Patents by Inventor Chad A. Ulven

Chad A. Ulven 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).

  • Ankle replacement apparatus and method
    Patent number: 10568743
    Abstract: In some exemplary embodiments, an ankle replacement prosthesis includes a tibial component which provides a convex bearing surface, and a talar component which provides a concave bearing surface configured to interface with the convex bearing surface of the tibial component to provide a joint of the ankle replacement prosthesis. The tibial component is configured to be attached to a patient's tibia and the talar component is configured to be attached to the patient's talus.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: February 25, 2020
    Assignee: NDSU Research Foundation
    Inventors: Jared S. Aelony, Fardad Azarmi, Chad A. Ulven
  • UTILIZATION OF FLAX FIBERS AND GLASS FIBERS IN A BIO-BASED RESIN
    Publication number: 20160289447
    Abstract: The invention provides structural biocomposites comprising cellulose-based bast natural fibers, glass fibers, or mixtures thereof, and polyurethanes. The polyurethanes are synthesized from the reaction of polyfunctional bio-based polyols with polyisocyanates. The resultant polyurethanes have higher moduli, hardness, and Tg compared to other bio- and petroleum-based polyols. Methods of making the structural biocomposites are also disclosed.
    Type: Application
    Filed: November 18, 2014
    Publication date: October 6, 2016
    Inventors: Dean C. WEBSTER, Thomas J. NELSON, Nassibeh HOSSEINI, Chad A. ULVEN
  • IMPROVED ANKLE REPLACEMENT APPARATUS AND METHOD
    Publication number: 20160074169
    Abstract: In some exemplary embodiments, an ankle replacement prosthesis includes a tibial component which provides a convex bearing surface, and a talar component which provides a concave bearing surface configured to interface with the convex bearing surface of the tibial component to provide a joint of the ankle replacement prosthesis. The tibial component is configured to be attached to a patient's tibia and the talar component is configured to be attached to the patient's talus.
    Type: Application
    Filed: May 1, 2014
    Publication date: March 17, 2016
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Jared S. Aelony, Fardad Azarmi, Chad A. Ulven
  • Composite diving board
    Patent number: 9114268
    Abstract: A composite diving board which has a sandwich structure of an upper and lower composite laminate surrounding a central core. The laminates comprise a fibrous material comprising fibers of carbon, graphite, aramid, oriented high molecular weight polyethylene, oriented high molecular weight polypropylene, and/or boron. The core has a decrease in thickness along the longitudinal axis of the board from a fulcrum region toward the tip end of the board.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 25, 2015
    Assignee: Duraflex International Corp.
    Inventors: William B. Isaacson, Chad A. Ulven
  • COMPOSITE DIVING BOARD
    Publication number: 20120083390
    Abstract: A composite diving board comprising a composite laminate of fibers in a matrix.
    Type: Application
    Filed: December 13, 2011
    Publication date: April 5, 2012
    Applicant: DURAFLEX INTERNATIONAL CORP.
    Inventors: William B. Isaacson, Chad A. Ulven
  • Composite diving board
    Patent number: 8075452
    Abstract: A composite diving board comprising a composite laminate of fibers in a matrix.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: December 13, 2011
    Assignee: Duraflex International Corp.
    Inventors: William B. Isaacson, Chad A. Ulven
  • COMPOSITE DIVING BOARD
    Publication number: 20110059826
    Abstract: A composite diving board comprising a composite laminate of fibers in a matrix.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 10, 2011
    Applicant: DURAFLEX INTERNATIONAL CORP.
    Inventors: William B. Isaacson, Chad A. Ulven