Patents by Inventor John A. Howarter

John A. 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).

  • Epoxy tannin reaction product compositions
    Patent number: 10899922
    Abstract: The present application generally relates to epoxy/tannin reaction product compositions, and methods of making and using the epoxy tannin reaction product compositions. The epoxy/tannin reaction product compositions are hardened thermosetting polymeric materials, are substantially homogeneous and substantially free of visible clumps, and have a glass transition temperature of at least 140° C.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: January 26, 2021
    Assignee: Purdue Research Foundation
    Inventors: Jeffrey Paul Youngblood, John A. Howarter, Matthew N. Korey
  • EPOXY TANNIN REACTION PRODUCT COMPOSITIONS
    Publication number: 20200010664
    Abstract: The present application generally relates to epoxy/tannin reaction product compositions, and methods of making and using the epoxy tannin reaction product compositions. The epoxy/tannin reaction product compositions are hardened thermosetting polymeric materials, are substantially homogeneous and substantially free of visible clumps, and have a glass transition temperature of at least 140° C.
    Type: Application
    Filed: February 27, 2018
    Publication date: January 9, 2020
    Applicant: Purdue Research Foundation
    Inventors: Jeffrey Paul Youngblood, John A. Howarter, Matthew N. Korey
  • Stimuli-Responsive Polymeric Surface Materials
    Publication number: 20090317621
    Abstract: A copolymer comprises a first monomer including a hydrophilic group and a hydrophobic group linked to the hydrophilic group, and a second monomer polymerized to the first monomer. The hydrophobic group is oil-repellant. A receding contact angle of a low surface energy fluid on the copolymer is greater than an advancing contact angle of a high surface energy fluid on the copolymer.
    Type: Application
    Filed: July 21, 2009
    Publication date: December 24, 2009
    Inventors: Jeffrey P. Youngblood, John A. Howarter
  • Stimuli-responsive polymeric surface materials
    Publication number: 20080146734
    Abstract: A copolymer comprises a first monomer including a hydrophilic group and a hydrophobic group linked to the hydrophilic group, and a second monomer polymerized to the first monomer. The hydrophobic group is oil-repellant. A receding contact angle of a low surface energy fluid on the copolymer is greater than an advancing contact angle of a high surface energy fluid on the copolymer.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 19, 2008
    Inventors: Jeffrey P. Youngblood, John A. Howarter