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).
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Patent number: 10323017Abstract: 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: GrantFiled: February 5, 2016Date of Patent: June 18, 2019Assignees: Alma Mater Studiorum—Universita di Bologna, University of OttawaInventors: Derek A. Pratt, Ronak Mayankbhai Shah, Evan Anthony Haidasz, Luca Valgimigli
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Publication number: 20180093150Abstract: 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: ApplicationFiled: October 5, 2016Publication date: April 5, 2018Inventor: DEREK PRATT
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Publication number: 20180022729Abstract: 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: ApplicationFiled: February 5, 2016Publication date: January 25, 2018Inventors: Derek A. Pratt, Ronak Mayankbhai Shah, Evan Anthony Haidasz, Luca Valgimigli
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Patent number: 9738606Abstract: 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: GrantFiled: June 4, 2012Date of Patent: August 22, 2017Assignees: Queen's University at Kingston, Alma Mater Studiorum—Universita Di BolognaInventors: Derek A. Pratt, Jason J. Hanthorn, Luca Valgimigli
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Publication number: 20140323562Abstract: 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: ApplicationFiled: November 23, 2012Publication date: October 30, 2014Inventors: Philip Jessop, Paul David Thornton, Shannon Marie Decker, Derek Pratt, Feng Zheng, Donna Lynn Leger
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Publication number: 20140224424Abstract: 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: ApplicationFiled: April 21, 2014Publication date: August 14, 2014Applicant: Hilti AktiengesellschaftInventors: Armin PFEIL, Johannes BRINKHORST, Didier GIGMES, Luca VALGIMIGLI, Derek PRATT, Denis BERTIN
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Publication number: 20140206585Abstract: 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: ApplicationFiled: June 4, 2012Publication date: July 24, 2014Applicants: UNIVERSITA DI BOLOGNA, Queen's University at KingstonInventors: Derek A. Pratt, Jason J. Hanthorn, Luca Valgimigli
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Patent number: 8735475Abstract: 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: GrantFiled: June 8, 2012Date of Patent: May 27, 2014Assignee: Hilti AktiengesellschaftInventors: Armin Pfeil, Johannes Brinkhorst, Didier Gigmes, Luca Valgimigli, Derek Pratt, Denis Bertin
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Publication number: 20130123393Abstract: 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: ApplicationFiled: June 8, 2012Publication date: May 16, 2013Applicant: Hilti AktiengesellschaftInventors: Armin PFEIL, Johannes BRINKHORST, Didier GIGMES, Luca VALGIMIGLI, Derek PRATT, Denis BERTIN
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Publication number: 20100041683Abstract: 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: ApplicationFiled: June 16, 2009Publication date: February 18, 2010Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
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Patent number: 7547709Abstract: 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: GrantFiled: November 2, 2004Date of Patent: June 16, 2009Assignee: Vanderbilt UniversityInventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
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Publication number: 20050065174Abstract: 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: ApplicationFiled: November 2, 2004Publication date: March 24, 2005Inventors: Derek Pratt, Luca Valgimigli, Gino DiLabio
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Patent number: 6835216Abstract: 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: GrantFiled: June 26, 2001Date of Patent: December 28, 2004Assignee: Vanderbilt UniversityInventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio
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Publication number: 20020143025Abstract: 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: ApplicationFiled: June 26, 2001Publication date: October 3, 2002Inventors: Derek A. Pratt, Luca Valgimigli, Gino A. DiLabio