MEENAKSHISUNDARAM, CHRISTOPHER B. WILLIAMS, NICHOLAS CHARTRAIN