Patents by Inventor Liqing Hu

Liqing Hu 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).

  • Patent number: 11999876
    Abstract: The compositions of the present disclosure polish surfaces or substrates that at least partially include ruthenium. The composition includes a synergistic combination of ammonia and oxygenated halogen compound. The composition may further include abrasive and acid(s). A polishing composition for use on ruthenium materials may include ammonia, present in an amount of 0.01 wt % to 10 wt %, based on the total weight of the composition; hydrogen periodate, present in an amount of 0.01 wt % to 10 wt %, based on the total weight of the composition; silica, present in an amount of 0.01 wt % to 12 wt %, based on the total weight of the composition; and organic sulfonic acid, present in an amount of 0.01 wt % to 10 wt %, based on the total weight of the composition, wherein the pH of the composition is between 6 and 8.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: June 4, 2024
    Assignee: FUJIFILM ELECTRONIC MATERIALS U.S.A., INC.
    Inventors: David (Tawei) Lin, Bin Hu, Liqing (Richard) Wen, Yannan Liang, Ting-Kai Huang
  • Publication number: 20240123372
    Abstract: A process for treating aged oil by electron beam irradiation is disclosed, comprising the following steps: step 1, homogenizing the aged oil and then feeding the aged oil into a distributor; step 2, forming a liquid layer having a certain thickness on the distributor; step 3, installing and debugging an electron beam irradiation device on the distributor; step 4, installing and debugging a phased-array microwave emitter on the distributor after installing and debugging the electron beam irradiation device; step 5, turning on the electron beam irradiation device and the phased-array microwave emitter; and step 6, dividing the treated aged oil and then allowing the aged oil after dividing to enter an oil pool and a water pool for standing. Oil flows out from an upper layer of the oil pool, a lower layer of the oil pool flows back to an aged oil storage pool.
    Type: Application
    Filed: April 25, 2022
    Publication date: April 18, 2024
    Inventors: YI LI, Xiaohui FAN, Liping WEI, Xudong QING, Yuan FAN, Guangchuan LIU, Dong YANG, Xiuding HU, Haitao CUI, Liqing WANG, Lingli REN
  • Patent number: 11920676
    Abstract: Disclosed are a method and device for controlling the state switching of a fluid torque converter, a vehicle and a storage medium, the method including: obtaining a target instruction when the torque converter of the vehicle is in a locked state, the target instruction triggering a change in the torque transmission direction of a transmission system of the vehicle; obtaining a state parameter, and determining whether the current vehicle is in a target operating condition according to the state parameter; and if the current vehicle is in the target operating condition, switching the fluid torque converter to an open state, and switching the torque converter back to the locked state after maintaining the open state for a preset period of time.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: March 5, 2024
    Assignees: Zhejiang Liankong Technologies Co., Ltd, Zhejiang Geely Holdings Group Co., Ltd
    Inventors: Guojie Tang, Lei Liu, Yan Sun, Wenyu Hu, Liqing Shao
  • Patent number: 7597988
    Abstract: An integrated end-bus plate for fuel cell stack includes main plate body and a conducting plate. The main plate body is made of corrosion resistant and non-conducting material, which inner side has at least a contacting surface provided for flatly in contact with one side of the fuel cell unit attached adjacent to the main plate body. The conducting plate which is made of electro-conducting material is integrally attached to an inner side of the main plate body to form an integrated body for electrically communicating with the reaction region of the fuel cell unit. The integrated end-bus plate is designed to overcome the conventional drawbacks including the fluid leaking between the end plate and the bus plate and the formation of metallic ions due to the electrochemical corrosion of the bus plate that generally results in causing damages to the fuel cell.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: October 6, 2009
    Assignee: Shen-Li High Tech Co., Ltd.
    Inventors: Liqing Hu, Zheng Li, Weiliang Guo
  • Patent number: 7534521
    Abstract: The invention discloses an integral multi-stack system of fuel cell. The system includes at least one pair of fuel cell stacks, a manifolding functional frame, and an attaching device for securely installing each pair of fuel cell stacks to the manifolding functional frame. Each fuel cell stack has a pair of end plates and six openings including a fuel inlet, an oxidant inlet, a cooling agent inlet, a fuel outlet, an oxidant outlet, and cooling agent outlet all formed on one end plate thereof. When the fuel cell stacks are securely installed onto the manifolding functional frame, each opening thereof is air commnicateable to a sub-passage defined in the body without being communicated with one another and respectively communicated to a plurality of main passages defined in the body, making the main passages and the sub-passages be able to be used to supply and/or discharge gas or liquid being used by all the fuel cell stacks integrated.
    Type: Grant
    Filed: January 31, 2004
    Date of Patent: May 19, 2009
    Assignee: Shen-Li High Tech Co., Ltd (Shanghai)
    Inventors: Liqing Hu, Jianwei Xia
  • Patent number: 7378171
    Abstract: A fuel cell includes a membrane electrode assembly, a fuel storage reservoir, an air supply unit, a temperature regulator, and a particulates blocking device. The particulates blocking device includes an multi-layer air filtering unit communicated with the air supply unit for blocking unwanted particulates from the air supplied by the air supply unit. The air filtering unit includes a particle filter layer having a plurality of porous gratings formed thereon for allowing molecules which are smaller than a size of the gratings to pass therethrough, and a molecular filler layer having a plurality of filler grains chemically bound together for absorbing a predetermined kinds of molecules so as to block the molecules from entering into the membrane electrode assembly.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: May 27, 2008
    Assignee: Shen-Li High Tech Co., Ltd
    Inventor: Liqing Hu
  • Patent number: 7233883
    Abstract: A monitoring system includes a plurality of monitoring devices adjacently provided to a group of integrated fuel cell stacks for measuring a voltage of the fuel cell units. Each of the monitoring devices includes a plurality of monitoring sensors adapted for electrically connecting to a predetermined set of fuel cell units and a MCU (Micro-Chip-Unit) for sequentially and circularly switching each two neighboring monitoring sensors for reading the voltage of each respective fuel cell. A CAN bus is provided for electrically and collectively interconnecting the monitoring devices with a central operator which is arranged in such a manner that when said the voltage of the respective fuel cell unit exceeds a safety range, the central operator generates an alert signal for indicating an abnormal operation of the respective fuel cell.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: June 19, 2007
    Assignee: Shen-Li High Tech Co., Ltd. (Shanghai)
    Inventors: Mingzhu Fu, Liqing Hu
  • Publication number: 20060284591
    Abstract: A monitoring system includes a plurality of monitoring devices adjacently provided to a group of integrated fuel cell stacks for measuring a voltage of the fuel cell units. Each of the monitoring devices includes a plurality of monitoring sensors adapted for electrically connecting to a predetermined set of fuel cell units and a MCU (Micro-Chip-Unit) for sequentially and circularly switching each two neighboring monitoring sensors for reading the voltage of each respective fuel cell. A CAN bus is provided for electrically and collectively interconnecting the monitoring devices with a central operator which is arranged in such a manner that when said the voltage of the respective fuel cell unit exceeds a safety range, the central operator generates an alert signal for indicating an abnormal operation of the respective fuel cell.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 21, 2006
    Inventors: Mingzhu Fu, Liqing Hu
  • Publication number: 20060199049
    Abstract: A monitoring system includes a plurality of monitoring sensors for electrically connecting to fuel cell units of a fuel cell stack respectively, wherein a voltage of each of the fuel cell units is measured when two corresponding neighboring monitoring sensors are switched on. An alert controller includes a switch control sequentially switching each two neighboring monitoring sensors, and an alert device arranged when the voltage of the respective fuel cell unit is within a safety range, the switch control continuously switches on another two neighboring monitoring sensors until the voltage of the last fuel cell unit is read, and when the voltage of the respective fuel cell unit is out of the safety range, the alert device generates an alert signal for indicating an abnormal operation of the respective fuel cell unit of the fuel cell stack.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 7, 2006
    Inventors: Liqing Hu, Mingzhu Fu
  • Publication number: 20060141319
    Abstract: An integrated end-bus plate for fuel cell stack includes main plate body and a conducting plate. The main plate body is made of corrosion resistant and non-conducting material, which inner side has at least a contacting surface provided for flatly in contact with one side of the fuel cell unit attached adjacent to the main plate body. The conducting plate which is made of electro-conducting material is integrally attached to an inner side of the main plate body to form an integrated body for electrically communicating with the reaction region of the fuel cell unit. The integrated end-bus plate is designed to overcome the conventional drawbacks including the fluid leaking between the end plate and the bus plate and the formation of metallic ions due to the electrochemical corrosion of the bus plate that generally results in causing damages to the fuel cell.
    Type: Application
    Filed: December 29, 2004
    Publication date: June 29, 2006
    Applicant: Shen-Li High Tech Co., Ltd.
    Inventors: Liqing Hu, Zheng Li, Weiliang Guo
  • Publication number: 20060134475
    Abstract: An air humidifying system includes an air humidifying device including a humidifying unit, having a dry air inlet and a humidified air outlet, for humidifying a flow of dry air from the dry air inlet to a humidified air exiting at the humidified air outlet. An air filtering unit has an air filtering inlet for guiding an ambient air as the dry air and an air filtering outlet communicating with the dry air inlet of the humidifying unit for purifying the dry air before entering into the humidifying unit. An air supplying unit has an air inlet port communicating with the humidified air outlet of the humidifying unit and an air outlet port adapted for communicating with an air inlet of the fuel cell stack, wherein the air supplying unit is adapted for guiding the humidified air into the fuel cell stack in a pressurized manner.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 22, 2006
    Inventors: Liqing Hu, Jianwei Xia, Bo Zhang
  • Publication number: 20060088754
    Abstract: The present discloses a fuel cell system comprising a plurality of individual fuel cells combined together to form an elongated fuel cell stack, wherein each of the individual fuel cells is divided into at least two separable isoelectric zones by insulated means, so that after the individual fuel cells are connected in series, the fuel cell stack is divided into at least two separable isoelectric parts, by connecting the separable isoelectric parts of the fuel cell stack in series, the fuel cell stack is capable of outputting a multiple increased voltage and a multiple decreased current.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 27, 2006
    Inventors: Liqing Hu, Xin Wu
  • Publication number: 20060051645
    Abstract: A fuel cell stack includes a plurality of anode bus plates and a plurality of cathode bus plates disposed between two end plates of a fuel cell stack in such a manner that at least two cell units as a cell set are grouped between the anode bus plate and the cathode bus plate, wherein each of the anode bus plates is positioned at an anode end of the respective cell set and each of the cathode bus plates is positioned at a cathode end of the respective cell set, wherein when the anode and cathode bus plates are electrically connected in a parallel manner, the anode and cathode bus plates accumulatively collect an electrical energy of the cell set therebetween so as to substantially enhance an output current of the fuel cell stack with minimized output voltage.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 9, 2006
    Inventors: Liqing Hu, Yong Zhou
  • Publication number: 20050170235
    Abstract: The invention discloses an integral multi-stack system of fuel cell. The system includes at least one pair of fuel cell stacks, a manifolding functional frame, and an attaching device for securely installing each pair of fuel cell stacks to the manifolding functional frame. Each fuel cell stack has a pair of end plates and six openings including a fuel inlet, an oxidant inlet, a cooling agent inlet, a fuel outlet, an oxidant outlet, and cooling agent outlet all formed on one end plate thereof. When the fuel cell stacks are securely installed onto the manifolding functional frame, each opening thereof is air commnicateable to a sub-passage defined in the body without being communicated with one another and respectively communicated to a plurality of main passages defined in the body, making the main passages and the sub-passages be able to be used to supply and/or discharge gas or liquid being used by all the fuel cell stacks integrated.
    Type: Application
    Filed: January 31, 2004
    Publication date: August 4, 2005
    Inventors: Liqing Hu, Jianwei Xia
  • Publication number: 20050031932
    Abstract: A fuel cell includes a membrane electrode assembly, a fuel storage reservoir, an air supply unit, a temperature regulator, and a particulates blocking device. The particulates blocking device includes an multi-layer air filtering unit communicated with the air supply unit for blocking unwanted particulates from the air supplied by the air supply unit. The air filtering unit includes a particle filter layer having a plurality of porous gratings formed thereon for allowing molecules which are smaller than a size of the gratings to pass therethrough, and a molecular filler layer having a plurality of filler grains chemically bound together for absorbing a predetermined kinds of molecules so as to block the molecules from entering into the membrane electrode assembly.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 10, 2005
    Inventor: Liqing Hu
  • Publication number: 20050008925
    Abstract: The present invention disclosed a fuel cell comprises a plurality of cell bodies electrically connected in a series manner, each of the cell bodies having an anode catalytic interface and an opposed a cathode catalytic interface, a proton exchange membrane, sandwiched between each the two adjacent cell bodies to communicate with the anode catalytic interface and the cathode catalytic interface thereof to form a fuel cell stack, and a reacting passage arrangement for generating an electrochemical reaction between the anode catalytic interfaces and the cathode catalytic interfaces of the cell bodies, wherein the reacting passage arrangement has a flowing channel having an inlet and an outlet for allowing a reactant to pass through the fuel cell stack from the inlet to the outlet so as to electrochemically react with the proton exchange membrane, wherein the flowing channel is shaped and sized to balance an entrance pressure of the reactant at the inlet with an exit pressure of the reactant at the outlet so as t
    Type: Application
    Filed: July 9, 2004
    Publication date: January 13, 2005
    Inventor: Liqing Hu