Patents by Inventor Derek A. Pratt

Derek A. Pratt 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).

  • Patent number: 10323017
    Abstract: A method of preventing or reducing the level of degradation of an organic substrate is described, wherein a composition is formed that includes the organic substrate together with an effective amount of a sacrificial base and a diarylamine antioxidant.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: June 18, 2019
    Assignees: Alma Mater Studiorum—Universita di Bologna, University of Ottawa
    Inventors: Derek A. Pratt, Ronak Mayankbhai Shah, Evan Anthony Haidasz, Luca Valgimigli
  • Publication number: 20180093150
    Abstract: A retractable basketball hoop comprising a backboard, a basketball rim, a pole to support the backboard at an elevation, a motor in communication with the pole and a controller, with a user interface, in communication with the motor for adjusting the elevation of the backboard. The basketball rim is pivotally coupled to the backboard.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 5, 2018
    Inventor: DEREK PRATT
  • Publication number: 20180022729
    Abstract: A method of preventing or reducing the level of degradation of an organic substrate is described, wherein a composition is formed that includes the organic substrate together with an effective amount of a sacrificial base and a diarylamine antioxidant.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 25, 2018
    Inventors: Derek A. Pratt, Ronak Mayankbhai Shah, Evan Anthony Haidasz, Luca Valgimigli
  • Patent number: 9738606
    Abstract: A compound of Formula I, Formula IA, Formula IB, or Formula II, or an acid or base addition salt thereof, and use of these compounds as antioxidants. In one embodiment, a compound of Formula II, wherein each of X, Y, and Z are independently a carbon or nitrogen atom; R1 and R2 are each independently a hydrogen or an electron donating group, but are not both hydrogen, and wherein R1, and R2 are each bonded to a carbon atom in their own respective aryl ring.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: August 22, 2017
    Assignees: Queen's University at Kingston, Alma Mater Studiorum—Universita Di Bologna
    Inventors: Derek A. Pratt, Jason J. Hanthorn, Luca Valgimigli
  • Publication number: 20140323562
    Abstract: The present application provides compound of Formula X wherein A is an optionally substituted aliphatic or an optionally substituted aryl, and B is a moiety that stabilizes the partial positive charge at the carbon adjacent the divalent sulfur. The compound of Formula X is useful as a reversible antioxidant in a variety of applications. Also provided are methods of synthesizing the compound of Formula X.
    Type: Application
    Filed: November 23, 2012
    Publication date: October 30, 2014
    Inventors: Philip Jessop, Paul David Thornton, Shannon Marie Decker, Derek Pratt, Feng Zheng, Donna Lynn Leger
  • Publication number: 20140224424
    Abstract: The use of a mixture of 5-pyrimidinol derivatives with sterically hindered phenol derivatives for adjusting the reactivity and the gel time of resin mixtures and reactive resin mortars based on radically polymerizable compounds is described. Furthermore, a resin mixture containing the inhibitor combination, a reactive resin mortar containing this resin mixture and two-component mortar systems with the reactive resin mortar according to the invention and a hardener with improved stability in storage and good low-temperature hardening properties are also described. The resin mixture according to the invention is suitable in particular for chemical fastening of construction elements in boreholes in various substrates.
    Type: Application
    Filed: April 21, 2014
    Publication date: August 14, 2014
    Applicant: Hilti Aktiengesellschaft
    Inventors: Armin PFEIL, Johannes BRINKHORST, Didier GIGMES, Luca VALGIMIGLI, Derek PRATT, Denis BERTIN
  • Publication number: 20140206585
    Abstract: A compound of Formula I, Formula IA, Formula IB, or Formula II, or an acid or base addition salt thereof, and use of these compounds as antioxidants. In one embodiment, a compound of Formula II, wherein each of X, Y, and Z are independently a carbon or nitrogen atom; R1 and R2 are each independently a hydrogen or an electron donating group, but are not both hydrogen, and wherein R1, and R2 are each bonded to a carbon atom in their own respective aryl ring.
    Type: Application
    Filed: June 4, 2012
    Publication date: July 24, 2014
    Applicants: UNIVERSITA DI BOLOGNA, Queen's University at Kingston
    Inventors: Derek A. Pratt, Jason J. Hanthorn, Luca Valgimigli
  • Patent number: 8735475
    Abstract: The use of a mixture of 5-pyrimidinol derivatives with sterically hindered phenol derivatives for adjusting the reactivity and the gel time of resin mixtures and reactive resin mortars based on radically polymerizable compounds is described. Furthermore, a resin mixture containing the inhibitor combination, a reactive resin mortar containing this resin mixture and two-component mortar systems with the reactive resin mortar according to the invention and a hardener with improved stability in storage and good low-temperature hardening properties are also described. The resin mixture according to the invention is suitable in particular for chemical fastening of construction elements in boreholes in various substrates.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: May 27, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventors: Armin Pfeil, Johannes Brinkhorst, Didier Gigmes, Luca Valgimigli, Derek Pratt, Denis Bertin
  • Publication number: 20130123393
    Abstract: The use of a mixture of 5-pyrimidinol derivatives with sterically hindered phenol derivatives for adjusting the reactivity and the gel time of resin mixtures and reactive resin mortars based on radically polymerizable compounds is described. Furthermore, a resin mixture containing the inhibitor combination, a reactive resin mortar containing this resin mixture and two-component mortar systems with the reactive resin mortar according to the invention and a hardener with improved stability in storage and good low-temperature hardening properties are also described. The resin mixture according to the invention is suitable in particular for chemical fastening of construction elements in boreholes in various substrates.
    Type: Application
    Filed: June 8, 2012
    Publication date: May 16, 2013
    Applicant: Hilti Aktiengesellschaft
    Inventors: Armin PFEIL, Johannes BRINKHORST, Didier GIGMES, Luca VALGIMIGLI, Derek PRATT, Denis BERTIN
  • Publication number: 20100041683
    Abstract: Compounds, preferably 5-pyrimidinol and 3-pyridinol derivatives, that act as effective chain breaking antioxidants of both the lipid and water-soluble variety (analogous to the natural Vitamins E and C), many of which are more reactive toward peroxyl radicals than the most potent form of Vitamin E. These compounds may exhibit many chemopreventive effects associated with conditions in which free radical-mediated cellular damage or disruption is implicated and Vitamins E and C are shown to have protective effects. Additionally, these compounds should be excellent oxidation inhibitors as additives to fuels, lubricants, rubber, polymers, chemicals, solvents and foodstuffs.
    Type: Application
    Filed: June 16, 2009
    Publication date: February 18, 2010
    Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
  • Patent number: 7547709
    Abstract: Compounds, preferably 5-pyrimidinol and 3-pyridinol derivatives, that act as effective chain breaking antioxidants of both the lipid and water-soluble variety (analogous to the natural Vitamins E and C), many of which are more reactive toward peroxyl radicals than the most potent form of Vitamin E. These compounds may exhibit many chemopreventive effects associated with conditions in which free radical-mediated cellular damage or disruption is implicated and Vitamins E and C are shown to have protective effects. Additionally, these compounds should be excellent oxidation inhibitors as additives to fuels, lubricants, rubber, polymers, chemicals, solvents and foodstuffs.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: June 16, 2009
    Assignee: Vanderbilt University
    Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
  • Publication number: 20050065174
    Abstract: Compounds, preferably 5-pyrimidinol and 3-pyridinol derivatives, that act as effective chain breaking antioxidants of both the lipid and water-soluble variety (analogous to the natural Vitamins E and C), many of which are more reactive toward peroxyl radicals than the most potent form of Vitamin E. These compounds may exhibit many chemopreventive effects associated with conditions in which free radical-mediated cellular damage or disruption is implicated and Vitamins E and C are shown to have protective effects. Additionally, these compounds should be excellent oxidation inhibitors as additives to fuels, lubricants, rubber, polymers, chemicals, solvents and foodstuffs.
    Type: Application
    Filed: November 2, 2004
    Publication date: March 24, 2005
    Inventors: Derek Pratt, Luca Valgimigli, Gino DiLabio
  • Patent number: 6835216
    Abstract: Compounds, preferably 5-pyrimidinol and 3-pyridinol derivatives, that act as effective chain breaking antioxidants of both the lipid and water-soluble variety (analogous to the natural Vitamins E and C), many of which are more reactive toward peroxyl radicals than the most potent form of Vitamin E. These compounds may exhibit many chemopreventive effects associated with conditions in which free radical-mediated cellular damage or disruption is implicated and Vitamins E and C are shown to have protective effects. Additionally, these compounds should be excellent oxidation inhibitors as additives to fuels, lubricants, rubber, polymers, chemicals, solvents and foodstuffs.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: December 28, 2004
    Assignee: Vanderbilt University
    Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
  • Publication number: 20020143025
    Abstract: Compounds, preferably 5-pyrimidinol and 3-pyridinol derivatives, that act as effective chain breaking antioxidants of both the lipid and water-soluble variety (analogous to the natural Vitamins E and C), many of which are more reactive toward peroxyl radicals than the most potent form of Vitamin E. These compounds may exhibit many chemopreventive effects associated with conditions in which free radical-mediated cellular damage or disruption is implicated and Vitamins E and C are shown to have protective effects. Additionally, these compounds should be excellent oxidation inhibitors as additives to fuels, lubricants, rubber, polymers, chemicals, solvents and foodstuffs.
    Type: Application
    Filed: June 26, 2001
    Publication date: October 3, 2002
    Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio