Patents by Inventor Robert H. Lambeth

Robert H. Lambeth 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).

  • Publication number: 20210198427
    Abstract: Two-dimensional (2D) polymers and methods for their formation are described herein. To create oriented 2D polymer films, monomers are combined with processing additives within a solvent, creating a solution that can be cast and dried to remove the solvent and form a solid film. The methods can enable transformation of the monomers into oriented films. Film quality can be controlled via multiple processing parameters, including monomer and additive concentrations, shear and elongational flow rates during casting, evaporation rates, and post-process rinsing, buffering, stretching, and thermal treatments. By combining stiff carbon-containing cyclic polymer nodal units with more compliant linear polymer bridge units in an ordered, 2D repeating molecular structure it is possible to tailor the mechanical properties of 2D polymers and their assemblies to provide high stiffness, strength, and toughness.
    Type: Application
    Filed: March 8, 2021
    Publication date: July 1, 2021
    Inventors: David C. McLeod, Robert H. Lambeth, III, Kevin R. Waters, Emil J. Sandoz-Rosado, Eric D. Wetzel
  • Patent number: 10494485
    Abstract: Toughened polymeric materials and methods of forming toughened polymeric materials are provided herein. In some embodiments, a method of forming toughened polymeric materials may include preparing a branched polymeric additive; mixing the branched polymeric additive with a polymer to form a polymeric mixture, wherein the branched polymeric molecule either mixes and/or bonds with the polymer to reduce mobility in the polymer; and curing the polymeric mixture. In some embodiments, a toughened polymeric material comprises a polymer network; and a branched polymeric molecule bonded to the polymer network.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: December 3, 2019
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Randy A. Mrozek, Joseph L. Lenhart, Robert H. Lambeth, Jan W. Andzelm
  • Publication number: 20160200878
    Abstract: Toughened polymeric materials and methods of forming toughened polymeric materials are provided herein. In some embodiments, a method of forming toughened polymeric materials may include preparing a branched polymeric additive; mixing the branched polymeric additive with a polymer to form a polymeric mixture, wherein the branched polymeric molecule either mixes and/or bonds with the polymer to reduce mobility in the polymer; and curing the polymeric mixture. In some embodiments, a toughened polymeric material comprises a polymer network; and a branched polymeric molecule bonded to the polymer network.
    Type: Application
    Filed: November 9, 2015
    Publication date: July 14, 2016
    Inventors: RANDY A. MROZEK, JOSEPH L. LENHART, ROBERT H. LAMBETH, JAN W. ANDZELM
  • Patent number: 9181432
    Abstract: Toughened polymeric materials and methods of forming toughened polymeric materials are provided herein. In some embodiments, a method of forming toughened polymeric materials may include preparing a branched polymeric additive; mixing the branched polymeric additive with a polymer to form a polymeric mixture, wherein the branched polymeric molecule either mixes and/or bonds with the polymer to reduce mobility in the polymer; and curing the polymeric mixture. In some embodiments, a toughened polymeric material comprises a polymer network; and a branched polymeric molecule bonded to the polymer network.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 10, 2015
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Randy A. Mrozek, Joseph L. Lenhart, Robert H. Lambeth, Jan W. Andzelm
  • Publication number: 20130303712
    Abstract: Toughened polymeric materials and methods of forming toughened polymeric materials are provided herein. In some embodiments, a method of forming toughened polymeric materials may include preparing a branched polymeric additive; mixing the branched polymeric additive with a polymer to form a polymeric mixture, wherein the branched polymeric molecule either mixes and/or bonds with the polymer to reduce mobility in the polymer; and curing the polymeric mixture. In some embodiments, a toughened polymeric material comprises a polymer network; and a branched polymeric molecule bonded to the polymer network.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Applicant: The United States Government as Represented by the Secretary of the Army
    Inventors: RANDY A. MROZEK, Joseph L. Lenhart, Robert H. Lambeth, Jan W. Andzelm