Patents by Inventor James Wojtyk
James Wojtyk 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: 8124026Abstract: Devices with lateral flow elements and integral fluidics are disclosed. The integral fluidics consist of injector pumps comprised of fluidic elements under instrument control. The fluidic element of an injector pump is fluidically connected to lateral flow elements and can be used to control fluid entry into containment chambers referred to as micro-reactors. The lateral flow elements comprise conductor elements that can be used for sample application and transport of analyte contained in the sample to the micro-reactor. Fluidic transport through the fluidic element of the injector pump is under instrument-control. Both the lateral flow element and the fluidic element may contain chemical entities incorporated along their length. The chemical reactions that can be used for analyte detection using the devices are described. Also described are methods of manufacture of these devices.Type: GrantFiled: March 5, 2010Date of Patent: February 28, 2012Assignee: Epocal Inc.Inventors: Imants Lauks, Raymond J. Pierce, James Wojtyk, Benoit R. Bergevin
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Publication number: 20100202926Abstract: Devices with lateral flow elements and integral fluidics are disclosed. The integral fluidics consist of injector pumps comprised of fluidic elements under instrument control. The fluidic element of an injector pump is fluidically connected to lateral flow elements and can be used to control fluid entry into containment chambers referred to as micro-reactors. The lateral flow elements comprise conductor elements that can be used for sample application and transport of analyte contained in the sample to the micro-reactor. Fluidic transport through the fluidic element of the injector pump is under instrument-control. Both the lateral flow element and the fluidic element may contain chemical entities incorporated along their length. The chemical reactions that can be used for analyte detection using the devices are described. Also described are methods of manufacture of these devices.Type: ApplicationFiled: March 5, 2010Publication date: August 12, 2010Applicant: EPOCAL INC.Inventors: Imants LAUKS, Raymond J. PIERCE, James WOJTYK, Benoit R. BERGEVIN
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Patent number: 7722817Abstract: Devices with lateral flow elements and integral fluidics are disclosed. The integral fluidics consist of injector pumps comprised of fluidic elements under instrument control. The fluidic element of an injector pump is fluidically connected to lateral flow elements and can be used to control fluid entry into containment chambers referred to as micro-reactors. The lateral flow elements comprise conductor elements that can be used for sample application and transport of analyte contained in the sample to the micro-reactor. Fluidic transport through the fluidic element of the injector pump is under instrument-control. Both the lateral flow element and the fluidic element may contain chemical entities incorporated along their length. The chemical reactions that can be used for analyte detection using the devices are described. Also described are methods of manufacture of these devices.Type: GrantFiled: August 28, 2003Date of Patent: May 25, 2010Assignee: Epocal Inc.Inventors: Imants Lauks, Raymond J. Pierce, James Wojtyk, Benoit R. Bergevin
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Patent number: 7201833Abstract: The invention is directed to analytical devices and micro-arrays with integral fluidic inputs and outputs. The devices are constructed from planar solid-phase hydrophilic matrix circuits containing dry chemical reagents overlaying integral electro-kinetic pumping electrodes. The hydrophilic matrix circuits are enclosed within a gas permeable electrical insulator. The devices are for use in micro-scale bio-analysis, mixture separation and reaction.Type: GrantFiled: December 2, 2002Date of Patent: April 10, 2007Assignee: Epocal Inc.Inventors: Imants Lauks, Raymond J. Pierce, James Wojtyk, Benoit R. Bergevin
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Publication number: 20050047972Abstract: Devices with lateral flow elements and integral fluidics are disclosed. The integral fluidics consist of injector pumps comprised of fluidic elements under instrument control. The fluidic element of an injector pump is fluidically connected to lateral flow elements and can be used to control fluid entry into containment chambers referred to as micro-reactors. The lateral flow elements comprise conductor elements that can be used for sample application and transport of analyte contained in the sample to the micro-reactor. Fluidic transport through the fluidic element of the injector pump is under instrument-control. Both the lateral flow element and the fluidic element may contain chemical entities incorporated along their length. The chemical reactions that can be used for analyte detection using the devices are described. Also described are methods of manufacture of these devices.Type: ApplicationFiled: August 28, 2003Publication date: March 3, 2005Inventors: Imants Lauks, Raymond Pierce, James Wojtyk, Benoit Bergevin
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Publication number: 20040096893Abstract: Provided is a method for modifying silicon with an organic molecule, under mild conditions. If the attached molecule is bi-functional, it may be subsequently reacted with a bio-molecule, to form a covalently attached layer of bio-molecule on the silicon surface.Type: ApplicationFiled: November 18, 2003Publication date: May 20, 2004Inventors: Rabah Boukherroub, Danial D. M. Wayner, James Wojtyk
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Patent number: 6677163Abstract: Provided is a method for modifying silicon with an organic molecule, under mild conditions. If the attached molecule is bi-functional, it may be subsequently reacted with a bio-molecule, to form a covalently attached layer of bio-molecule on the silicon surface.Type: GrantFiled: November 16, 2000Date of Patent: January 13, 2004Assignee: National Research Council of CanadaInventors: Rabah Boukherroub, Danial D. M. Wayner, James Wojtyk
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Publication number: 20030127333Abstract: The invention is directed to analytical devices and micro-arrays with integral fluidic inputs and outputs. The devices are constructed from planar solid-phase hydrophilic matrix circuits containing dry chemical reagents overlaying integral electro-kinetic pumping electrodes. The hydrophilic matrix circuits are enclosed within a gas permeable electrical insulator. The devices are for use in micro-scale bio-analysis, mixture separation and reaction.Type: ApplicationFiled: December 2, 2002Publication date: July 10, 2003Inventors: Imants Lauks, Raymond J. Pierce, James Wojtyk, Benoit R. Bergevin
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Patent number: 6549327Abstract: Disclosed is a display comprising an arrangement of a plurality of optically anisotropic rotatable elements, each of the rotatable elements having a surface in contact with an enabling fluid, the rotatable elements being electrically dipolar in the presence of the enabling fluid and thus being subject to rotation upon application of an electric field, the rotatable elements being free to rotate in place but not free to translate substantially so as to disrupt the arrangement of rotatable elements, wherein a first portion of the surface contains a mixture of a chelating agent and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2, and wherein a second portion of the surface contains substantially no spiropyran.Type: GrantFiled: May 24, 2001Date of Patent: April 15, 2003Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, Erwin Buncel, James Wojtyk
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Patent number: 6517618Abstract: Disclosed is an electrophoretic ink comprising a suspending fluid and, suspended in the suspending fluid, a plurality of particles comprising a mixture of a chelating agent and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2, the particles being free to migrate within the suspending fluid under the influence of an electric field.Type: GrantFiled: May 24, 2001Date of Patent: February 11, 2003Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel
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Publication number: 20030002132Abstract: Disclosed is an electrophoretic ink comprising a suspending fluid and, suspended in the suspending fluid, a plurality of particles comprising a mixture of a chelating agent and a spiropyran material of the formula 1Type: ApplicationFiled: May 24, 2001Publication date: January 2, 2003Applicant: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel
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Publication number: 20020186450Abstract: Disclosed is a display comprising an arrangement of a plurality of optically anisotropic rotatable elements, each of the rotatable elements having a surface in contact with an enabling fluid, the rotatable elements being electrically dipolar in the presence of the enabling fluid and thus being subject to rotation upon application of an electric field, the rotatable elements being free to rotate in place but not free to translate substantially so as to disrupt the arrangement of rotatable elements, wherein a first portion of the surface contains a mixture of a chelating agent and a spiropyran material of the formula 1Type: ApplicationFiled: May 24, 2001Publication date: December 12, 2002Applicant: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, Erwin Buncel, James Wojtyk
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Patent number: 6458165Abstract: Disclosed are marking particles comprising a first polymer a second polymer, a chelating agent, and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2. The marking particles comprise a core containing the first polymer in which is dispersed the chelating agent and the spiropyran and encapsulated within a shell of the second polymer formulated by an interfacial polymerization.Type: GrantFiled: January 11, 2002Date of Patent: October 1, 2002Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel
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Patent number: 6365312Abstract: Disclosed are marking particles comprising a first polymer, a second polymer, a chelating agent, and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2. The marking particles comprise a core containing the first polymer in which is dispersed the chelating agent and the spiropyran and encapsulated within a shell of the second polymer formulated by an interfacial polymerization.Type: GrantFiled: May 24, 2001Date of Patent: April 2, 2002Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel