Patents by Inventor David J. Roach
David J. Roach 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: 20260092892Abstract: Some embodiments described herein relate to capillary-containing cartridges suitable for use with capillary electrophoresis instruments. Embodiments described herein generally relate to cartridges that include a transfer capillary coupled to a separation capillary. The transfer capillary can be configured to be disposed in sample reservoirs and/or buffer reservoirs. Suction applied through a sheath interface of the transfer capillary and the separation capillary can draw sample/buffer from such reservoirs and bring the sample/buffer into contact with the separation capillary. The separation capillary can be configured for separation of analytes contained within the sample, for example when an electric potential (i.e., voltage) is applied across the separation capillary.Type: ApplicationFiled: December 9, 2025Publication date: April 2, 2026Inventors: Roland Y. WANG, Philip H. CHAO, Allen R. BORONKAY, David J. ROACH, Hui XU, Joshua I. MOLHO, Tom Weisan YANG
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Patent number: 12540920Abstract: Some embodiments described herein relate to capillary-containing cartridges suitable for use with capillary electrophoresis instruments. Embodiments described herein generally relate to cartridges that include a transfer capillary coupled to a separation capillary. The transfer capillary can be configured to be disposed in sample reservoirs and/or buffer reservoirs. Suction applied through a sheath interface of the transfer capillary and the separation capillary can draw sample/buffer from such reservoirs and bring the sample/buffer into contact with the separation capillary. The separation capillary can be configured for separation of analytes contained within the sample, for example when an electric potential (i.e., voltage) is applied across the separation capillary.Type: GrantFiled: September 1, 2023Date of Patent: February 3, 2026Assignee: ProteinSimpleInventors: Roland Y. Wang, Philip H. Chao, Allen R. Boronkay, David J. Roach, Hui Xu, Joshua I. Molho, Tom Weisan Yang
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Publication number: 20250339855Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: ApplicationFiled: July 9, 2025Publication date: November 6, 2025Inventors: Cheng ZHOU, Hui XU, Roland Y. WANG, David J. ROACH, Jessica DERMODY, Tom Weisan YANG, Jiaqi WU
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Patent number: 12383896Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: GrantFiled: June 4, 2024Date of Patent: August 12, 2025Assignee: ProteinSimpleInventors: Cheng Zhou, Hui Xu, Roland Y. Wang, David J. Roach, Jessica Dermody, Tom Weisan Yang, Jiaqi Wu
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Publication number: 20250208094Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: ApplicationFiled: December 24, 2024Publication date: June 26, 2025Applicant: ProteinSimpleInventors: David J. ROACH, Tom Weisan YANG, Hui XU
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Patent number: 12216082Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: GrantFiled: June 30, 2023Date of Patent: February 4, 2025Assignee: ProteinSimpleInventors: David J. Roach, Tom Weisan Yang, Hui Xu
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Publication number: 20250033043Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: ApplicationFiled: June 4, 2024Publication date: January 30, 2025Applicant: ProteinSimpleInventors: Cheng ZHOU, Hui XU, Roland Y. WANG, David J. ROACH, Jessica DERMODY, Tom Weisan YANG, Jiaqi WU
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Patent number: 12023670Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: GrantFiled: July 21, 2022Date of Patent: July 2, 2024Assignee: ProteinSimpleInventors: Cheng Zhou, Hui Xu, Roland Y. Wang, David J. Roach, Jessica Dermody, Tom Weisan Yang, Jiaqi Wu
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Publication number: 20240210352Abstract: Some embodiments described herein relate to capillary-containing cartridges suitable for use with capillary electrophoresis instruments. Embodiments described herein generally relate to cartridges that include a transfer capillary coupled to a separation capillary. The transfer capillary can be configured to be disposed in sample reservoirs and/or buffer reservoirs. Suction applied through a sheath interface of the transfer capillary and the separation capillary can draw sample/buffer from such reservoirs and bring the sample/buffer into contact with the separation capillary. The separation capillary can be configured for separation of analytes contained within the sample, for example when an electric potential (i.e., voltage) is applied across the separation capillary.Type: ApplicationFiled: September 1, 2023Publication date: June 27, 2024Applicant: ProteinSimpleInventors: Roland Y. WANG, Philip H. CHAO, Allen R. BORONKAY, David J. ROACH, Hui XU, Joshua I. MOLHO, Tom Weisan YANG
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Publication number: 20240183820Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: ApplicationFiled: June 30, 2023Publication date: June 6, 2024Applicant: ProteinSimpleInventors: David J. ROACH, Tom Weisan YANG, Hui XU
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Patent number: 11726058Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: GrantFiled: October 5, 2020Date of Patent: August 15, 2023Assignee: ProteinSimpleInventors: David J. Roach, Tom Weisan Yang, Hui Xu
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Publication number: 20230062228Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: ApplicationFiled: July 21, 2022Publication date: March 2, 2023Applicant: ProteinSimpleInventors: Cheng ZHOU, Hui XU, Roland Y. WANG, David J. ROACH, Jessica DERMODY, Tom Weisan YANG, Jiaqi WU
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Patent number: 11420202Abstract: Embodiments include systems, apparatuses, and methods to efficiently separate analytes in a sample and elute fractions of the separated analytes. In some embodiments, a method includes introducing a sample in a capillary with a first end ionically coupled to a first running buffer and a second end ionically coupled to a second running buffer to form a pH gradient. The method includes applying a voltage between the first running buffer and the second running buffer, to separate a plurality of analytes in the sample. The method includes disposing the second end of the capillary in a collection well including a chemical mobilizer and applying a voltage to elute one or more analytes from the plurality of analytes in the sample, that have been separated, into the collection well. Embodiments include detection methods to monitor separation of analytes, mobilization of analytes, and/or elution of fractions containing analytes.Type: GrantFiled: August 31, 2021Date of Patent: August 23, 2022Assignee: ProteinSimpleInventors: Cheng Zhou, Hui Xu, Roland Y. Wang, David J. Roach, Jessica Dermody, Tom Weisan Yang, Jiaqi Wu
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Publication number: 20210231607Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: ApplicationFiled: October 5, 2020Publication date: July 29, 2021Applicant: ProteinSimpleInventors: David J. ROACH, Tom Weisan YANG, Hui XU
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Patent number: 10794860Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: GrantFiled: July 12, 2018Date of Patent: October 6, 2020Assignee: ProteinSimpleInventors: David J. Roach, Tom Weisan Yang, Hui Xu
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Publication number: 20180321189Abstract: A system includes a housing, a cartridge retainer disposed within the housing, a detection assembly disposed within the housing, and a reagent tray holder movably disposed in the housing. The cartridge retainer configured to receive a capillary cartridge having a capillary. The detection assembly includes at least one emitter, a first detector, and a second detector. The detection assembly is configured to transition between a first configuration, in which the first detector detects a first output of the at least one emitter, and a second configuration, in which the second detector detects a second output of the at least one emitter. The reagent tray holder is configured to move relative to the cartridge retainer to place the capillary of the capillary cartridge in fluid communication with a reagent volume.Type: ApplicationFiled: July 12, 2018Publication date: November 8, 2018Applicant: ProteinSimpleInventors: David J. ROACH, Tom Weisan YANG, Hui XU
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Patent number: 8940232Abstract: An automated assay system is described with stations for placement of materials to be used in an assay of materials inside capillaries and an automated gripper for manipulating capillaries. The system includes a separation and immobilization station where reactions inside the capillaries take place and a detector station where photoemissions from the capillary reactions are detected. The photoemissions from the capillaries may be displayed as line graphs or in columns of a pseudo-gel image resembling the familiar Western gel blot. An automated control system has a user interface by which an operator can select a run protocol and define the locations of samples and reagents to be used in the protocol run: Following the setup the control system will cause the automated system to execute the protocol, then display the results in a selected display format.Type: GrantFiled: February 27, 2013Date of Patent: January 27, 2015Assignee: ProteinSimpleInventors: David J. Roach, Tom W. Yang, Roger A. O'Neill, Robert T. Loder, Jr.
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Publication number: 20120213667Abstract: An automated assay system is described with stations for placement of materials to be used in an assay of materials inside capillaries and an automated gripper for manipulating capillaries. The system includes a separation and immobilization station where reactions inside the capillaries take place and a detector station where photoemissions from the capillary reactions are detected. The photoemissions from the capillaries may be displayed as line graphs or in columns of a pseudo-gel image resembling the familiar Western gel blot. An automated control system has a user interface by which an operator can select a run protocol and define the locations of samples and reagents to be used in the protocol run. Following the setup the control system will cause the automated system to execute the protocol, then display the results in a selected display format.Type: ApplicationFiled: September 19, 2011Publication date: August 23, 2012Applicant: ProteinSimpleInventors: David J. Roach, Tom W. Yang, Roger A. O'Neill, Robert T. Loder, JR., Peter B. Vander Horn
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Patent number: 8021611Abstract: An automated assay system is described with stations for placement of materials to be used in an assay of materials inside capillaries and an automated gripper for manipulating capillaries. The system includes a separation and immobilization station where reactions inside the capillaries take place and a detector station where photoemissions from the capillary reactions are detected. The photoemissions from the capillaries may be displayed as line graphs or in columns of a pseudo-gel image resembling the familiar Western gel blot. An automated control system has a user interface by which an operator can select a run protocol and define the locations of samples and reagents to be used in the protocol run. Following the setup the control system will cause the automated system to execute the protocol, then display the results in a selected display format.Type: GrantFiled: April 10, 2006Date of Patent: September 20, 2011Assignee: ProteinSimpleInventors: David J. Roach, Tom W. Yang, Roger A. O'Neill, Robert T. Loder, Jr., Peter B. Vander Horn
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Publication number: 20110011740Abstract: An automated assay system is described with stations for placement of materials to be used in an assay of materials inside capillaries and an automated gripper for manipulating capillaries. The system includes a separation/detection station where reactions inside the capillaries take place and photoemissions from the capillary reactions are detected. The photoemissions from the capillaries may be displayed as line graphs or in columns of a pseudo-gel image resembling the familiar Western gel blot. An automated control system has a user interface by which an operator can select a run protocol and define the locations of samples and reagents to be used in the protocol run. Following the setup the control system will cause the automated system to execute the protocol, then display the results in a selected display format.Type: ApplicationFiled: April 19, 2010Publication date: January 20, 2011Inventors: David J. Roach, Tom W. Yang