Patents by Inventor Peter Odell
Peter Odell 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: 9979285Abstract: Systems and methods for providing peak current mode control (PCMC) for power converters using discrete analog components. Peak current mode control functionality for latching, set, reset, clocking and slope compensation is provided via available analog components that provide improved performance, design flexibility, reliability, and radiation tolerance. Discrete analog components may include analog comparators, resistors, capacitors, diodes, etc.Type: GrantFiled: October 17, 2017Date of Patent: May 22, 2018Assignee: Crane Electronics, Inc.Inventors: Cuon Lam, Hach Nguyen, Khoa Nguyen, Peter Odell, Sovann Song
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Patent number: 9866100Abstract: A circuit for providing dynamic output current sharing using average current mode control for active-reset and self-driven synchronous rectification with pre-bias startup and redundancy capabilities for power converters. The circuit communicates a secondary side feedback signal to a primary side via a bidirectional magnetic communicator that also provides a secondary voltage supply. Pre-bias startup is achieved by detection of the output current direction and controlling the gate signals of synchronous rectifiers. The circuit permits dynamic current sharing via a single-control signal and automatic master converter selection and promotion.Type: GrantFiled: July 18, 2017Date of Patent: January 9, 2018Assignee: Crane Electronics, Inc.Inventors: Cuon Lam, Hach Nguyen, Khoa Nguyen, Peter Odell, Sovann Song
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Publication number: 20170358979Abstract: A circuit for providing dynamic output current sharing using average current mode control for active-reset and self-driven synchronous rectification with pre-bias startup and redundancy capabilities for power converters. The circuit communicates a secondary side feedback signal to a primary side via a bidirectional magnetic communicator that also provides a secondary voltage supply. Pre-bias startup is achieved by detection of the output current direction and controlling the gate signals of synchronous rectifiers. The circuit permits dynamic current sharing via a single-control signal and automatic master converter selection and promotion.Type: ApplicationFiled: July 18, 2017Publication date: December 14, 2017Inventors: Cuon Lam, Hach Nguyen, Khoa Nguyen, Peter Odell, Sovann Song
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Patent number: 9780635Abstract: A circuit for providing dynamic output current sharing using average current mode control for active-reset and self-driven synchronous rectification with pre-bias startup and redundancy capabilities for power converters. The circuit communicates a secondary side feedback signal to a primary side via a bidirectional magnetic communicator that also provides a secondary voltage supply. Pre-bias startup is achieved by detection of the output current direction and controlling the gate signals of synchronous rectifiers. The circuit permits dynamic current sharing via a single-control signal and automatic master converter selection and promotion.Type: GrantFiled: June 10, 2016Date of Patent: October 3, 2017Assignee: Crane Electronics, Inc.Inventors: Cuon Lam, Hach Nguyen, Khoa Nguyen, Peter Odell, Sovann Song
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Patent number: 9742183Abstract: Systems and methods are disclosed for providing over-voltage protection for power converters. An over-voltage protection loop includes an error amplifier that maintains an external reference voltage within a highly precise range that can be used to provide a highly precise output voltage from the over-voltage protection loop. The over-voltage protection loop may also include feedback impedance that delays the output of the over-voltage protection loop. The delay may prevent the over-voltage protection loop from being engaged due to voltage transients output from a main servo loop circuit that provides a nominal output voltage under normal operation, thus allowing the threshold voltage and output voltage of the over-voltage protection loop to be set close to the nominal output voltage of the main servo loop circuit.Type: GrantFiled: December 9, 2016Date of Patent: August 22, 2017Assignee: Crane Electronics, Inc.Inventors: Cuon Lam, Khoa Nguyen, Hach Nguyen, Peter Odell, Sovann Song
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Patent number: 9735566Abstract: Systems and methods are disclosed for providing over-voltage protection for power converters. An over-voltage protection loop includes an error amplifier that maintains an external reference voltage within a highly precise range that can be used to provide a highly precise output voltage from the over-voltage protection loop. The over-voltage protection loop may also include feedback impedance that delays the output of the over-voltage protection loop. The delay may prevent the over-voltage protection loop from being engaged due to voltage transients output from a main servo loop circuit that provides a nominal output voltage under normal operation, thus allowing the threshold voltage and output voltage of the over-voltage protection loop to be set close to the nominal output voltage of the main servo loop circuit.Type: GrantFiled: December 12, 2016Date of Patent: August 15, 2017Assignee: Crane Electronics, Inc.Inventors: Cuon Lam, Khoa Nguyen, Hach Nguyen, Peter Odell, Sovann Song
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Patent number: 9021948Abstract: Methods and structures are disclosed to minimize the presence of vapor clouding in the path between an energy (e.g., radiation) source and the dampening fluid layer in a variable data lithography system. Also disclosed are conditions for optimizing vaporization of regions of the dampening fluid layer for a given laser source power. Conditions are also disclosed for minimizing re-condensation of vaporized dampening fluid onto the patterned dampening fluid layer. Accordingly, a reduction in the power required for, and an increase in the reproducibility of, patterning of a dampening fluid layer over a reimageable surface in a variable data lithography system are disclosed.Type: GrantFiled: August 5, 2011Date of Patent: May 5, 2015Assignees: Xerox Corporation, Palo Alto Research Center IncorporatedInventors: Ashish Pattekar, Timothy Stowe, David Biegelsen, Peter Odell
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Patent number: 8702221Abstract: Disclosed herein are amide gellant compositions with aromatic end-caps consisting of a blend of oligomers (dimer, trimer, tetramer and pentamer) that may be optimized to stable gelling viscosity and controlled showthrough of printed inks.Type: GrantFiled: May 8, 2012Date of Patent: April 22, 2014Assignee: Xerox CorporationInventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Daryl Vanbesien, Jenny Eliyahu, Jennifer L. Belelie, Peter Odell
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Publication number: 20130300796Abstract: Disclosed herein are amide gellant compositions with aromatic end-caps consisting of a blend of oligomers (dimer, trimer, tetramer and pentamer) that may be optimized to stable gelling viscosity and controlled showthrough of printed inks.Type: ApplicationFiled: May 8, 2012Publication date: November 14, 2013Applicant: Xerox CorporationInventors: Naveen Chopra, Michelle N. Chrétien, Barkev Keoshkerian, Daryl Vanbesien, Jenny Eliyahu, Jennifer L. Belelie, Peter Odell
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Publication number: 20130032050Abstract: Methods and structures are disclosed to minimize the presence of vapor clouding in the path between an energy (e.g., radiation) source and the dampening fluid layer in a variable data lithography system. Also disclosed are conditions for optimizing vaporization of regions of the dampening fluid layer for a given laser source power. Conditions are also disclosed for minimizing re-condensation of vaporized dampening fluid onto the patterned dampening fluid layer. Accordingly, a reduction in the power required for, and an increase in the reproducibility of, patterning of a dampening fluid layer over a reimageable surface in a variable data lithography system are disclosed.Type: ApplicationFiled: August 5, 2011Publication date: February 7, 2013Applicants: XEROX CORPORATION, PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Ashish Pattekar, Timothy Stowe, David Biegelsen, Peter Odell
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Patent number: 8101801Abstract: Disclosed is a chemical compound having the structure: wherein R1 is an all group, aryl group, alkylaryl group or arylalkyl group with at least 23 carbon atoms, R2 is an alkylene group, arylene group, alkyarylene group or arylalkylene group with at least 2 carbons and X is a quaternary ammonium salt.Type: GrantFiled: May 18, 2009Date of Patent: January 24, 2012Assignee: Xerox CorporationInventors: Adela Goredema, Aaron Strong, Peter Odell, C. Geoffrey Allen, Mihaela Maria Birau
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Publication number: 20100292467Abstract: Disclosed is a chemical compound having the structure: wherein R1 is an all group, aryl group, alkylaryl group or arylalkyl group with at least 23 carbon atoms, R2 is an alkylene group, arylene group, alkyarylene group or arylalkylene group with at least 2 carbons and X is a quaternary ammonium salt.Type: ApplicationFiled: May 18, 2009Publication date: November 18, 2010Applicant: XEROX CORPORATIONInventors: Adela GOREDEMA, Aaron STRONG, Peter ODELL, C. Geoffrey ALLEN, Mihaela Maria BIRAU
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Publication number: 20080022892Abstract: Ink compositions that include one or more radiation curable oil soluble components and one or more thermal solvents are provided, as well as methods of preparing such ink compositions and methods of using such ink compositions are provided. A jet printing method that jets an ink composition onto an intermediate substrate and transfers the intermediate image to a substrate for exposure to radiation having wavelengths within the range of about 4 nanometers to about 500 nanometers is provided.Type: ApplicationFiled: September 11, 2007Publication date: January 31, 2008Applicant: XEROX CORPORATIONInventors: Peter Odell, Marcel Breton, Christy Bedford, Christopher Wagner
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Publication number: 20070211124Abstract: An ink set is made up of at least three differently colored phase change inks, for example cyan, magenta and yellow, wherein at least one of the colored phase change inks is a photochromic ink that contains a photochromic material. Upon exposure to activating radiation such as ultraviolet light, the at least one photochromic ink changes to a color different from the color of the photochromic ink prior to exposure to the activating radiation.Type: ApplicationFiled: March 9, 2006Publication date: September 13, 2007Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Christopher Wagner, C. Allen, Paul Smith, Edward Zwartz, Peter Odell, Peter Kazmaier
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Publication number: 20070211128Abstract: A process including selecting an ink having a viscosity that varies continuously over a range of transfuse process temperatures; forming an image on a preliminary receiving surface or on a final receiving substrate with the selected ink; providing a final receiving substrate at a selected temperature optionally comprising modifying the temperature of the final receiving substrate to achieve a selected temperature; optionally passing the final receiving substrate through a nip; optionally exerting pressure on the final receiving substrate in the nip to transfer the ink image from the preliminary receiving surface to the final receiving substrate; optionally fusing the ink image onto the final receiving substrate at a transfuse temperature; and controlling the viscosity of the ink during printing to match a selected characteristic of the final receiving substrate; and preserving the ink image.Type: ApplicationFiled: March 9, 2006Publication date: September 13, 2007Inventors: Leonard Parker, Jennifer Belelie, Peter Odell, Paul Smith
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Publication number: 20070211110Abstract: An ink that may be used in ink jet devices is a photochromic ink comprising an ink vehicle that includes at least one radiation curable component, at least one photochromic material and at least one photoinitiator. The ink is cured via exposure to radiation that cures the at least one radiation curable component of the ink. A radiation curable ink capable of exhibiting photochromatic color changes, which may be used to indicate a document's authenticity, is thus achieved.Type: ApplicationFiled: March 9, 2006Publication date: September 13, 2007Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Christopher Wagner, Eniko Toma, Jennifer Belelie, Peter Odell
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Publication number: 20070142492Abstract: A radiation curable ink includes a curable monomer or oligomer, a curable wax, a colorant, and at least one initiator.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Applicant: XEROX CORPORATIONInventors: Peter Odell, Eniko Toma, Jennifer Belelie, Christopher Wagner
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Publication number: 20070120921Abstract: A radiation curable phase change ink preferably used in piezoelectric ink jet devices includes an ink vehicle that includes at least one curable epoxy-polyamide gellant, and at least one colorant. The use of the gellant enables the ink to form a gel state having a viscosity of at least 103 mPa·s at very low temperatures of about 25° C. to about 100° C. The ink may thus be jetted, for example onto an intermediate tansfer member surface or directly to an image receiving substrate, at very low jetting temperatures of, for example, about 40° C. to about 110° C.Type: ApplicationFiled: November 30, 2005Publication date: May 31, 2007Applicant: XEROX CORPORATIONInventors: Rina Carlini, Eniko Toma, Peter Odell, Vaisnavi Siritharan
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Publication number: 20070123601Abstract: The phase change, curable composition comprises curable monomer, photoinitiator that initiates polymerization of the curable monomer, and phase change agent that provides the composition with an increase in viscosity of at least four orders of magnitude, from a first temperature, the first temperature being from 50° C. to 130° C., to a second temperature, the second temperature being from 0° C. to 70° C., wherein the second temperature is at least 10° C. below the first temperature. A coating over an image may be applied by providing a composition comprising curable monomer at a first temperature; applying the composition over the image, the image being at a second temperature; and exposing the composition to radiation to initiate polymerization of the curable monomer. In this process, the composition has a viscosity at the second temperature that is at least four orders of magnitude greater than its viscosity at the first temperature.Type: ApplicationFiled: November 30, 2005Publication date: May 31, 2007Applicant: XEROX CORPORATIONInventors: Jennifer Belelie, Peter Odell, Daryl Vanbesien, Marcel Breton
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Publication number: 20070123663Abstract: Disclosed is a process for preparing a compound of the formula wherein R1 is an alkyl group having at least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, or an alkylaryl group having at least one ethylenic unsaturation, R2 and R3 each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups, R4 and R5 each, independently of the other, is a hydrogen atom or an alkyl group, and n is an integer representing the number of repeat amide units and is at least 1, said process comprising: (a) reacting a diacid of the formula HOOC—R2—COOH with a diamine of the formula in the presence of a catalyst, a solvent, and a coupling agent to form an oligoamide intermediate; and (b) reacting the oligoamide intermediate with an alcohol of the formula R1—OH to form the product.Type: ApplicationFiled: November 30, 2005Publication date: May 31, 2007Inventors: Eniko Toma, Adela Goredema, Jennifer Belelie, Peter Odell