Patents by Inventor David A. Simpson
David A. Simpson 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: 20250025882Abstract: Described herein are systems and methods used for washing needle assemblies with multiple needles.Type: ApplicationFiled: October 4, 2024Publication date: January 23, 2025Applicant: Waters Technologies CorporationInventors: Rose Solow, David A. Simpson, Colin F. Fredette, Marc E. Lemelin, Joshua A. Burnett
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Patent number: 12121891Abstract: Described herein are systems and methods used for washing needle assemblies with multiple needles.Type: GrantFiled: August 16, 2021Date of Patent: October 22, 2024Assignee: Waters Technologies CorporationInventors: Rose Solow, David A. Simpson, Colin F. Fredette, Marc E. Lemelin, Joshua A. Burnett
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Publication number: 20240201142Abstract: A liquid chromatography sample manager includes a thermal chamber, a sample platter mounted in the thermal chamber, and a needle drive including a base having a shaft configured to rotate about a vertical axis, the base attachable to an interior of a sample manager of a liquid chromatography system. The needle drive further includes a needle assembly attached to the base, the needle assembly including a sample needle, and a drive system attached to the base, the drive system including a sample needle motor configured to impart vertical movement of the sample needle. The liquid chromatography sample manager further includes a sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.Type: ApplicationFiled: February 26, 2024Publication date: June 20, 2024Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Marc E. Lemelin
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Patent number: 11913916Abstract: A liquid chromatography sample manager includes a thermal chamber, a sample platter mounted in the thermal chamber, and a needle drive including a base having a shaft configured to rotate about a vertical axis, the base attachable to an interior of a sample manager of a liquid chromatography system. The needle drive further includes a needle assembly attached to the base, the needle assembly including a sample needle, and a drive system attached to the base, the drive system including a sample needle motor configured to impart vertical movement of the sample needle. The liquid chromatography sample manager further includes a sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.Type: GrantFiled: March 16, 2021Date of Patent: February 27, 2024Assignee: Waters Technologies CorporationInventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Marc E. Lemelin
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Publication number: 20240060939Abstract: A method and a fluidic network for acquiring and injecting a chromatographic sample into a chromatography system flow include a metering pump module, a sample needle, a needle seal and an injection valve. The metering pump module includes a metering pump and a pressure transducer in serial fluidic communication. When the injection valve is in a first valve state, the injection valve is configured to fluidically terminate ports of the metering pump module. When the injection valve is in a second valve state, the injection valve is configured to fluidically couple a fluidic path that includes the metering pump module and sample needle into the system flow of a chromatography system without resulting in a substantial change in the pressure of the system flow.Type: ApplicationFiled: October 30, 2023Publication date: February 22, 2024Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson
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Patent number: 11879875Abstract: A liquid chromatography sample manager includes a sampling mechanism; a sample platter mounted in the sampling mechanism, the sample platter configured to rotate about a first vertical axis; a needle arm mounted within the sampling mechanism, the needle arm configured to rotate about a second vertical axis; and a sample delivery system in fluidic communication with solvent delivery system, the sample delivery system including a sample needle attached to the needle arm, the sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.Type: GrantFiled: March 16, 2021Date of Patent: January 23, 2024Assignee: WATERS TECHNOLOGIES CORPORATIONInventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Marc E. Lemelin
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Patent number: 11835496Abstract: A method and a fluidic network for acquiring and injecting a chromatographic sample into a chromatography system flow include a metering pump module, a sample needle, a needle seal and an injection valve. The metering pump module includes a metering pump and a pressure transducer in serial fluidic communication. When the injection valve is in a first valve state, the injection valve is configured to fluidically terminate ports of the metering pump module. When the injection valve is in a second valve state, the injection valve is configured to fluidically couple a fluidic path that includes the metering pump module and sample needle into the system flow of a chromatography system without resulting in a substantial change in the pressure of the system flow.Type: GrantFiled: December 18, 2020Date of Patent: December 5, 2023Assignee: Waters Technologies CorporationInventors: Joshua A. Burnett, Rose Solow, David A. Simpson
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Patent number: 11774415Abstract: Described is a metering pump that may be used to meter volumes of sample in a chromatography system. The metering pump has a modular configuration that allows for separation of a head pod from a drive assembly for easy serviceability. The head pod includes a pump head, cartridge housing, seal wash housing and plunger. The drive assembly can be implemented in an inline drive configuration. Alternatively, the drive assembly can be implemented in an offset drive configuration in which a stepper motor is displaced laterally from other drive assembly components but is coupled through a belt and pulley system.Type: GrantFiled: March 25, 2021Date of Patent: October 3, 2023Assignee: WATERS TECHNOLOGIES CORPORATIONInventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Peter Osswald, John M. Auclair, Michael LeBeau
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Patent number: 11555804Abstract: A liquid chromatography system including a solvent delivery system, a sample delivery system in fluidic communication with solvent delivery system, a liquid chromatography column located downstream from the solvent delivery system and the sample delivery system, a detector located downstream from the liquid chromatography column, a thermal chamber housing at least one of the solvent delivery system, the sample delivery system, the liquid chromatography column and the detector, an engine configured to control the temperature in the thermal chamber, a heatsink operably connected to the engine, a first temperature sensor in the thermal chamber, a second temperature sensor, and a computer system configured to receive temperature information from each of the first and second temperature sensors, and implement a method for controlling temperature in the thermal chamber.Type: GrantFiled: July 19, 2019Date of Patent: January 17, 2023Assignee: WATERS TECHNOLOGIES CORPORATIONInventors: David A. Simpson, Cameron Chaput, Miguel M. Soares
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Publication number: 20220048035Abstract: Described herein are systems and methods used for washing needle assemblies with multiple needles.Type: ApplicationFiled: August 16, 2021Publication date: February 17, 2022Applicant: Waters Technologies CorporationInventors: Rose Solow, David A. Simpson, Colin F. Fredette, Marc E. Lemelin, Joshua A. Burnett
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Patent number: 11162923Abstract: A twist-lock compliant needle including a housing component surrounding a needle holder holding a rigidly mounted needle, the housing component including a biasing element disposed therein, wherein the biasing element compresses as a needle tip of the needle contacts a surface is provided. An associated method is also provided.Type: GrantFiled: July 16, 2019Date of Patent: November 2, 2021Assignee: WATERS TECHNOLOGIES CORPORATIONInventors: David A. Simpson, Joshua A. Burnett, John M. Auclair
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Publication number: 20210302397Abstract: Described is a metering pump that may be used to meter volumes of sample in a chromatography system. The metering pump has a modular configuration that allows for separation of a head pod from a drive assembly for easy serviceability. The head pod includes a pump head, cartridge housing, seal wash housing and plunger. The drive assembly can be implemented in an inline drive configuration. Alternatively, the drive assembly can be implemented in an offset drive configuration in which a stepper motor is displaced laterally from other drive assembly components but is coupled through a belt and pulley system.Type: ApplicationFiled: March 25, 2021Publication date: September 30, 2021Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Peter Osswald, John M. Auclair, Michael LeBeau
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Publication number: 20210293761Abstract: A liquid chromatography sample manager includes a sampling mechanism; a sample platter mounted in the sampling mechanism, the sample platter configured to rotate about a first vertical axis; a needle arm mounted within the sampling mechanism, the needle arm configured to rotate about a second vertical axis; and a sample delivery system in fluidic communication with solvent delivery system, the sample delivery system including a sample needle attached to the needle arm, the sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.Type: ApplicationFiled: March 16, 2021Publication date: September 23, 2021Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Marc E. Lemelin
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Publication number: 20210293762Abstract: A liquid chromatography sample manager includes a thermal chamber, a sample platter mounted in the thermal chamber, and a needle drive including a base having a shaft configured to rotate about a vertical axis, the base attachable to an interior of a sample manager of a liquid chromatography system. The needle drive further includes a needle assembly attached to the base, the needle assembly including a sample needle, and a drive system attached to the base, the drive system including a sample needle motor configured to impart vertical movement of the sample needle. The liquid chromatography sample manager further includes a sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.Type: ApplicationFiled: March 16, 2021Publication date: September 23, 2021Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson, Marc E. Lemelin
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Publication number: 20210190734Abstract: Described are a method and a fluidic network for acquiring and injecting a chromatographic sample into a chromatography system flow. The fluidic network includes a metering pump module, a sample needle, a needle seal and an injection valve. The metering pump module includes a metering pump and a pressure transducer in serial fluidic communication. When the injection valve is in a first valve state, the injection valve is configured to fluidically terminate ports of the metering pump module. When the injection valve is in a second valve state, the injection valve is configured to fluidically couple a fluidic path that includes the metering pump module and sample needle into the system flow of a chromatography system without resulting in a substantial change in the pressure of the system flow.Type: ApplicationFiled: December 18, 2020Publication date: June 24, 2021Inventors: Joshua A. Burnett, Rose Solow, David A. Simpson
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Patent number: 11002713Abstract: A liquid chromatography sample organizer includes a first chamber, a plurality of stacked sample organizer shelves mounted within the first chamber each individually configured to store a sample-vial carrier including a sample, and a shelf magnet affixed to a surface of each of the plurality of stacked sample organizer shelves. A portion of the first chamber is configured to be located adjacent to, and open to, a sample manager configured to inject liquid chromatography samples into a chromatographic flow stream. Disclosed further is a liquid chromatography system having the sample organizer, a sample drawer, and a method of transferring samples between a sample manager and the sample organizer.Type: GrantFiled: June 12, 2019Date of Patent: May 11, 2021Assignee: WATERS TECHNOLOGIES CORPORATIONInventors: David A. Simpson, Joshua A. Burnett, Marc E. Lemelin, Paul Keenan, Peter Osswald
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Publication number: 20200025724Abstract: A liquid chromatography system including a solvent delivery system, a sample delivery system in fluidic communication with solvent delivery system, a liquid chromatography column located downstream from the solvent delivery system and the sample delivery system, a detector located downstream from the liquid chromatography column, a thermal chamber housing at least one of the solvent delivery system, the sample delivery system, the liquid chromatography column and the detector, an engine configured to control the temperature in the thermal chamber, a heatsink operably connected to the engine, a first temperature sensor in the thermal chamber, a second temperature sensor, and a computer system configured to receive temperature information from each of the first and second temperature sensors, and implement a method for controlling temperature in the thermal chamber.Type: ApplicationFiled: July 19, 2019Publication date: January 23, 2020Inventors: David A. Simpson, Cameron Chaput, Miguel M. Soares
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Publication number: 20200025722Abstract: A twist-lock compliant needle including a housing component surrounding a needle holder holding a rigidly mounted needle, the housing component including a biasing element disposed therein, wherein the biasing element compresses as a needle tip of the needle contacts a surface is provided. An associated method is also provided.Type: ApplicationFiled: July 16, 2019Publication date: January 23, 2020Inventors: David A. Simpson, Joshua A. Burnett, John M. Auclair
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Publication number: 20190383776Abstract: A liquid chromatography sample organizer includes a first chamber, a plurality of stacked sample organizer shelves mounted within the first chamber each individually configured to store a sample-vial carrier including a sample, and a shelf magnet affixed to a surface of each of the plurality of stacked sample organizer shelves. A portion of the first chamber is configured to be located adjacent to, and open to, a sample manager configured to inject liquid chromatography samples into a chromatographic flow stream. Disclosed further is a liquid chromatography system having the sample organizer, a sample drawer, and a method of transferring samples between a sample manager and the sample organizer.Type: ApplicationFiled: June 12, 2019Publication date: December 19, 2019Inventors: David A. Simpson, Joshua A. Burnett, Marc E. Lemelin
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Patent number: 9267130Abstract: Polypeptides having nucleic acid binding activity are provided. Methods of using polypeptides having nucleic acid binding activity are provided. Fusion proteins and methods of using fusion proteins are provided. Fusion proteins comprising a polymerase and a nucleic acid binding polypeptide are provided. Fusion proteins comprising a reverse transcriptase and a nucleic acid binding polypeptide are provided. Methods are provided for amplifying a nucleic acid sequence using a fusion protein comprising a nucleic acid binding polypeptide and a polymerase. Methods are provided for amplifying a nucleic acid sequence using a fusion protein comprising a nucleic acid binding polypeptide and a reverse transcriptase.Type: GrantFiled: September 13, 2012Date of Patent: February 23, 2016Assignee: APPLIED BIOSYSTEMS, LLCInventors: Patrick K. Martin, David A. Simpson, Christine D. Hardy