Patents by Inventor John Alan Howarter

John Alan Howarter 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).

  • Flame retardant resin
    Patent number: 11697702
    Abstract: The present disclosure provides to a novel flame retardant resin, wherein the resin is a reaction product of an epoxy material, a curing agent, and a partially esterified tannic acid of formula I, wherein TA represents a tannic acid moiety, R1 represents an optionally substituted C1-C6 straight or branched alkyl, an optionally substituted C3-C6 cyclic ring, an optionally substituted phenyl group, or any combination thereof, and n is 2-10.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: July 11, 2023
    Assignee: Purdue Research Foundation
    Inventors: Jeffrey Paul Youngblood, Matthew Korey, John Alan Howarter, Natalie Burgos
  • SEPARATIONS MEMBRANE AND METHOD OF MAKING THE SAME
    Publication number: 20230173437
    Abstract: The separations membrane system includes a substrate, a microporous layer, and a selective layer. The microporous layer may be disposed over the substrate. The selective layer may be disposed over the microporous layer, thereby sandwiching the microporous layer between the selective layer and the substrate. The microporous layer includes a thermoplastic material. The selective layer includes a polyamide structure of 2,2-Dimethyl-1,3-propanediamine and/or 1,3,5-Benzenetricarbonyl chloride.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 8, 2023
    Applicant: Purdue Research Foundation
    Inventors: John Alan Howarter, Michael D. Toomey, Logan Kearney
  • Methods and systems for treating emissions released during closed molding processes
    Patent number: 11486530
    Abstract: Methods and systems for treating emissions during a cured-in-place pipe (CIPP) closed molding process in which a resin-impregnated fibrous material is placed within an existing fluid conduit and cured in situ to seal an opening in the conduit. Such a method includes capturing multi-phase emissions released by a resin-impregnated fibrous material during curing thereof in a CIPP process, accumulating the multi-phase emissions, condensing at least a water portion of the multi-phase emissions, and treating vapor constituents of the multi-phase emissions.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: November 1, 2022
    Assignee: Purdue Research Foundation
    Inventors: Andrew James Whelton, John Alan Howarter, Brandon Emil Boor, Seyedeh Mahboobeh Teimouri Sendesi, Emily Conkling
  • NOVEL FLAME RETARDANT RESIN
    Publication number: 20210324129
    Abstract: The present disclosure provides to a novel flame retardant resin, wherein the resin is a reaction product of an epoxy material, a curing agent, and a partially esterified tannic acid of formula I, wherein TA represents a tannic acid moiety, R1 represents an optionally substituted C1-C6 straight or branched alkyl, an optionally substituted C3-C6 cyclic ring, an optionally substituted phenyl group, or any combination thereof, and n is 2-10.
    Type: Application
    Filed: February 15, 2021
    Publication date: October 21, 2021
    Applicant: Purdue Research Foundation
    Inventors: Jeffrey Paul Youngblood, Matthew Korey, John Alan Howarter, Natalie Burgos
  • METHODS AND SYSTEMS FOR TREATING EMISSIONS RELEASED DURING CLOSED MOLDING PROCESSES
    Publication number: 20210102655
    Abstract: Methods and systems for treating emissions during a cured-in-place pipe (CIPP) closed molding process in which a resin-impregnated fibrous material is placed within an existing fluid conduit and cured in situ to seal an opening in the conduit. Such a method includes capturing multi-phase emissions released by a resin-impregnated fibrous material during curing thereof in a CIPP process, accumulating the multi-phase emissions, condensing at least a water portion of the multi-phase emissions, and treating vapor constituents of the multi-phase emissions.
    Type: Application
    Filed: April 18, 2018
    Publication date: April 8, 2021
    Inventors: Andrew James Whelton, John Alan Howarter, Brandon Emil Boor, Seyedeh Mahboobeh Teimouri Sendesi, Emily Conkling
  • Phosphorylation of products for flame retardant applications
    Patent number: 9957443
    Abstract: Disclosed herein are flame retardant materials, and in particular materials and processes for phosphorylating materials for flame retardant applications.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: May 1, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Jeffrey Paul Youngblood, John Alan Howarter, Gamini Patrick Mendis
  • PHOSPHORYLATION OF PRODUCTS FOR FLAME RETARDANT APPLICATIONS
    Publication number: 20160230097
    Abstract: Disclosed herein are flame retardant materials, and in particular materials and processes for phosphorylating materials for flame retardant applications
    Type: Application
    Filed: February 5, 2016
    Publication date: August 11, 2016
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Jeffrey Paul Youngblood, John Alan Howarter, Gamini Patrick Mendis