Patents by Inventor Greg Curtzwiler

Greg Curtzwiler 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: 20210292623
    Abstract: The present application relates to polyurethane polymers produced by polymerizing a reactant mixture comprising triglycerides of Physaria fendleri, one or more polyisocyanates, and one or more polyols, wherein the triglycerides of Physaria fendleri have a hydroxyl value ranging from 90 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri to 250 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri. The present application also relates to polyester polymers produced by polymerizing a reactant mixture comprising triglycerides of Euphorbia Lagascae, and one or more dicarboxylic acids. Also disclosed are the methods of formation of the polyurethane and polyester polymers, and their use as adhesives.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Inventors: Greg CURTZWILER, Keith VORST, Alexandra IVEY, Sharan RAMAN
  • Patent number: 10954053
    Abstract: The present invention relates to relates to a method of optimizing a plastic composition formed from a plurality of resin feedstocks. A plurality of resin feedstocks are provided. The plurality of resin feedstocks are blended to form the plastic composition. One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, radiation fluorescence, or melting properties, are measured. The ratio of the plurality of resin feedstocks being blended into the plastic composition is adjusted, based on said measuring, to form an optimized plastic composition. A system for performing the method is also disclosed.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: March 23, 2021
    Assignees: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC., CAL POLY CORPORATION
    Inventors: Keith Vorst, John Wyatt Brown, Jeffrey E. Danes, Greg Curtzwiler
  • Publication number: 20190248566
    Abstract: The present invention relates to relates to a method of optimizing a plastic composition formed from a plurality of resin feedstocks. A plurality of resin feedstocks are provided. The plurality of resin feedstocks are blended to form the plastic composition. One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, radiation fluorescence, or melting properties, are measured. The ratio of the plurality of resin feedstocks being blended into the plastic composition is adjusted, based on said measuring, to form an optimized plastic composition. A system for performing the method is also disclosed.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 15, 2019
    Inventors: Keith Vorst, John Wyatt Brown, Jeffrey E. Danes, Greg Curtzwiler
  • Patent number: 10316183
    Abstract: The present invention relates to relates to a method of optimizing a plastic composition formed from a plurality of resin feedstocks. A plurality of resin feedstocks are provided. The plurality of resin feedstocks are blended to form the plastic composition. One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, radiation fluorescence, or melting properties, are measured. The ratio of the plurality of resin feedstocks being blended into the plastic composition is adjusted, based on said measuring, to form an optimized plastic composition. A system for performing the method is also disclosed.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 11, 2019
    Assignees: Iowa State University Research Foundation, Inc., Cal Poly Corporation
    Inventors: Keith Vorst, John Wyatt Brown, Jeffrey E. Danes, Greg Curtzwiler
  • Publication number: 20170298219
    Abstract: The present invention relates to relates to a method of optimizing a plastic composition formed from a plurality of resin feedstocks. A plurality of resin feedstocks are provided. The plurality of resin feedstocks are blended to form the plastic composition. One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, radiation fluorescence, or melting properties, are measured. The ratio of the plurality of resin feedstocks being blended into the plastic composition is adjusted, based on said measuring, to form an optimized plastic composition. A system for performing the method is also disclosed.
    Type: Application
    Filed: April 19, 2017
    Publication date: October 19, 2017
    Inventors: Keith Vorst, John Wyatt Brown, Jeffrey E. Danes, Greg Curtzwiler
  • Patent number: 9638683
    Abstract: A system and a method for determining a percentage of recycled polyethylene terephthalate present in a test sample includes selecting a contaminant from a set of known contaminants. At least one predictor analyzes is identified from a group of predictor analyzes as being a statistically independent predictor analyzes of a presence of the selected contaminant. Predicting a percent recycled polyethylene terephthalate, identifying at least one set of best subsets of the statistically independent predictor analyzes of percent recycled polyethylene terephthalate and refining a percent recycled polyethylene terephthalate statistical model to a final predicted percent recycled polyethylene terephthalate model.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 2, 2017
    Inventors: Jeffrey E. Danes, Keith Vorst, Greg Curtzwiler
  • Publication number: 20140278142
    Abstract: A system and a method for determining a percentage of recycled polyethylene terephthalate present in a test sample includes selecting a contaminant from a set of known contaminants. At least one predictor analyses is identified from a group of predictor analyses as being a statistically independent predictor analyses of a presence of the selected contaminant. Predicting a percent recycled polyethylene terephthalate, identifying at least one set of best subsets of the statistically independent predictor analyses of percent recycled polyethylene terephthalate and refining a percent recycled polyethylene terephthalate statistical model to a final predicted percent recycled polyethylene terephthalate model.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: Cal Poly Corporation
    Inventors: Jeffrey E. Danes, Keith Vorst, Greg Curtzwiler
  • Publication number: 20120296572
    Abstract: A system for predicting the amount of VOCs in an extruded product includes a container holding a gaseous sample, a detector in communication with the container for analyzing the gaseous sample, and a processor in communication with the detector and programmed to analyze the data from the detector and predict the amount of VOCs in an extruded product. A method of predicting an amount of extractable volatile organic compounds in an extruded product includes delivering a sample of gas from an intermediate stage in an extrusion process to a detector, analyzing the sample of gas using the detector to obtain data about the amount of VOCs in the sample of gas, delivering the data to a processor, comparing the data to control data to generate comparison data, and predicting the amount of extractable VOCs in the extruded product.
    Type: Application
    Filed: March 23, 2012
    Publication date: November 22, 2012
    Inventors: Jeff Hess, John Story, Larry Gorman, Greg Curtzwiler, Keith Vorst
  • Patent number: 8063374
    Abstract: A system and method of identifying a reference standard library for thermoplastic content includes preparing a plurality of samples of each one of a plurality of known ratios of virgin thermoplastic/recycled thermoplastic, analyzing each of the plurality of samples of each one of the plurality of known ratios of virgin thermoplastic/recycled thermoplastic with at least one of a group of analyses consisting of: a differential scanning calorimetry analysis; a physical thickness analysis; an ultraviolet-visible spectroscopy analysis; an attenuated total reflectance Fourier transform infrared spectroscopy analysis; a mechanical analysis; or a plasma atomic emission spectroscopic analysis.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: November 22, 2011
    Assignee: California Polytechnic Corporation
    Inventors: Keith Vorst, Greg Curtzwiler, Jeffrey Danes, Phil Costanzo
  • Publication number: 20110068262
    Abstract: A system and method of identifying a reference standard library for thermoplastic content includes preparing a plurality of samples of each one of a plurality of known ratios of virgin thermoplastic/recycled thermoplastic, analyzing each of the plurality of samples of each one of the plurality of known ratios of virgin thermoplastic/recycled thermoplastic with at least one of a group of analyses consisting of: a differential scanning calorimetry analysis; a physical thickness analysis; an ultraviolet-visible spectroscopy analysis; an attenuated total reflectance Fourier transform infrared spectroscopy analysis; a mechanical analysis; or a plasma atomic emission spectroscopic analysis.
    Type: Application
    Filed: September 22, 2009
    Publication date: March 24, 2011
    Inventors: Keith Vorst, Greg Curtzwiler, Jeffrey Danes, Phil Costanzo
  • Publication number: 20100256290
    Abstract: Embodiments of the present disclosure illustrate systems and methods for the separation of carbon nanotubes (CNTs) in solution. In certain embodiments, the CNTs are isolated by sonication and chemical modification of the CNTs using functionalization reactions, including thermo-initiated free radical polymerization and esterification. Beneficially, sonication facilitates mechanical separation of the CNTs, while the chemical modification of the CNTs results in more favorable interactions between the CNTs and their surrounding media which enables the separated CNTs to remain isolated. Embodiments of the isolated CNTs may also be employed into coating systems.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 7, 2010
    Inventors: Phillip J. Costanzo, Keith Vorst, Greg Curtzwiler