Patents by Inventor James C. Stevens
James C. Stevens 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: 11952427Abstract: Provided herein are agonistic antibodies, or antigen binding portions thereof, that bind to human CD40 and comprise improved heavy and light chain variable regions that impart improved yield and reduced aggregation. The invention also provides methods of treatment of cancer or chronic infection by administering the antibodies of the invention to a subject in need thereof.Type: GrantFiled: March 15, 2022Date of Patent: April 9, 2024Assignees: Bristol-Myers Squibb Company, CytomX Therapeutics, Inc.Inventors: Bryan C. Barnhart, Brigitte Devaux, Aaron P. Yamniuk, Shannon L. Okada, Brenda L. Stevens, James William West
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Publication number: 20240110459Abstract: The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations. (FIG. 2).Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Inventors: Lars HOVDA, James C. STEVENS, Dan MUELLER, Praveen GONUGUNTLA
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Patent number: 11879305Abstract: The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations.Type: GrantFiled: August 19, 2021Date of Patent: January 23, 2024Assignee: CONOCOPHILLIPS COMPANYInventors: Lars Hovda, James C. Stevens, Dan Mueller, Amal Phadke, Praveen Gonuguntla
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Publication number: 20230332480Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.Type: ApplicationFiled: May 11, 2023Publication date: October 19, 2023Inventors: Lars HOVDA, Dan MUELLER, James C. STEVENS, Amal PHADKE, Praveen GONUGUNTLA
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Publication number: 20230228173Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).Type: ApplicationFiled: March 2, 2023Publication date: July 20, 2023Inventors: Rick WATTS, Stein HAAVARDSTEIN, Lars HOVDA, James C. STEVENS, Dan MUELLER, Brett Borland, Amal PHADKE, Praveen GONUGUNTLA
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Patent number: 11686175Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.Type: GrantFiled: August 19, 2021Date of Patent: June 27, 2023Assignee: CONOCOPHILLIPS COMPANYInventors: Lars Hovda, Dan Mueller, James C. Stevens, Amal Phadke, Praveen Gonuguntla
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Patent number: 11608718Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).Type: GrantFiled: August 31, 2021Date of Patent: March 21, 2023Assignee: CONOCOPHILLIPS COMPANYInventors: Rick Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Dan Mueller, Brett Borland, Amal Phadke, Praveen Gonuguntla
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Publication number: 20220056783Abstract: The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool (1) is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing (10) to fill the outer annulus (9) with cement. The tool (1) has a cylindrical wall (3) which is formed from steel (11) and elastomeric (5) elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations. (FIG. 2).Type: ApplicationFiled: August 19, 2021Publication date: February 24, 2022Inventors: Lars HOVDA, James C. STEVENS, Dan MUELLER, Amal PHADKE, Praveen GONUGUNTLA
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Publication number: 20220056780Abstract: The invention relates to a cementing tool (1) and method for setting a cement plug. Instead of the conventional “balanced plug”, the technique involves pumping cement whilst pulling and rotating the tool. The cementing tool (1) includes nozzles (9) for jetting cement which are located in a relatively narrow region (8) of the tool and a larger diameter choke region (5) proximal of the nozzles (9). The end of the tool (11) is closed off and tapered. The tool is passed down the well to a location where it is desired to set a plug, then cement is injected whilst rotating and withdrawing the tool. The jets of cement help displace existing fluid in the well thereby reducing mixing of the existing fluid with the cement, The choke region (5) increases the flow energy, whilst the tapered end (11) helps prevent disruption to the cement as the tool is withdrawn.Type: ApplicationFiled: August 19, 2021Publication date: February 24, 2022Inventors: Lars HOVDA, Dan MUELLER, James C. STEVENS, Amal PHADKE
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Publication number: 20220056782Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.Type: ApplicationFiled: August 19, 2021Publication date: February 24, 2022Inventors: Lars HOVDA, Dan MUELLER, James C. STEVENS, Amal PHADKE, Praveen GONUGUNTLA
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Publication number: 20210388696Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).Type: ApplicationFiled: August 31, 2021Publication date: December 16, 2021Inventors: Rick WATTS, Stein HAAVARDSTEIN, Lars HOVDA, James C. STEVENS, Dan MUELLER, Brett BORLAND, Amal PHADKE, Praveen GONUGUNTLA
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Patent number: 11136862Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).Type: GrantFiled: August 2, 2019Date of Patent: October 5, 2021Assignee: CONOCOPHILLIPS COMPANYInventors: Rick Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Dan Mueller, Brett Borland, Amal Phadke, Praveen Gonuguntla
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Publication number: 20200040707Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).Type: ApplicationFiled: August 2, 2019Publication date: February 6, 2020Inventors: Rick WATTS, Stein HAAVARDSTEIN, Lars HOVDA, James C. STEVENS, Dan MUELLER, Brett BORLAND, Amal PHADKE, Praveen GONUGUNTLA
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Publication number: 20170012157Abstract: A light splitting optical module that converts incident light into electrical energy, the module including a solid optical element comprising an input end for receiving light, a first side, and a second side spaced from the first side, a first solar cell adjacent to the first side of the solid optical element, and a second solar cell adjacent to the second side of the solid optical element. The first solar cell is positioned to absorb a first subset of incident light and reflect a first remainder of the incident light to the second solar cell through the solid optical element, wherein the first solar cell has a lower band gap than the second cell.Type: ApplicationFiled: December 22, 2014Publication date: January 12, 2017Inventors: Carissa Eisler, Weijun Zhou, Emily D. Kosten, Emily C. Warmann, Carrie E. Hofmann, Harry A. Atwater, Rebekah K. Feist, James C. Stevens
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Publication number: 20160322224Abstract: The present invention provides methods for using single source organometallic precursors in the fabrication of polycrystalline Group III-Group V compounds, preferably semiconductor compounds. The present invention teaches how to select organometallic ligands in single-source precursors in order to control the stoichiometry of the corresponding Group III-Group V compounds derived from these precursors. The present invention further teaches how to anneal precursors in the presence of one or more flux agents in order to increase the crystalline grain size of polycrystalline Group III-Group V compounds derived from organometallic precursors. This helps to provide Group III-Group V semiconductors with better electronic properties. The flux layer also helps to control the stoichiometry of the Group III-Group V compounds.Type: ApplicationFiled: December 10, 2014Publication date: November 3, 2016Inventors: Robert J. WRIGHT, Anatoliy N. SOKOLOV, George L. ATHENS, Peter N. NICKIAS, James C. STEVENS, Liam L. SPENCER, Bruce B. GERHART, Anna M. PICKENS
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Patent number: 9243090Abstract: A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.Type: GrantFiled: May 15, 2014Date of Patent: January 26, 2016Assignee: Dow Global Technologies LLCInventors: Daniel J. Arriola, Edmund M. Carnahan, Yunwa Wilson Cheung, David D. Devore, David D. Graf, Phillip D. Hustad, Roger L. Kuhlman, Colin Li Pi Shan, Benjamin C. Poon, Gordon R. Roof, James C. Stevens, Pamela J. Stirn, Timothy T. Wenzel
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Publication number: 20150287842Abstract: A photovoltaic system that converts incident light into electrical energy that includes a light trapping optical module having a light randomizing dielectric slab with a first surface and a second surface, a first cell adjacent to the first surface of the slab that has a bandgap of lower energy than the energy of absorption onset of the dielectric slab, at least one filter element in optical contact with the second surface of the dielectric slab, and a sub-cell array with a plurality of photovoltaic sub-cells, wherein at least one of the sub-cells has a first surface that is in optical contact with the at least one filter element.Type: ApplicationFiled: August 30, 2013Publication date: October 8, 2015Inventors: Emily D. Kosten, Christofer A. Flowers, John V. Lloyd, Carrie E. Hofmann, Harry A. Atwater, Emily C. Warmann, James C. Stevens, Rebekah K. Feist, Weijun Zhou, Michael E. Mills, Narayan Ramesh
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Publication number: 20150267032Abstract: A composition comprising a phase separated block copolymer and an inorganic dielectric nanoparticle, wherein the nanoparticle is dispersed in the copolymer and is present primarily in one phase. For example, a Ti02 nanocomposite can be created via the in situ formation of Ti02 within a silane-grafted OBC. Taking advantage of the phase morphology of the OBC and the differential swelling of the hard and soft segments, due to their inherent crystallinity, enables the selective incorporation of Ti02 nanoparticles into the soft segments of the OBC.Type: ApplicationFiled: October 14, 2013Publication date: September 24, 2015Inventors: Phillip D. Hustad, Stephanie L. Potisek, Rebekah K. Feist, James C. Stevens, Michael E. Mills, Yuanqiao Rao, Eddy I. Garcia-Meitin
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Publication number: 20150255637Abstract: The present invention provides strategies for improving the quality of the insulating layer in MIS and SIS devices in which the insulator layer interfaces with at least one pnictide-containing film The principles of the present invention are based at least in part on the discovery that very thin (20 nm or less) insulating films comprising a chalcogenide such as i-ZnS are surprisingly superior tunnel barriers in MIS and SIS devices incorporating pnictide semiconductors. In one aspect, the present invention relates to a photovoltaic device, comprising: a semiconductor region comprising at least one pnictide semiconductor; an insulating region electrically coupled to the semiconductor region, wherein the insulating region comprises at least one chalcogenide and has a thickness in the range from 0.5 nm to 20 nm; and a rectifying region electrically coupled to the semiconductor region in a manner such that the insulating region is electrically interposed between the collector region and the semiconductor region.Type: ApplicationFiled: October 7, 2013Publication date: September 10, 2015Inventors: Jeffrey P. Bosco, Rebekah K. Feist, Harry A. Atwater, Marty W. Degroot, James C. Stevens, Gregory M. Kimball
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Publication number: 20150221800Abstract: A light splitting optical module that converts incident light into electrical energy, the module including a solid optical element comprising an input end for receiving light, a first side, and a second side spaced from the first side, a first solar cell adjacent to the first side of the solid optical element, and a second solar cell adjacent to the second side of the solid optical element. The first solar cell is positioned to absorb a first subset of incident light and reflect a first remainder of the incident light to the second solar cell through the solid optical element.Type: ApplicationFiled: August 30, 2013Publication date: August 6, 2015Inventors: Carissa N. Eisler, Emily D. Kosten, Harry A. Atwater, Emily C. Warmann, Carrie E. Hofmann, Rebekah K. Feist, James C. Stevens, Weijun Zhou, Michael E. Mills, Narayan Ramesh