Patents by Inventor David Wen
David Wen 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: 12275708Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: GrantFiled: February 15, 2024Date of Patent: April 15, 2025Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Publication number: 20240254088Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: ApplicationFiled: February 15, 2024Publication date: August 1, 2024Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Patent number: 11932603Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: GrantFiled: April 7, 2022Date of Patent: March 19, 2024Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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LABELS COMPRISING DIBROMOPYRIDAZINEDIONES FOR IMMUNOASSAYS AND METHODS OF PRODUCTION AND USE THEREOF
Publication number: 20240010841Abstract: Labels that include dibromopyridazinedione attached to signal molecules are disclosed, along with methods of producing and using same. Also disclosed are conjugates of the label attached to an analyte-specific binder, as well as methods of producing and using same. Kits containing the labels and/or conjugates are also disclosed, along with microfluidics devices containing same.Type: ApplicationFiled: November 10, 2021Publication date: January 11, 2024Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Yali Yang, David Wen, Bogdan Draghici, Yi Feng Zheng, Raphael Bartz, Qingping Jiang, Roland Janzen, Joshua Whalen, Ling Ngo, William Bedzyk -
Publication number: 20220227711Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: ApplicationFiled: April 7, 2022Publication date: July 21, 2022Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Patent number: 11332445Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: GrantFiled: February 26, 2020Date of Patent: May 17, 2022Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Publication number: 20220071315Abstract: A seam structure of protective clothing that is capable of being formed quickly and has high sealing performance provided includes: a first cloth including a first side surface and a second side surface opposite to each other; a second cloth welded to the first cloth and including a first surface and a second surface opposite to each other, wherein the first surface is abutted against and welded to the first side surface to form a first welding portion; a sealing cloth including a first sealing section and a third sealing section, wherein the first sealing section is abutted against and welded to the second side surface of the first cloth to form a second welding portion, and the third sealing section is abutted against and welded to the second surface of the second cloth to form a fourth welding portion.Type: ApplicationFiled: September 9, 2020Publication date: March 10, 2022Inventor: David WEN
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Patent number: 10859504Abstract: The present invention relates to methods of enhancing chemiluminescence from a chemiluminescent label comprising contacting a chemiluminescent label with an acid in the presence of a degradable cationic surfactant and hydrogen peroxide followed by the addition of a base. Related kits containing such degradable cationic surfactant are also provided. The degradable cationic surfactant can compress light emission time of the chemiluminescent label to an extent that is comparable to or shorter than conventional surfactants. The degradable cationic surfactant can also increase chemiluminescence of the chemiluminescent label, providing increased light emission output that is comparable to conventional surfactants.Type: GrantFiled: September 7, 2018Date of Patent: December 8, 2020Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Wen
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Patent number: 10710962Abstract: Zwitterion-containing compounds for the modification of hydrophobic molecules to improve their solubility and/or to lower their non-specific binding as provided. The zwitterion-containing compounds may be suitable for modification of detectable labels such as biotin and fluorescein to improve their solubility. The zwitterion-containing compounds may also be useful for the preparation of conjugates of proteins, peptides and other macromolecules or for crosslinking molecules and/or macromolecules.Type: GrantFiled: May 28, 2016Date of Patent: July 14, 2020Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, David Wen, Qingping Jiang
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Publication number: 20200190037Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: ApplicationFiled: February 26, 2020Publication date: June 18, 2020Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Publication number: 20190234883Abstract: The present invention relates to methods of enhancing chemiluminescence from a chemiluminescent label comprising contacting a chemiluminescent label with an acid in the presence of a degradable cationic surfactant and hydrogen peroxide followed by the addition of a base. Related kits containing such degradable cationic surfactant are also provided. The degradable cationic surfactant can compress light emission time of the chemiluminescent label to an extent that is comparable to or shorter than conventional surfactants. The degradable cationic surfactant can also increase chemiluminescence of the chemiluminescent label, providing increased light emission output that is comparable to conventional surfactants.Type: ApplicationFiled: September 7, 2018Publication date: August 1, 2019Applicant: Siemens Healthcare Diagnostics Inc.Inventors: Anand Natrajan, David Wen
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Patent number: 10141915Abstract: A clock driver control scheme for a resonant clock distribution network provides robust operation by controlling a pulse width of the output of clock driver circuits that drive the resonant clock distribution network so that changes are sequenced. The clock driver control circuit controls the clock driver circuits in the corresponding sector according to a selected operating mode via a plurality of control signals provided to corresponding clock driver circuits. The pulse widths differ for at least some of the sectors during operation of digital circuits within the integrated circuit having clock inputs coupled to the resonant clock distribution network. The different pulse widths may be a transient difference that is imposed in response to a mode or frequency change of the global clock that provides an input to the clock driver circuits.Type: GrantFiled: April 5, 2017Date of Patent: November 27, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thomas J. Bucelot, Phillip J. Restle, David Wen-Hao Shan
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Patent number: 10073039Abstract: The present invention relates to methods of enhancing chemiluminescence from a chemiluminescent label comprising contacting a chemiluminescent label with an acid in the presence of a degradable cationic surfactant and hydrogen peroxide followed by the addition of a base. Related kits containing such degradable cationic surfactant are also provided. The degradable cationic surfactant can compress light emission time of the chemiluminescent label to an extent that is comparable to or shorter than conventional surfactants. The degradable cationic surfactant can also increase chemiluminescence of the chemiluminescent label, providing increased light emission output that is comparable to conventional surfactants.Type: GrantFiled: May 13, 2014Date of Patent: September 11, 2018Assignee: SIEMENS HEALTHCARE DIAGNOSTICS, INC.Inventors: Anand Natrajan, David Wen
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Publication number: 20170320830Abstract: Hydrophilic, high quantum yield, chemiluminescent acridinium compounds with increased light output, improved stability, fast light emission and decreased non specific binding are disclosed. The chemiluminescent acridinium esters possess hydrophilic, branched, electron-donating functional groups at the C2 and/or C7 positions of the acridinium nucleus.Type: ApplicationFiled: July 4, 2014Publication date: November 9, 2017Inventors: Anand Natrajan, David Sharpe, Qingping Jiang, David Wen
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Publication number: 20170207772Abstract: A clock driver control scheme for a resonant clock distribution network provides robust operation by controlling a pulse width of the output of clock driver circuits that drive the resonant clock distribution network so that changes are sequenced. The clock driver control circuit controls the clock driver circuits in the corresponding sector according to a selected operating mode via a plurality of control signals provided to corresponding clock driver circuits. The pulse widths differ for at least some of the sectors during operation of digital circuits within the integrated circuit having clock inputs coupled to the resonant clock distribution network. The different pulse widths may be a transient difference that is imposed in response to a mode or frequency change of the global clock that provides an input to the clock driver circuits.Type: ApplicationFiled: April 5, 2017Publication date: July 20, 2017Inventors: Thomas J. Bucelot, Phillip J. Restle, David Wen-Hao Shan
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Patent number: 9705479Abstract: A clock driver control scheme for a resonant clock distribution network provides robust operation by controlling a pulse width of the output of clock driver circuits that drive the resonant clock distribution network so that changes are sequenced. The clock driver control circuit controls the clock driver circuits in the corresponding sector according to a selected operating mode via a plurality of control signals provided to corresponding clock driver circuits. The pulse widths differ for at least some of the sectors during operation of digital circuits within the integrated circuit having clock inputs coupled to the resonant clock distribution network. The different pulse widths may be a transient difference that is imposed in response to a mode or frequency change of the global clock that provides an input to the clock driver circuits.Type: GrantFiled: August 18, 2015Date of Patent: July 11, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thomas J. Bucelot, Phillip J. Restle, David Wen-Hao Shan
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Patent number: 9634654Abstract: A clock driver control scheme for a resonant clock distribution network provides robust operation by controlling a pulse width of the output of clock driver circuits that drive the resonant clock distribution network so that changes are sequenced. The clock driver control circuit controls the clock driver circuits in the corresponding sector according to a selected operating mode via a plurality of control signals provided to corresponding clock driver circuits. The pulse widths differ for at least some of the sectors during operation of digital circuits within the integrated circuit having clock inputs coupled to the resonant clock distribution network. The different pulse widths may be a transient difference that is imposed in response to a mode or frequency change of the global clock that provides an input to the clock driver circuits.Type: GrantFiled: August 7, 2015Date of Patent: April 25, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thomas J. Bucelot, Phillip J. Restle, David Wen-Hao Shan
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Patent number: 9618966Abstract: A pulse-drive resonant clock with on-the fly mode changing provides robust operation in a resonant clock distribution network, in particular for processor circuits having a dynamically-varied operating frequency. The clock drivers for the resonant clock distribution network include a pulse width control circuit having selectable operating modes corresponding to multiple clocking modes of the resonant clock distribution network. The pulse width control circuit includes a delay line that has a selectable delay length to provide pulse enable signals that control the pulse widths of the clock drivers in a sector of the resonant clock distribution network. The delay line responds to a mode control signal so that at least one pulse width of the output is changed from a first pulse width to a second pulse width without generating half-cycles with a pulse width narrower than the first or second pulse width.Type: GrantFiled: August 18, 2015Date of Patent: April 11, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thomas J. Bucelot, Robert L. Franch, Phillip J. Restle, David Wen-Hao Shan, Christos Vezyrtzis
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Patent number: 9612614Abstract: A pulse-drive resonant clock with on-the fly mode changing provides robust operation in a resonant clock distribution network, in particular for processor circuits having a dynamically-varied operating frequency. The clock drivers for the resonant clock distribution network include a pulse width control circuit having selectable operating modes corresponding to multiple clocking modes of the resonant clock distribution network. The pulse width control circuit includes a delay line that has a selectable delay length to provide pulse enable signals that control the pulse widths of the clock drivers in a sector of the resonant clock distribution network. The delay line responds to a mode control signal so that at least one pulse width of the output is changed from a first pulse width to a second pulse width without generating half-cycles with a pulse width narrower than the first or second pulse width.Type: GrantFiled: July 31, 2015Date of Patent: April 4, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Thomas J. Bucelot, Robert L. Franch, Phillip J. Restle, David Wen-Hao Shan, Christos Vezyrtzis
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Patent number: 9575119Abstract: A delay measurement technique using a tapped delay line edge capture circuit that captures tap position of edges within the delay line provides accuracy of measurement to one pico-second and below. A control circuit causes latches to capture an edge of a signal delayed through the delay line at taps of the delay line. The frequency of a clock from which the signal is derived is adjusted and tap outputs are captured by latches and averaged. A first frequency is found at which the average edge position is midway between two adjacent tap positions. A second signal, which may be the reference signal that clocks the latches, is propagated through the delay line and a second frequency is found for which the average edge position lies at the boundary between the two tap positions. The delay is determined from the difference between the periods of the first frequency and the second frequency.Type: GrantFiled: February 10, 2016Date of Patent: February 21, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Robert L. Franch, Phillip J. Restle, David Wen-Hao Shan