Patents by Inventor Zhu Mao
Zhu Mao 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: 20240117376Abstract: A scalable method for producing DNA/polycation particles having an optimal, defined particle size with multiple virus assembly plasmids for efficient transfection of viral production cells in suspension cultures. The presently disclosed DNA/polycation particles yield superior and reproducible transfection activity and shelf stability in the suspension form and can be used as an off-the-shelf product. The presently disclosed DNA/polycation particle formulation can potentially simplify and streamline the viral manufacturing process and improve production quality and consistency.Type: ApplicationFiled: February 16, 2022Publication date: April 11, 2024Inventors: Hai-Quan Mao, Yining Zhu, Yizong Hu
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Publication number: 20240115513Abstract: Methods for preparing nucleic acid/lipid particles of an optimum particle size for efficient transfection of cells in vitro and in vivo local transfection are provided. The method is based on kinetic control of the nucleic acid/lipid nanoparticle assembly to prepare shelf-stable particles with defined sizes between about 50 nm and 1200 nm. The size-dependent characteristics of the nucleic acid/lipid particle-mediated transfection for the size range between 50 nm and 1200 nm also is provided.Type: ApplicationFiled: February 16, 2022Publication date: April 11, 2024Inventors: Hai-Quan Mao, Yining Zhu, Yizong Hu
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Publication number: 20240084324Abstract: Disclosed are the optimal composition and size of DNA/polycation particles for efficient transfection of viral production cells in both adherent and suspension cultures. The size-dependent feature of DNA/polycation particle-mediated transfection for particles between 50 nm and 1000 nm also is disclosed. A new scalable method based on kinetic control of DNA/polycation nanoparticle assembly to prepare shelf-stable particles with defined sizes between 50 nm and 1000 nm also is disclosed. The presently disclosed DNA/polycation particles yield superior and reproducible transfection activity and shelf stability and can be used as an off-the-shelf product.Type: ApplicationFiled: February 16, 2022Publication date: March 14, 2024Inventors: Hai-Quan Mao, Yizong Hu, Yining Zhu
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Publication number: 20230316236Abstract: The disclosure relates to a life prediction system for a fan of a lamp. The system comprises a fan signal detecting module to detect at least one working parameter of the fan; and a micro control unit to receive the working current signal, the environment temperature signal and the working rotation speed signal of the fan. The detecting module comprises a current detecting unit to detect a working current of the fan and output a working current signal; a temperature detecting unit to detect a working environment temperature of the fan and output an environment temperature signal; and a rotation speed detecting unit to detect and output a working rotation speed signal of the fan. The micro control unit calculates a predicted residual life of the fan based on the received working current signal, the environment temperature signal, the working rotation speed signal, through the life model of the fan.Type: ApplicationFiled: June 7, 2023Publication date: October 5, 2023Inventors: Min FANG, Qi Long, Yong Li, Zhu Mao, Shuyi Qin
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Patent number: 11704630Abstract: The disclosure relates to a life prediction system for a fan of a lamp. The system comprises a fan signal detecting module to detect at least one working parameter of the fan; and a micro control unit to receive the working current signal, the environment temperature signal and the working rotation speed signal of the fan. The detecting module comprises a current detecting unit to detect a working current of the fan and output a working current signal; a temperature detecting unit to detect a working environment temperature of the fan and output an environment temperature signal; and a rotation speed detecting unit to detect and output a working rotation speed signal of the fan. The micro control unit calculates a predicted residual life of the fan based on the received working current signal, the environment temperature signal, the working rotation speed signal, through the life model of the fan.Type: GrantFiled: December 10, 2018Date of Patent: July 18, 2023Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Min Fang, Zhu Mao, Yong Li, Qi Long, Shuyi Qin
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Publication number: 20230029021Abstract: The present invention relates to a lighting apparatus driver, comprising: a filter, which is used to filter out noise; a rectifier, which is used to convert an alternating current voltage into a direct current voltage; and a plurality of voltage regulator integrated circuit (IC) modules, which are directly or indirectly connected to the rectifier, wherein each one of the plurality of voltage regulator IC modules is used to connect to a separate lighting apparatus, so that each one of the plurality of voltage regulator IC modules can independently control the electric current inputted into the lighting apparatus connected thereto.Type: ApplicationFiled: January 9, 2020Publication date: January 26, 2023Inventors: Zhu Mao, Shuyi Qin, Min Fang
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Patent number: 11528791Abstract: A driving circuit is provided in this present disclosure, the driving circuit includes a voltage input module, a quick start module and a control module. The voltage input module includes a first input terminal and a second input terminal and is configured to receive an alternating current voltage and convert the alternating current voltage into a direct current voltage. The quick start module is coupled to the voltage input module and configured to receive the direct current voltage and convert the direct current voltage into a startup voltage. The control module is coupled to the quick start module and configured to receive the startup voltage and control a load, wherein the quick start module comprises a first resistor and a second resistor connected in series and is coupled between the first input terminal and the control module.Type: GrantFiled: September 19, 2019Date of Patent: December 13, 2022Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Zhu Mao, Min Fang, Zhangji Zhou, Shuyi Qin, Bo Zhang, Fanbin Wang
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Patent number: 11317496Abstract: Provided is an LED lamp circuit, comprising an LED luminous component circuit, a rectifier circuit, and an output control circuit coupled between the LED luminous component circuit and the rectifier circuit. The LED luminous component circuit comprises at least one light-emitting diode. The rectifier circuit is configured to output a rectified voltage to the LED luminous component circuit. The output control circuit comprises a voltage regulator circuit and a control switch circuit. The voltage regulator circuit comprises a thermosensitive device and a voltage divider connected in series. The thermosensitive device can regulate the control voltage at both ends of the control switch circuit. To protect the LED lamp, the control switch circuit disconnects when the control voltage is less than the threshold voltage of the control switch circuit.Type: GrantFiled: May 21, 2018Date of Patent: April 26, 2022Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Zhu Mao, Qi Long, Min Fang, Shuyi Qin, Bo Zhang, Fanbin Wang
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Patent number: 11199947Abstract: Techniques for performing system management may include: defining groups, wherein each group includes one or more systems managed using a management application; selecting a scoping level, wherein the scoping level selected is one of multiple scoping levels including an all systems level, a group level, and an individual system level, wherein selecting the group level includes selecting a particular one of the multiple groups, and wherein selecting the individual system level includes selecting a particular one of the systems managed using the management application; and performing one or more operations in accordance with the scoping level. Information may be displayed in accordance with the selected scoping level. The multiple scoping levels may include multiple levels of groups. The scoping level may be selected using a menu of a graphical user interface of the management application. The systems may be data storage systems, such as data storage arrays.Type: GrantFiled: January 13, 2020Date of Patent: December 14, 2021Assignee: EMC IP Holding Company LLCInventors: Zhe Yang, Jeremy Swift, Zhu Mao, Venoy Qiang Ma, Cora Yao Chen
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Publication number: 20210385923Abstract: A driving circuit is provided in this present disclosure, the driving circuit includes a voltage input module, a quick start module and a control module. The voltage input module includes a first input terminal and a second input terminal and is configured to receive an alternating current voltage and convert the alternating current voltage into a direct current voltage. The quick start module is coupled to the voltage input module and configured to receive the direct current voltage and convert the direct current voltage into a startup voltage. The control module is coupled to the quick start module and configured to receive the startup voltage and control a load, wherein the quick start module comprises a first resistor and a second resistor connected in series and is coupled between the first input terminal and the control module.Type: ApplicationFiled: September 19, 2019Publication date: December 9, 2021Inventors: Zhu Mao, Min Fang, Zhangji Zhou, Shuyi Qin, Bo Zhang, Fanbin Wang
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Publication number: 20210216174Abstract: Techniques for performing system management may include: defining groups, wherein each group includes one or more systems managed using a management application; selecting a scoping level, wherein the scoping level selected is one of multiple scoping levels including an all systems level, a group level, and an individual system level, wherein selecting the group level includes selecting a particular one of the multiple groups, and wherein selecting the individual system level includes selecting a particular one of the systems managed using the management application; and performing one or more operations in accordance with the scoping level. Information may be displayed in accordance with the selected scoping level. The multiple scoping levels may include multiple levels of groups. The scoping level may be selected using a menu of a graphical user interface of the management application. The systems may be data storage systems, such as data storage arrays.Type: ApplicationFiled: January 13, 2020Publication date: July 15, 2021Applicant: EMC IP Holding Company LLCInventors: Zhe Yang, Jeremy Swift, Zhu Mao, Venoy Qiang Ma, Cora Yao Chen
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Patent number: 10973101Abstract: A single-stage driver for an LED device, configured to be coupled between a power supply and the LED device, comprises: a rectifier, a DC-to-DC converter, a resistor and a controller. The rectifier is configured to be coupled to the power supply and convert an alternating voltage from the power supply into a first direct voltage. The DC-to-DC converter, which comprises at least two switches, is coupled between the rectifier and the LED device and configured to receive the first direct voltage and provide a constant current to the LED device. The resistor is configured to be coupled in series with the LED device. The controller is coupled between the resistor and the at least two switches, and configured to keep the current through the LED device stable around a predetermined current value by controlling the switches based on a voltage across the resistor, wherein all the at least two switches are turned on or off synchronously.Type: GrantFiled: August 7, 2019Date of Patent: April 6, 2021Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Zhu Mao, Min Fang, Zhangji Zhou, Shuyi Qin, Fanbin Wang
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Patent number: 10959309Abstract: An LED lamp protection circuit comprising: a driving circuit, a rectifier circuit coupled with the driving circuit, an LED luminous component circuit coupled with the rectifier circuit, and an arcing protection circuit coupled between the rectifier circuit and the LED luminous component circuit. The arcing protection circuit and the LED luminous component circuit are connected in parallel. When the LED lamp works under a normal condition, the arcing protection circuit is in blocking state. When at least one circuit between the rectifier circuit and the LED luminous component circuit opens, the arcing protection circuit is turned on, the driving circuit and the arcing protection circuit form a loop circuit to extinguish arc.Type: GrantFiled: November 13, 2018Date of Patent: March 23, 2021Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Tingting Wang, Fanbin Wang, Bo Zhang, Zhu Mao, Shuyi Qin, Qi Long
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Publication number: 20200137854Abstract: Provided is an LED lamp circuit, comprising an LED luminous component circuit, a rectifier circuit, and an output control circuit coupled between the LED luminous component circuit and the rectifier circuit. The LED luminous component circuit comprises at least one light-emitting diode. The rectifier circuit is configured to output a rectified voltage to the LED luminous component circuit. The output control circuit comprises a voltage regulator circuit and a control switch circuit. The voltage regulator circuit comprises a thermosensitive device and a voltage divider connected in series. The thermosensitive device can regulate the control voltage at both ends of the control switch circuit. To protect the LED lamp, the control switch circuit disconnects when the control voltage is less than the threshold voltage of the control switch circuit.Type: ApplicationFiled: May 21, 2018Publication date: April 30, 2020Inventors: Zhu Mao, Qi Long, Min Fang, Shuyi Qin, Bo Zhang, Fanbin Wang
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Patent number: 10591152Abstract: The present invention relates to a light emitting diode (LED) lamp, which includes: a base configured to electrically connect with an external power supply; at least one first printed circuit board (PCB), with at least one LED mounted thereon; a driver module, electrically connected to the base and the first PCB, and configured to drive an LED; a heat dissipation module, thermally contacted with the first PCB, and configured to dissipate heat generated from the LED; a connecting device, connected to the heat dissipation module; and a replaceable active cooling module, detachably connected to the connecting device, and configured to generate a cooling fluid for cooling at least one of the PCB and the heat dissipation module.Type: GrantFiled: June 25, 2018Date of Patent: March 17, 2020Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Qi Long, Min Fang, Zhu Mao, Shuyi Qin, Yong Li
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Patent number: 10595370Abstract: The present invention discloses an LED lamp adapted to work in a circuit that contains a magnetic ballast. The LED lamp comprises a bridge rectifier, a filter capacitor, an LED light source, a transistor, and a pulse width modulation controller. The bridge rectifier is configured to convert the alternating current supplied by the magnetic ballast into a direct current. The bridge rectifier comprises a first input terminal, a second input terminal, a first output terminal, and a second output terminal, where the first and second input terminals are electrically connected to the magnetic ballast. The filter capacitor is electrically connected to the first and second output terminals of the bridge rectifier. The LED light source is electrically connected to the first and second output terminals of the bridge rectifier. The transistor comprises a drain electrode, a source electrode, and a gate electrode.Type: GrantFiled: April 20, 2018Date of Patent: March 17, 2020Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Zhu Mao, Bo Zhang, Fanbin Wang, Shuyi Qin
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Publication number: 20200053847Abstract: A single-stage driver for a LED device, configured to be coupled between a power supply and the LED device, comprises: a rectifier, a DC-to-DC converter, a resistor and a controller. The rectifier is configured to be coupled to the power supply and convert an alternating voltage from the power supply into a first direct voltage. The DC-to-DC converter, which comprises at least two switches, is coupled between the rectifier and the LED device and configured to receive the first direct voltage and provide a constant current to the LED device. The resistor is configured to be coupled in series with the LED device. The controller is coupled between the resistor and the switches, and configured to keep the current through the LED device stable around a predetermined current value by controlling the switches based on a voltage across the resistor, wherein all the switches are turned on or off synchronously.Type: ApplicationFiled: August 7, 2019Publication date: February 13, 2020Inventors: Zhu MAO, Min FANG, Zhangji ZHOU, Shuyi QIN, Fanbin WANG
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Patent number: 10440798Abstract: The present invention provides an LED lamp and a temperature control circuit applied to the LED lamp. The LED lamp includes at least one LED unit, a magnetic ballast, and an LED drive circuit. The magnetic ballast is coupled to a power and configured to limit and stabilize a received alternating current. The LED drive circuit includes a temperature control circuit. The temperature control circuit is coupled to the magnetic ballast and connected in parallel with the LED unit, is configured to detect an internal temperature of the LED lamp and adjust an output power of the LED unit, and includes a thermal sensitive module having a negative temperature coefficient thermistor and a phase cut circuit.Type: GrantFiled: April 27, 2018Date of Patent: October 8, 2019Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Zhu Mao, Zhangji Zhou, Min Fang, Fanbin Wang, Shuyi Qin
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Publication number: 20190213562Abstract: The disclosure relates to a life prediction system for a fan of a lamp. The system comprises a fan signal detecting module to detect at least one working parameter of the fan; and a micro control unit to receive the working current signal, the environment temperature signal and the working rotation speed signal of the fan. The detecting module comprises a current detecting unit to detect a working current of the fan and output a working current signal; a temperature detecting unit to detect a working environment temperature of the fan and output an environment temperature signal; and a rotation speed detecting unit to detect and output a working rotation speed signal of the fan. The micro control unit calculates a predicted residual life of the fan based on the received working current signal, the environment temperature signal, the working rotation speed signal, through the life model of the fan.Type: ApplicationFiled: December 10, 2018Publication date: July 11, 2019Inventors: Min FANG, Zhu MAO, Yong LI, Qi LONG, Shuyi QIN
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Publication number: 20190191526Abstract: An LED lamp protection circuit comprising: a driving circuit, a rectifier circuit coupled with the driving circuit, an LED luminous component circuit coupled with the rectifier circuit, and an arcing protection circuit coupled between the rectifier circuit and the LED luminous component circuit. The arcing protection circuit and the LED luminous component circuit are connected in parallel. When the LED lamp works under a normal condition, the arcing protection circuit is in blocking state. When at least one circuit between the rectifier circuit and the LED luminous component circuit opens, the arcing protection circuit is turned on, the driving circuit and the arcing protection circuit form a loop circuit to extinguish arc.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Inventors: Tingting WANG, Fanbin WANG, Bo ZHANG, Zhu MAO, Shuyi QIN, Qi LONG