Patents by Inventor John B. Kerr
John B. Kerr 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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Publication number: 20250113171Abstract: An electronic device may use information about the location of nearby devices to make sharing with those devices more intuitive for a user. When two devices are pointed towards one another, each device may automatically present the option to share information with the other device. When a user wishes to share information with one or more devices in a group of users, an array of icons representing the nearby users may be positioned on the display according to the locations of the nearby users so that the sharing user can easily select which user he or she wishes to share with. A sharing user may broadcast a signal and nearby users may elect to receive the signal by pointing their devices towards the sharing user. A user of two devices may share information between the two devices and may use one device to manipulate the information on the other device.Type: ApplicationFiled: December 11, 2024Publication date: April 3, 2025Inventors: Adam S. Meyer, Peter C. Tsoi, Stuart J. Wood, Duncan Robert Kerr, Martha Evans Hankey, John B. Morrell
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Publication number: 20250103268Abstract: A computing system comprises one or more processors, memory, a first housing that includes a primary display, and a second housing at least partially containing a physical keyboard and a touch-sensitive secondary display that is distinct from the primary display. The computing system displays a first user interface on the primary display, the first user interface includes one or more user interface elements. The computing system identifies, from the one or more user interface elements, an active user interface element that is in focus on the primary display. The computer system, in accordance with a determination that the active user interface element that is in focus on the primary display is associated with the application executed by the computing system, displays, on the touch-sensitive secondary display, a second user interface that includes a first set of one or more affordances corresponding to the application.Type: ApplicationFiled: June 28, 2024Publication date: March 27, 2025Inventors: Jeffrey Traer Bernstein, Duncan R. Kerr, John B. Morrell, Lawrence Y. Yang, Eric Lance Wilson, Adam S. Meyer
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Patent number: 12239337Abstract: An endoscopic instrument is provided and includes a housing including an elongated shaft assembly extending distally therefrom. The elongated shaft assembly includes inner and outer shaft members. The inner and outer shaft members are removably coupled to the housing and the outer shaft member is movable with respect to the inner shaft member. An end effector is operably supported at the distal end of the outer shaft member and includes a pair of jaw members configured for treating tissue. A bushing operably couples to the inner and outer shaft members of the shaft assembly and selectively and releasably couples to the housing. The bushing includes one or more mechanical interfaces configured to engage one or more slots defined through the inner shaft member and one or more slots defined through the outer shaft member to release the inner and outer shaft members from the housing.Type: GrantFiled: July 5, 2023Date of Patent: March 4, 2025Assignee: Covidien LPInventors: Robert B. Stoddard, James S. Cunningham, William J. Dickhans, Russell D. Hempstead, Eric R. Larson, Duane E. Kerr, William H. Nau, Jr., Anthony B. Ross, John J. Kappus
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Patent number: 9455451Abstract: Water soluble catalysts, (M)meso-tetra(N-Methyl-4-Pyridyl)Porphinepentachloride (M=Fe, Co, Mn & Cu), have been incorporated into the polymer binder of oxygen reduction cathodes in membrane electrode assemblies used in PEM fuel cells and found to support encouragingly high current densities. The voltages achieved are low compared to commercial platinum catalysts but entirely consistent with the behavior observed in electroanalytical measurements of the homogeneous catalysts. A model of the dynamics of the electrode action has been developed and validated and this allows the MEA electrodes to be optimized for any chemistry that has been demonstrated in solution. It has been shown that improvements to the performance will come from modifications to the structure of the catalyst combined with optimization of the electrode structure and a well-founded pathway to practical non-platinum group metal catalysts exists.Type: GrantFiled: October 11, 2013Date of Patent: September 27, 2016Assignee: The Regents of the University of CaliforniaInventors: John B. Kerr, Xiaobing Zhu, Gi Suk Hwang, Zulima Martin, Qinggang He, Peter Driscoll, Adam Weber, Kyle Clark
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Publication number: 20140106255Abstract: Water soluble catalysts, (M)meso-tetra(N-Methyl-4-Pyridyl)Porphinepentachloride (M=Fe, Co, Mn & Cu), have been incorporated into the polymer binder of oxygen reduction cathodes in membrane electrode assemblies used in PEM fuel cells and found to support encouragingly high current densities. The voltages achieved are low compared to commercial platinum catalysts but entirely consistent with the behavior observed in electroanalytical measurements of the homogeneous catalysts. A model of the dynamics of the electrode action has been developed and validated and this allows the MEA electrodes to be optimized for any chemistry that has been demonstrated in solution. It has been shown that improvements to the performance will come from modifications to the structure of the catalyst combined with optimization of the electrode structure and a well-founded pathway to practical non-platinum group metal catalysts exists.Type: ApplicationFiled: October 11, 2013Publication date: April 17, 2014Inventors: John B. Kerr, Xiaobing Zhu, Gi Suk Hwang, Zulima Hwang, Qinggang He, Peter Driscoll, Adam Weber, Kyle Clark
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Patent number: 7960037Abstract: A thin film device and compound having an anode, a cathode, and at least one light emitting layer between the anode and cathode, the at least one light emitting layer having at least one carbon nanotube and a conductive polymer.Type: GrantFiled: December 2, 2005Date of Patent: June 14, 2011Assignee: The Regents of the University of CaliforniaInventors: Gao Liu, Stephen Johnson, John B. Kerr, Andrew M. Minor, Samuel S. Mao
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Publication number: 20040235084Abstract: Novel agents acting as co-factors for replacement of NAD(P)+/NAD(P)H co-enzyme systems in enzymatic oxido-reductive reactions. Agents mimicking the action of NAD(P)+/NAD(P)H system in enzymatic oxidation/reduction of substrates into reduced or oxidized products. A method for selection and preparation of the mimicking agents for replacement of NAD(P)+/NAD(P)H system and a device comprising co-factors for replacement of NAD(P)+/NAD(P)H system.Type: ApplicationFiled: December 6, 2003Publication date: November 25, 2004Inventors: Richard H. Fish, John B. Kerr, H. Christine Lo
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Patent number: 6716596Abstract: Novel agents acting as co-factors for replacement of NAD(P)+/NAD(P)H co-enzyme systems in enzymatic oxido-reductive reactions. Agents mimicking the action of NAD(P)+/NAD(P)H system in enzymatic oxidation/reduction of substrates into reduced or oxidized products. A method for selection and preparation of the mimicking agents for replacement of NAD(P)+/NAD(P)H system and a device comprising co-factors for replacement of NAD(P)+/NAD(P)H system.Type: GrantFiled: March 12, 2001Date of Patent: April 6, 2004Assignee: The Regents of the University of CaliforniaInventors: Richard H. Fish, John B. Kerr, Christine H. Lo
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Publication number: 20030022266Abstract: Novel agents acting as co-factors for replacement of NAD(P)+/NAD(P)H co-enzyme systems in enzymatic oxido-reductive reactions. Agents mimicking the action of NAD(P)+/NAD(P)H system in enzymatic oxidation/reduction of substrates into reduced or oxidized products. A method for selection and preparation of the mimicking agents for replacement of NAD(P)+/NAD(P)H system and a device comprising co-factors for replacement of NAD(P)+/NAD(P)H system.Type: ApplicationFiled: March 12, 2001Publication date: January 30, 2003Inventors: Richard H. Fish, John B. Kerr, Christine H. Lo
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Patent number: 6045952Abstract: A electrochemical cell is described comprising an anode, a cathode, a solid polymer electrolyte, and a redox shuttle additive to protect the cell against overcharging and a redox shuttle additive to protect the cell against overcharging selected from the group consisting of:(a) a substituted anisole having the general formula (in an uncharged state): ##STR1## where R.sub.1 is selected from the group consisting of H, OCH.sub.3, OCH.sub.2 CH.sub.3, and OCH.sub.2 phenyl, and R.sub.2 is selected from the group consisting of OCH.sub.3, OCH.sub.2 CH.sub.3, OCH.sub.2 phenyl, and O.sup.- Li.sup.+ ; and(b) a di-anisole compound having the general formula (in an uncharged state): ##STR2## where R is selected from the group consisting of -OCH.sub.3 and -CH.sub.3, m is either 1 or 0, n is either 1 or 0, and X is selected from the group consisting of -OCH.sub.3 (methoxy) or its lithium salt --O.sup.- Li.sup.+.Type: GrantFiled: March 23, 1998Date of Patent: April 4, 2000Assignee: The United States of America as represented by the United States Department of EnergyInventors: John B. Kerr, Minmin Tian
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Patent number: 5017274Abstract: Oxygen is extracted from a fluid mixture feedstock by circulating a carrier fluid from an oxygen loading station to an electrochemical cell. The carrier fluid includes a carrier compound capable of reversibly binding oxygen, with oxygen binding dependent on the oxidation state of the compound. Oxygen bound to the carrier compound in a first oxidation state is released as the oxidation state is altered at the first electrode of the electrochemical cell. The carrier compound is then returned to the first oxidation state at the second electrode at the electrochemical cell. The loading station typically comprises an oxygen-permeable membrane which prevents bulk mixing of the fluid mixture and the carrier fluid.Type: GrantFiled: July 20, 1989Date of Patent: May 21, 1991Assignee: Aquanautics CorporationInventors: John B. Kerr, Emory S. De Castro, Bruce Zenner
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Patent number: 4959135Abstract: Methods and apparatus for the extraction of a ligand such as molecular oxygen from a first fluid environment and for release of a ligand such as molecular oxygen, as well as ligand carrier compounds therefor comprising linear, pentadentate polyalkylamines and transition metal ions. The carrier compounds have the general formula: ##STR1## where, each of R.sub.1 and R.sub.2 is independently an organic group including a sulfur, an oxygen or a nitrogen coordinated to M;each of m, n, o, and p is 1, 2, 3, or 4;X is selected from the group consisting of 2,6-pyridyl, 2,6-piperidyl, 2,5-pyrrolyl, 2,4-imidazolyl, substituted heterocyclic amines, --)--, --S--, ##STR2## and ##STR3## where R.sub.3 is hydrogen, lower alkyl or aralkyl; and M is a transition metal ion.Type: GrantFiled: February 3, 1989Date of Patent: September 25, 1990Assignee: Aquanautics CorporationInventors: Bruce D. Zenner, Joseph P. Ciccone, Emory S. De Castro, Larrie A. Deardurff, John B. Kerr
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Patent number: 4952289Abstract: Methods and apparatus for electrochemical extraction of a ligand such as molecular oxygen from a first fluid environment and for release of a ligand such as molecular oxygen, as well as ligand carrier compounds therefor comprising macrocyclic amines having the general formulas: ##STR1## where: A, B, C, D, E, and F are each nitrogen, oxygen, sulfur, or phosphorous;m, n, o, p, q, and r are each typically 2, 3, 4, 5, or 6;the R substituents are each generally H or short chain (linear or branched) alkyl, although R.sub.2 may represent ketyl (.dbd.o); andM is a suitable transition metal ion.Type: GrantFiled: May 9, 1988Date of Patent: August 28, 1990Assignee: Aquanautics CorporationInventors: Joseph P. Ciccone, Emory S. DeCastro, John B. Kerr