Patents by Inventor Sean E. Doris
Sean E. Doris 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: 20230187373Abstract: A method of forming a charge pattern on a microchip includes depositing a first material on an insulator surface of the microchip, depositing a material having capability of forming a self-assembled monolayer on the other material, wherein the material comprises at least one material selected from the group consisting of: octadecyltrichlorosilane, phenethyltrichlorosilane, hexamethyldisilazane, allyltrimethoxysilane, or perfluorooctyltrichlorosilanem, and patterning the self-assembled monolayer to reveal a portion of the first material.Type: ApplicationFiled: February 3, 2023Publication date: June 15, 2023Inventors: Eugene M. Chow, JenPing Lu, Armin R. Volkel, Bing R. Hsieh, Gregory L. Whiting, Sean E. Doris
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Patent number: 11674829Abstract: A sensor system includes a sensor configured to measure a parameter. The sensor system also includes a memory configured to record one or more occurrences when the parameter is outside of a predetermined range. The memory includes a wire, a counter-electrode, and an electrolyte.Type: GrantFiled: December 23, 2019Date of Patent: June 13, 2023Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Sean E. Doris, Kent Evans
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Patent number: 11574876Abstract: A method of forming a charge pattern on a microchip includes depositing a material on the surface of the microchip, and immersing the microchip in a fluid to develop charge in or on the material through interaction with the surrounding fluid.Type: GrantFiled: June 14, 2018Date of Patent: February 7, 2023Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Eugene M. Chow, JenPing Lu, Armin R. Volkel, Bing R. Hsieh, Gregory L. Whiting, Sean E. Doris
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Patent number: 11446864Abstract: Additive manufacturing compositions and methods for fabricating a conductive article with the same are provided. The additive manufacturing composition may include a 3D printable material and a metal precursor disposed in the 3D printable material. The metal precursor may include a metal salt, a metal particle, or combinations thereof. The method may include forming a first layer of the article on a substrate, where the first layer includes the additive manufacturing composition, forming a second layer of the article adjacent the first layer, and binding the first layer with the second layer to fabricate the article. The method may also include plating a metal on at least a portion of the article to fabricate the conductive article.Type: GrantFiled: March 11, 2020Date of Patent: September 20, 2022Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Junhua Wei, Anne Plochowietz, Kent Evans, Sean E. Doris
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Patent number: 11329304Abstract: Intermittent energy sources, including solar and wind, require scalable, low-cost, multi-hour energy storage solutions to be effectively incorporated into the grid. Redox-flow batteries offer a solution, but suffer from rapid capacity fade and low Coulombic efficiency due to the high permeability of redox-active species across the battery's membrane. Here we show that active-species crossover can be arrested by scaling the membrane's pore size to molecular dimensions and in turn increasing the size of the active material to be above the membrane's pore-size exclusion limit. When oligomeric redox-active organic molecules were paired with microporous polymer membranes, the rate of active-material crossover was either completely blocked or slowed more than 9,000-fold compared to traditional separators at minimal cost to ionic conductivity. In the case of the latter, this corresponds to an absolute rate of ROM crossover of less than 3 ?mol cm?2 day?1 (for a 1.Type: GrantFiled: May 26, 2017Date of Patent: May 10, 2022Assignees: The Regents of the University of California, The Board of Trustees of the University of IllinoisInventors: Brett A. Helms, Sean E. Doris, Ashleigh L. Ward, Peter D. Frischmann, Etienne Chenard, Nagarjuna Gavvalapalli, Jeffrey S. Moore
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Patent number: 11318455Abstract: Polymers of intrinsic microporosity are provided herein. Disclosed polymers of intrinsic microporosity include modified polymers of intrinsic microporosity that include negatively charged sites or crosslinking between monomer units. Systems making use of polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also described, such as electrochemical cells and ion separation systems. Methods for making and using polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also disclosed.Type: GrantFiled: June 10, 2020Date of Patent: May 3, 2022Assignee: The Regents of the University of CaliforniaInventors: Brett A. Helms, Changyi Li, Ashleigh Ward, Sean E. Doris, Peter D. Frischmann
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Publication number: 20210283837Abstract: Additive manufacturing compositions and methods for fabricating a conductive article with the same are provided. The additive manufacturing composition may include a 3D printable material and a metal precursor disposed in the 3D printable material. The metal precursor may include a metal salt, a metal particle, or combinations thereof. The method may include forming a first layer of the article on a substrate, where the first layer includes the additive manufacturing composition, forming a second layer of the article adjacent the first layer, and binding the first layer with the second layer to fabricate the article. The method may also include plating a metal on at least a portion of the article to fabricate the conductive article.Type: ApplicationFiled: March 11, 2020Publication date: September 16, 2021Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Junhua Wei, Anne Plochowietz, Kent Evans, Sean E. Doris
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Publication number: 20210210796Abstract: A system that includes an energy device having an active region configured to generate or consume electrical energy provided by an electrical current is discussed. A current limiter is disposed between the energy device and a current collector layer. The current limiter controls the current flow between the energy device and the current collector layer. A plurality of electrochemical transistors (ECTs) are arranged in an array such that each ECT in the array provides localized current control for the energy device. Each ECT includes a gate electrode, a drain electrode, a source electrode, and a channel disposed between the drain and the source electrodes. An electrolyte electrically couples the gate electrode to the channel such that an electrical signal at the gate electrode controls electrical conductivity of the channel. The current collector layer is a shared drain or source electrode for the ECTs.Type: ApplicationFiled: March 22, 2021Publication date: July 8, 2021Inventors: Sean E. Doris, Warren B. Jackson, Adrien Pierre
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Publication number: 20210190551Abstract: A sensor system includes a sensor configured to measure a parameter. The sensor system also includes a memory configured to record one or more occurrences when the parameter is outside of a predetermined range. The memory includes a wire, a counter-electrode, and an electrolyte.Type: ApplicationFiled: December 23, 2019Publication date: June 24, 2021Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Sean E. Doris, Kent Evans
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Patent number: 10971765Abstract: A system that includes an energy device having an active region configured to generate or consume electrical energy provided by an electrical current is discussed. A current limiter is disposed between the energy device and a current collector layer. The current limiter controls the current flow between the energy device and the current collector layer. A plurality of electrochemical transistors (ECTs) are arranged in an array such that each ECT in the array provides localized current control for the energy device. Each ECT includes a gate electrode, a drain electrode, a source electrode, and a channel disposed between the drain and the source electrodes. An electrolyte electrically couples the gate electrode to the channel such that an electrical signal at the gate electrode controls electrical conductivity of the channel. The current collector layer is a shared drain or source electrode for the ECTs.Type: GrantFiled: October 5, 2018Date of Patent: April 6, 2021Assignee: Palo Alto Research Center IncorporatedInventors: Sean E. Doris, Warren B. Jackson, Adrien Pierre
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Patent number: 10814649Abstract: A printing system includes a liquid ejector configured to deposit a curable layer on a surface of a substrate, the layer having a free surface and an interface between the layer and the substrate. A pre-curing device pre-cures the layer such that a first region closer to the free surface is less cured than a second region closer to the interface. The curing device includes a pre-curing initiator source configured to provide a pre-curing initiator that polymerizes the layer. The curing device also includes a pre-curing inhibitor source configured to deliver an inhibitor that inhibits polymerization of the layer. A particle delivery device delivers particles to the layer after the layer is pre-cured.Type: GrantFiled: December 5, 2018Date of Patent: October 27, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Warren B. Jackson, Kent A. Evans, Sean E. Doris
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Publication number: 20200306745Abstract: Polymers of intrinsic microporosity are provided herein. Disclosed polymers of intrinsic microporosity include modified polymers of intrinsic microporosity that include negatively charged sites or crosslinking between monomer units. Systems making use of polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also described, such as electrochemical cells and ion separation systems. Methods for making and using polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also disclosed.Type: ApplicationFiled: June 10, 2020Publication date: October 1, 2020Inventors: Brett A. Helms, Changyi Li, Ashleigh Ward, Sean E. Doris, Peter D. Frischmann
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Patent number: 10727488Abstract: Metal-sulfur energy storage devices also comprising new redox mediator compounds are described.Type: GrantFiled: August 11, 2015Date of Patent: July 28, 2020Assignees: The Massachusetts Institute of Technology, The Regents of the University of CaliforniaInventors: Brett A. Helms, Peter D. Frischmann, Yet-Ming Chiang, Frank Y. Fan, Sean E. Doris, Laura C. H. Gerber
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Patent number: 10710065Abstract: Polymers of intrinsic microporosity are provided herein. Disclosed polymers of intrinsic microporosity include modified polymers of intrinsic microporosity that include negatively charged sites or crosslinking between monomer units. Systems making use of polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also described, such as electrochemical cells and ion separation systems. Methods for making and using polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also disclosed.Type: GrantFiled: April 1, 2016Date of Patent: July 14, 2020Assignee: The Regents of the University of CaliforniaInventors: Brett A. Helms, Changyi Li, Ashleigh Ward, Sean E. Doris, Peter D. Frischmann
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Publication number: 20200180328Abstract: A printing system includes a liquid ejector configured to deposit a curable layer on a surface of a substrate, the layer having a free surface and an interface between the layer and the substrate. A pre-curing device pre-cures the layer such that a first region closer to the free surface is less cured than a second region closer to the interface. The curing device includes a pre-curing initiator source configured to provide a pre-curing initiator that polymerizes the layer. The curing device also includes a pre-curing inhibitor source configured to deliver an inhibitor that inhibits polymerization of the layer. A particle delivery device delivers particles to the layer after the layer is pre-cured.Type: ApplicationFiled: December 5, 2018Publication date: June 11, 2020Inventors: Warren B. Jackson, Kent A. Evans, Sean E. Doris
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Publication number: 20200112066Abstract: A system that includes an energy device having an active region configured to generate or consume electrical energy provided by an electrical current is discussed. A current limiter is disposed between the energy device and a current collector layer. The current limiter controls the current flow between the energy device and the current collector layer. A plurality of electrochemical transistors (ECTs) are arranged in an array such that each ECT in the array provides localized current control for the energy device. Each ECT includes a gate electrode, a drain electrode, a source electrode, and a channel disposed between the drain and the source electrodes. An electrolyte electrically couples the gate electrode to the channel such that an electrical signal at the gate electrode controls electrical conductivity of the channel. The current collector layer is a shared drain or source electrode for the ECTs.Type: ApplicationFiled: October 5, 2018Publication date: April 9, 2020Inventors: Sean E. Doris, Warren B. Jackson, Adrien Pierre
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Patent number: 10424751Abstract: One embodiment provides electronic device, which can include at least two organic electrochemical transistors (OECTs). A respective OECT includes a conductive channel, a gate electrically coupled to the conductive channel via a first electrolyte, and source and drain electrodes separated from each other by the conductive channel. The electrochemical potentials of redox-couples of the at least two organic electrochemical transistors are different, thereby resulting in the at least two organic electrochemical transistors having different threshold voltages. An alternative embodiment can provide an organic electrochemical transistor (OECT). The OECT can include a conductive channel, a gate electrically coupled to the conductive channel via a first electrolyte, and source and drain electrodes separated from each other by the conductive channel. The gate can include a conductive current collector and at least one redox-couple.Type: GrantFiled: November 1, 2017Date of Patent: September 24, 2019Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Sean E. Doris, Adrien Pierre
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Publication number: 20190131555Abstract: One embodiment provides electronic device, which can include at least two organic electrochemical transistors (OECTs). A respective OECT includes a conductive channel, a gate electrically coupled to the conductive channel via a first electrolyte, and source and drain electrodes separated from each other by the conductive channel. The electrochemical potentials of redox-couples of the at least two organic electrochemical transistors are different, thereby resulting in the at least two organic electrochemical transistors having different threshold voltages. An alternative embodiment can provide an organic electrochemical transistor (OECT). The OECT can include a conductive channel, a gate electrically coupled to the conductive channel via a first electrolyte, and source and drain electrodes separated from each other by the conductive channel. The gate can include a conductive current collector and at least one redox-couple.Type: ApplicationFiled: November 1, 2017Publication date: May 2, 2019Applicant: Palo Alto Research Center IncorporatedInventors: Sean E. Doris, Adrien Pierre
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Patent number: 10135015Abstract: One embodiment provides an oscillator. The oscillator can include an organic electrochemical transistor, which comprises a channel and a dynamic gate. The channel can include one of: a conductive polymer, a conductive inorganic material, and a small-molecule material. An electrochemical potential of the dynamic gate can vary substantially periodically, thereby resulting in the organic electrochemical transistor having a drain current that varies substantially periodically.Type: GrantFiled: November 2, 2017Date of Patent: November 20, 2018Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventor: Sean E. Doris
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Publication number: 20180294232Abstract: A method of forming a charge pattern on a microchip includes depositing a material on the surface of the microchip, and immersing the microchip in a fluid to develop charge in or on the material through interaction with the surrounding fluid.Type: ApplicationFiled: June 14, 2018Publication date: October 11, 2018Inventors: Eugene M. Chow, JenPing Lu, Armin R. Volkel, Bing R. Hsieh, Gregory L. Whiting, Sean E. Doris