Patents by Inventor Chun Zhan
Chun Zhan 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: 11971565Abstract: An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film, wherein in the ultraviolet band, the difference of between the wavelength with the transmittance at 80% of the absorbing film and the wavelength with the reflectivity at 80% of the first multilayer film falls in the range between 25 nm and 37 nm, the difference of between the wavelength with the transmittance at 50% of the absorbing film and the wavelength with the reflectivity at 50% of the first multilayer film falls in the range between 6 nm and 14 nm, and the difference of between the wavelength with the transmittance at 20% of the absorbing film and the wavelength with the reflectivity at 20% of the first multilayer film falls in the range between ?6 nm and 2.5 nm.Type: GrantFiled: May 26, 2022Date of Patent: April 30, 2024Assignees: PTOT (SUZHOU) INC., PLATINUM OPTICS TECHNOLOGY INC.Inventors: Chung-Han Lu, Hsiao-Ching Shen, Chun-Cheng Hsieh, Ming-Zhan Wang
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Patent number: 11664526Abstract: Cathode materials for lithium ion batteries, lithium ion batteries incorporating the cathode materials, and methods of operating the lithium ion batteries are provided. The materials, which are composed of lithium iron oxides, are able to undergo reversible anionic and cationic redox reactions with no O2(g) generation.Type: GrantFiled: December 6, 2018Date of Patent: May 30, 2023Assignees: Northwestern University, UChicago Argonne, LLCInventors: Christopher M. Wolverton, Zhenpeng Yao, Chun Zhan, Jun Lu, Khalil Amine
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Publication number: 20230017040Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.Type: ApplicationFiled: May 25, 2022Publication date: January 19, 2023Inventors: Nivedan Tiwari, Krishnakumar Venkateswaran, Andrew William Jones, Chun Zhan, Lorenzo Salvatori
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Patent number: 11344404Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.Type: GrantFiled: December 26, 2018Date of Patent: May 31, 2022Assignee: Bausch & Lomb IncorporatedInventors: Nivedan Tiwari, Krishnakumar Venkateswaran, Andrew William Jones, Chun Zhan, Lorenzo Salvatori
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Publication number: 20210194042Abstract: Cathode materials for lithium ion batteries, lithium ion batteries incorporating the cathode materials, and methods of operating the lithium ionbatteries are provided. The materials, which are composed of lithium iron oxides, are able to undergo reversible anionic and cationic redox reactions with no O2(g) generation.Type: ApplicationFiled: December 6, 2018Publication date: June 24, 2021Inventors: Christopher M. Wolverton, Zhenpeng Yao, Chun Zhan, Jun Lu, Khalil Amine
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Patent number: 10763661Abstract: A reverse current protection circuit for a switch circuit includes a reverse current control circuit and an enable/disable circuit coupled to the reverse current control circuit. The reverse current control circuit is coupled to an input terminal and an output terminal of the switch circuit, and disconnects the output terminal of the switch circuit from the input terminal of the switch circuit when an output voltage of the switch circuit is higher than a first predetermined voltage. The enable/disable circuit disables the reverse current control circuit for a first predetermined time period when the output voltage of the switch circuit becomes lower than the first predetermined voltage after being higher than the first predetermined voltage, and enables the reverse current control circuit after the first predetermined time period.Type: GrantFiled: September 14, 2017Date of Patent: September 1, 2020Assignee: NXP B.V.Inventors: Mingliang Wan, Fu Chun Zhan, Yuanwei Yang
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Patent number: 10439510Abstract: In an example embodiment, an apparatus includes a bridge rectifier circuit having branches between the AC and DC nodes formed by a set of transistors. A load current measurement circuit includes a current-controlled current source coupled to the bridge rectifier circuit. The current control current source is configured to generate a mirrored current that is a scaled version of a current through at least one of the set of transistors. A current integration circuit is configured to integrate the mirrored current by charging a capacitor with the scaled current in a first mode and discharging the capacitor in a second mode. A sample and hold circuit is configured to set an output node to a voltage equal to a voltage stored by the capacitor in response to the current integration circuit entering the second mode and prior to the discharge of the capacitor.Type: GrantFiled: March 14, 2017Date of Patent: October 8, 2019Assignee: NXP B.V.Inventors: Peter Christiaans, Robert Glenn Crosby, II, Fu Chun Zhan
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Publication number: 20190254810Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.Type: ApplicationFiled: December 26, 2018Publication date: August 22, 2019Inventors: Nivedan Tiwari, Krishnakumar Venkateswaran, Andrew William Jones, Chun Zhan, Lorenzo Salvatori
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Publication number: 20180102636Abstract: A reverse current protection circuit for a switch circuit includes a reverse current control circuit and an enable/disable circuit coupled to the reverse current control circuit. The reverse current control circuit is coupled to an input terminal and an output terminal of the switch circuit, and disconnects the output terminal of the switch circuit from the input terminal of the switch circuit when an output voltage of the switch circuit is higher than a first predetermined voltage. The enable/disable circuit disables the reverse current control circuit for a first predetermined time period when the output voltage of the switch circuit becomes lower than the first predetermined voltage after being higher than the first predetermined voltage, and enables the reverse current control circuit after the first predetermined time period.Type: ApplicationFiled: September 14, 2017Publication date: April 12, 2018Inventors: MINGLIANG WAN, FU CHUN Zhan, YUANWEI YANG
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Publication number: 20170264211Abstract: In an example embodiment, an apparatus includes a bridge rectifier circuit having branches between the AC and DC nodes formed by a set of transistors. A load current measurement circuit includes a current-controlled current source coupled to the bridge rectifier circuit. The current control current source is configured to generate a mirrored current that is a scaled version of a current through at least one of the set of transistors. A current integration circuit is configured to integrate the mirrored current by charging a capacitor with the scaled current in a first mode and discharging the capacitor in a second mode. A sample and hold circuit is configured to set an output node to a voltage equal to a voltage stored by the capacitor in response to the current integration circuit entering the second mode and prior to the discharge of the capacitor.Type: ApplicationFiled: March 14, 2017Publication date: September 14, 2017Inventors: PETER CHRISTIAANS, ROBERT GLENN CROSBY, II, FU CHUN ZHAN
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Patent number: 9719766Abstract: A measurement system for determining dimensions of a measurement zone of a physical asset is presented. The system includes a telescoping gauge configured to determine one or more analog measurements corresponding to the measurement zone of the physical asset, where the telescoping gauge includes a sliding arm and a vertical arm. Furthermore, the system includes a data digitizer operatively coupled to the telescoping gauge and configured to convert the one or more analog measurements to corresponding one or more digital measurements. In addition, the system includes a wireless unit operatively coupled to the telescoping gauge and configured to wirelessly transmit the one or more digital measurements.Type: GrantFiled: February 18, 2015Date of Patent: August 1, 2017Assignee: GENERAL ELECTRIC COMPANYInventors: Juntao Wu, Robert William Tait, Chun Zhan, Maxine Marie Gibeau, John Brandon Laflen
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Patent number: 9599806Abstract: Methods and systems for autofocusing of an imaging system are presented. Provided is an imaging system and an optical interferometry system for generating one or more images corresponding to a target region in a subject. The method provides calibration information that identifies a focal position of the optical interferometry system corresponding to a determined focal position of the imaging system. A subsequent focal position of the imaging system is determined for generating a desired image corresponding to at least one of another target region in the subject and another position of the target region relative to the imaging system based on the calibration information.Type: GrantFiled: June 9, 2015Date of Patent: March 21, 2017Assignee: General Electric CompanyInventors: Zhangyi Zhong, Chun Zhan, Kang Zhang, Daniel Curtis Gray
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Publication number: 20160363755Abstract: Methods and systems for autofocusing of an imaging system are presented. Provided is an imaging system and an optical interferometry system for generating one or more images corresponding to a target region in a subject. The method provides calibration information that identifies a focal position of the optical interferometry system corresponding to a determined focal position of the imaging system. A subsequent focal position of the imaging system is determined for generating a desired image corresponding to at least one of another target region in the subject and another position of the target region relative to the imaging system based on the calibration information.Type: ApplicationFiled: June 9, 2015Publication date: December 15, 2016Inventors: Zhangyi Zhong, Chun Zhan, Kang Zhang, Daniel Curtis Gray
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Publication number: 20160238364Abstract: A measurement system for determining dimensions of a measurement zone of a physical asset is presented. The system includes a telescoping gauge configured to determine one or more analog measurements corresponding to the measurement zone of the physical asset, where the telescoping gauge includes a sliding arm and a vertical arm. Furthermore, the system includes a data digitizer operatively coupled to the telescoping gauge and configured to convert the one or more analog measurements to corresponding one or more digital measurements. In addition, the system includes a wireless unit operatively coupled to the telescoping gauge and configured to wirelessly transmit the one or more digital measurements.Type: ApplicationFiled: February 18, 2015Publication date: August 18, 2016Inventors: Juntao Wu, Robert William Tait, Chun Zhan, Maxine Marie Gibeau, John Brandon Laflen
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Publication number: 20160041375Abstract: An ultra-compact microscope configured to image at least a portion of a biological sample is provided. The ultra-compact microscope includes an illumination source configured to provide illumination beams to image at least the portion of the biological sample. The ultra-compact microscope further includes an image sensor configured to acquire emitted signals from at least the portion of the biological sample. Moreover, the ultra-compact microscope includes an objective lens operatively coupled to the image sensor and configured to direct emitted signals from the biological sample to the image sensor. Additionally, the ultra-compact microscope includes a micro-motion control assembly operatively coupled to the image sensor and configured to provide dynamic translational motion, dynamic tilting motion, or both to the image sensor at least during scanning of the biological sample.Type: ApplicationFiled: August 7, 2014Publication date: February 11, 2016Inventors: Chun Zhan, Robert John Filkins, Juntao Wu
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Patent number: 8963555Abstract: A sensor includes a sensor head including an acoustic detector configured to receive light from a first light source and to reflect the light upon incidence of acoustic waves. The sensor also includes at least one optical fiber and at least one fluorescent material within at least one of the sensor head and the at least one optical fiber. The at least one fluorescent material is configured to receive light from a second light source external to the sensor and emit visible light in response to the light received from the second light source.Type: GrantFiled: May 13, 2011Date of Patent: February 24, 2015Assignee: General Electric CompanyInventors: Juntao Wu, Glenn Alan Forman, Michael Shane Pilon, Zhihong Roy Mao, Chun Zhan, Maxine Marie Gibeau, Lubomir Hristov Sevov
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Patent number: 8919004Abstract: The present application provides for feeler gauges. The feeler gauges include a plurality of elongate measuring leaves rotatably coupled on a common axis of rotation with an elongate housing. The leaves may be manually, selectively rotatable between a “home” position wherein the leaves are substantially aligned with the housing and an “extended” position wherein the leaves are spaced from the housing. The leaves may be relatively flexible and substantially flat such that they define a substantially constant thickness. One or more extended leaves may be used to measure the thickness of a clearance or gap. The gauges may be configured to detect, determine or measure the thickness of the leaves that are in the “home” position and/or the “extended” position, and thereby determine the total thickness of a clearance or gap measured by the extended leaves.Type: GrantFiled: December 31, 2012Date of Patent: December 30, 2014Assignee: General Electric CompanyInventors: Juntao Wu, Robert William Tait, Cheryl (Chun) Zhan, John Brandon Laflen, Steven William Wik, John Herbold, S. M. Shajedul Hasan
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Publication number: 20120286795Abstract: A sensor includes a sensor head including an acoustic detector configured to receive light from a first light source and to reflect the light upon incidence of acoustic waves. The sensor also includes at least one optical fiber and at least one fluorescent material within at least one of the sensor head and the at least one optical fiber. The at least one fluorescent material is configured to receive light from a second light source external to the sensor and emit visible light in response to the light received from the second light source.Type: ApplicationFiled: May 13, 2011Publication date: November 15, 2012Inventors: Juntao Wu, Glenn Alan Forman, Michael Shane Pilon, Zhihong Roy Mao, Chun Zhan, Maxine Marie Gibeau, Lubomir Hristov Sevov
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Patent number: 8054594Abstract: An apparatus to detect arc is presented. The apparatus includes a fiber sensor to detect characteristics of an arc flash and a processor to process at least two characteristics of the arc flash. The processor is further configured to generate an arc fault signal. A protective device is configured to mitigate the arc flash based on the arc fault signal.Type: GrantFiled: June 18, 2009Date of Patent: November 8, 2011Assignee: General Electric CompanyInventors: Juntao Wu, Renato Guida, Hua Xia, Chun Zhan, John Thomas Garrity
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Patent number: D1017295Type: GrantFiled: January 7, 2022Date of Patent: March 12, 2024Assignee: Nonet Inc.Inventors: Beico Chiu, Yi-Chun Wang, Xiang-Yi Zhan