Patents by Inventor Huafeng LIU

Huafeng LIU 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: 11028102
    Abstract: A method of inhibiting leukotriene include: administrating a therapeutically effective amount of a compound of chemical formula I or II or a pharmaceutical acceptable salt thereof to a subject, R1 is OH or OAc; X is C or N; and R2 is H, alkyl, alkoxy, benzyloxy, haloalkyl, OH, CN, NO2, or halogen, provided that when X is N, R2 is nil.
    Type: Grant
    Filed: February 29, 2020
    Date of Patent: June 8, 2021
    Assignee: XI'AN TAIKOMED PHARMACEUTICAL TECHNOLOGY CO., LTD.
    Inventors: Yonghong Tang, Minghui Chang, Huafeng Qi, Chengyuan Liang, Xingke Ju, Lei Tian, Yuzhi Liu, Han Li
  • Patent number: 11010629
    Abstract: A method and an apparatus for automatically extracting image features of electrical imaging well logging, wherein the method comprises the steps of: acquiring historical data of electrical imaging well logging; pre-processing the historical data of the electrical imaging well logging to generate an electrical imaging well logging image covering a full hole; recognizing and marking a typical geological feature in the electrical imaging well logging image covering the full hole, obtaining a processed image, and determining the processed image as a training sample according to types of the geological features; constructing a deep learning model including an input layer, a plurality of hidden layers, and an output layer; training the deep learning model using the training sample; using the trained deep learning model, recognizing type of a geological feature of an electrical imaging well logging image of a well section to be recognized, and performing morphological optimization processing on the recognition resul
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: May 18, 2021
    Assignee: PetroChina Company Limited
    Inventors: Zhou Feng, Ning Li, Hongliang Wu, Kewen Wang, Peng Liu, Yusheng Li, Huafeng Wang, Chen Wang
  • Patent number: 11003952
    Abstract: A method and an apparatus for automatically recognizing an electrical imaging well logging facies, wherein the method comprises: acquiring historical data of electrical imaging well logging; pre-processing the historical data of the electrical imaging well logging to generate an electrical imaging well logging image covering a full hole; recognizing a typical imaging well logging facies in the electrical imaging well logging image covering the full hole, and determining the electrical imaging well logging image covering the full hole as a training sample in accordance with a category of the imaging well logging facies; constructing a deep learning model including an input layer, a plurality of hidden layers, and an output layer; training the deep learning model using the training sample to obtain a trained deep learning model; and recognizing the well logging facies of the electrical imaging well logging image of the well section to be recognized using the trained deep learning model.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 11, 2021
    Assignee: PetroChina Company Limited
    Inventors: Zhou Feng, Hongliang Wu, Ning Li, Kewen Wang, Peng Liu, Yusheng Li, Huafeng Wang, Binsen Xu
  • Patent number: 11005105
    Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate and an electrochemical device. The current collector includes an insulation layer; a conductive layer located on at least one surface of the insulation layer; and a first protective layer provided on a surface of the conductive layer facing away from the insulation layer. The first protective layer is made of a metal. The current collector is provided with a plurality of holes penetrating through the insulation layer, the conductive layer and the first protective layer.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: May 11, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang, Xin Liu
  • Publication number: 20210128476
    Abstract: The invention discloses a lenalidomide gastro-retentive sustained-release tablet and a preparation method thereof. The sustained-release tablet comprises 3 wt % to 14 wt % of lenalidomide, 14 wt % to 68 wt % of release enhancer with low bulk density, 23 wt % to 70 wt % of sustained-release material with low bulk density, and the balance of other pharmaceutically acceptable excipients, wherein the bulk density of the release enhancer ranges from 0.24 g/cm3 to 0.52 g/cm3; and the bulk density of the sustained-release material ranges from 0.29 g/cm3 to 0.51 g/cm3. The sustained-release tablet of the invention is in a floating state in a gastric environment, is not directly discharged from a stomach due to gastric emptying, has an effect of gastric retention, and is not easily discharged with substances contained in the stomach, and has a high drug bioavailability and small side effects.
    Type: Application
    Filed: September 29, 2018
    Publication date: May 6, 2021
    Applicant: DiQi Pharmaceuticals Co., Ltd.
    Inventors: Feng LIU, Huafeng LUO, Jingyu HE, Xiaofeng TAN, Shuting LAI
  • Patent number: 10988561
    Abstract: A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 27, 2021
    Assignees: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY, SHANDONG HUAJU POLYMER MATERIALS CO., LTD., CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.
    Inventors: Aihua He, Yunsheng Ma, Huafeng Shao, Gang Yao, Chenguang Liu, Bo Luan, Riguo Wang
  • Publication number: 20200402274
    Abstract: The invention discloses a limited-angle CT reconstruction method based on Anisotropic Total Variation. According to the method, through an image reconstruction model using low dose and sparse-view-angle CT images, a fast iterative reconstruction algorithm is combined with an Anisotropic Total Variation method. The problems that in an existing limited-angle CT reconstruction method are effectively solved, such as partial boundary ambiguity, slow convergence speed and unable to accurately solve. In the process of solving the model, the slope filter is introduced in the Filtered Back-Projection to preprocess the iterative equation, and the Alternating Projection Proximal is used to solve the iterative equation, and the iteration is repeated until the termination condition is satisfied; the experimental comparison with the existing reconstruction methods shows that the invention can achieve better reconstruction effect.
    Type: Application
    Filed: November 20, 2019
    Publication date: December 24, 2020
    Inventors: HUAFENG LIU, TING WANG
  • Patent number: 10827937
    Abstract: The present invention discloses a method for noninvasive imaging of cardiac electrophysiological based on low rank and sparse constraints. This method decomposes the spatio-temporal distribution of endocardial and epicardial potentials into a low-rank matrix representing smooth potential components and a sparse matrix representing the details of potential salience according to the prior condition of spatio-temporal correlation of the endocardial and epicardial potential distribution of the heart. By introducing low rank and sparse constraints, the solution of the ill-conditioned inverse problem of ECG is constrained to the unique optimal solution. The invention combines the individualized three-dimensional heart model of the subject to obtain a three-dimensional dynamic distribution image of the cardiac endocardial and epicardial potential of the subject, which has important practical application value.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 10, 2020
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Huafeng Liu, Lin Fang
  • Patent number: 10765382
    Abstract: The present invention discloses a method for reconstructing dynamic PET concentration distribution image of dual-tracer based on stacked autoencoder. The invention introduces deep learning into dynamic tracer PET concentration distribution image reconstruction, and the process is mainly divided into two stages of training and reconstruction. In the training phase, train multiple autoencoders using the concentration distribution images of mixed tracers taken as input, and the concentration distribution images of the two tracers taken as labels to build the stacked autoencoder. In the reconstruction phase, the concentration distribution images of the individual tracer can be reconstructed by inputting the concentration distribution images of the mixed traces to the well trained stacked autoencoder.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: September 8, 2020
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Huafeng Liu, Dongsheng Ruan
  • Patent number: 10756117
    Abstract: An array substrate includes a display region and a peripheral circuit region surrounding the display region. The array substrate further includes: a base substrate; first TFTs arranged on a first surface of the base substrate and at the display region, and each first TFT including a first gate electrode, a first active layer and a first source-drain electrode; and second TFTs arranged on the first surface and at the peripheral circuit region, and each second TFT including a second gate electrode, a second active layer and a second source-drain electrode. The first active layer of each first TFT is made of a material different from, and arranged at a same layer as, the second active layer of each second TFT, and the first source-drain electrode is arranged at a same layer as the second source-drain electrode.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 25, 2020
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chao Wang, Shengwei Zhao, Huafeng Liu, Chunxiang Nan
  • Publication number: 20200241369
    Abstract: A pixel structure and a manufacturing method thereof, an array substrate and a display device are provided. The pixel structure includes: a signal line; a common electrode line an extension direction of which is same as an extension direction of the signal line; a transistor including a semiconductor layer which includes a source region and a drain region; a first storage electrode which is insulated from the common electrode line and is connected with the drain region of the semiconductor layer; and a second storage electrode which is connected with the common electrode line and is insulated from the first storage electrode. In the pixel structure, portions, between the signal line and the common electrode line, of the first storage electrode and the second storage electrode includes overlap with each other to form a first storage capacitance.
    Type: Application
    Filed: August 7, 2017
    Publication date: July 30, 2020
    Inventors: Duolong DING, Huafeng LIU, Shengwei ZHAO, Chaochao SUN, Chao WANG, Jingping LV, Meng YANG, Lei YANG, Chongliang HU, Lin XIE, Bule SHUN, Shimin SUN
  • Publication number: 20200225376
    Abstract: A method is described for seismic imaging that will produce a seismic image with correctly focused and positioned reflectors. This is accomplished by adding physical geological information to a beam tomography process to generate an updated earth model for the seismic imaging. The method may be executed by a computer system.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 16, 2020
    Inventors: Huafeng Liu, Norman Ross Hill, Daniel Johnson, Konstantin Osypov
  • Publication number: 20200167974
    Abstract: This present invention discloses a dynamic dual-tracer PET reconstruction method based on a hybrid-loss 3D CNN, which selects a corresponding 3D convolution kernel for a 3D format of dual-tracer PET data, and performs feature extraction in a stereoscopic receptive field (down-sampling) and the reconstruction (up-sampling) process, which accurately reconstructs the three-dimensional concentration distributions of two different tracers from the dynamic sinogram. The method of the invention can better reconstruct the simultaneous-injection single-acquisition dual-tracer sinogram without any model constraints. The scanning time required for dual-tracer PET can be minimized based on the method of the present invention. Using this method, the raw sinogram data of dual tracers can be reconstructed into two volumetric individual images in a short time.
    Type: Application
    Filed: March 27, 2019
    Publication date: May 28, 2020
    Inventors: HUAFENG LIU, JINMIN XU
  • Patent number: 10634805
    Abstract: A method is described for predicting fault seal based on a digital seismic image including defining a fault coordinate system locally parallel and perpendicular to the at least one fault surface; extracting seismic amplitudes from a sub-volume surrounding and containing the at least one fault surface and mapping the seismic amplitudes in the fault coordinate system; performing trace fitting of the seismic amplitudes along directions locally perpendicular to the fault surface to separate the fault seismic signal from other seismic energy; comparing the fault seismic signal derived from trace fitting to at least one of natural analogs and synthetic models of seismic response to generate a predicted fault seal; and identify geologic features based on the predicted fault seal. The method may be executed by a computer system.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 28, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huafeng Liu, Donald Arthur Medwedeff
  • Patent number: 10564772
    Abstract: The present disclosure provides an array substrate, its driving method and manufacturing method, and a display device. The array substrate includes a transistor layer arranged on a base, and a first transparent conductive layer, a first insulation layer, a second transparent conductive layer, a second insulation layer and a third transparent conductive layer sequentially arranged on the transistor layer. The first transparent conductive layer covers the transistor layer at a display area, the second transparent conductive layer includes a pattern of touch electrodes, and the third transparent conductive layer includes a pattern of pixel electrodes. Within any pixel area of the display area, the pixel electrode is connected to a pixel electrode connection end of the transistor layer through a via-hole in the first insulation layer and the second insulation layer, and the first transparent conductive layer is provided with an opening at a position corresponding to the via-hole.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: February 18, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Chaochao Sun, Huafeng Liu, Shengwei Zhao, Kai Zhang, Lei Yang, Lulu Ye, Jingping Lv, Chao Wang, Chongliang Hu, Meng Yang, Duolong Ding, Bule Shun, Lin Xie, Yao Li, Shimin Sun
  • Publication number: 20200037974
    Abstract: The present invention discloses a DBN based separation method of a mixture of dual-tracer single-acquisition PET signals labelled with the same isotope. It predicts the two separate PET signals by establishing a complex mapping relationship between the dynamic mixed concentration distribution of the same isotope-labeled dual-tracer pairs and the two single radiotracer concentration images. Based on the compartment models and the Monte Carlo simulation, the present invention selects three sets of the same radionuclide-labeled tracer pairs as the objects and simulates the entire PET process from injection to scanning to generate enough training sets and testing sets. When inputting the testing sets into the constructed universal deep belief network trained by the training sets, the prediction results show that the two individual PET signals can been reconstructed well, which verifies the effectiveness of using the deep belief network to separate the dual-tracer PET signals labelled with the same isotope.
    Type: Application
    Filed: December 7, 2018
    Publication date: February 6, 2020
    Inventors: HUAFENG LIU, JINMIN XU
  • Publication number: 20200043954
    Abstract: An array substrate includes a display region and a peripheral circuit region surrounding the display region. The array substrate further includes: a base substrate; first TFTs arranged on a first surface of the base substrate and at the display region, and each first TFT including a first gate electrode, a first active layer and a first source-drain electrode; and second TFTs arranged on the first surface and at the peripheral circuit region, and each second TFT including a second gate electrode, a second active layer and a second source-drain electrode. The first active layer of each first TFT is made of a material different from, and arranged at a same layer as, the second active layer of each second TFT, and the first source-drain electrode is arranged at a same layer as the second source-drain electrode.
    Type: Application
    Filed: May 7, 2019
    Publication date: February 6, 2020
    Inventors: Chao Wang, Shengwei Zhao, Huafeng Liu, Chunxiang Nan
  • Publication number: 20190227185
    Abstract: A method is described for predicting fault seal from a digital pre-stack seismic image including defining a window based on the at least one fault surface; calculating, via the computer processor, a seismic amplitude vs reflection angle (AVA) pattern at each spatial location on the at least one fault surface by obtaining a median value of all amplitudes within the window centered on the spatial location for a given reflection angle, and repeating the calculating for each angle in the digital pre-stack seismic image to create a complete AVA pattern along the fault surface; evaluating the complete AVA pattern along the fault surface to generate a predicted fault seal; and identifying geologic features based on the predicted fault seal. The method may be executed by a computer system.
    Type: Application
    Filed: May 26, 2017
    Publication date: July 25, 2019
    Inventors: Huafeng LIU, Donald Arthur MEDWEDEFF
  • Publication number: 20190209035
    Abstract: The present invention discloses a method for noninvasive imaging of cardiac electrophysiological based on low rank and sparse constraints. This method decomposes the spatio-temporal distribution of endocardial and epicardial potentials into a low-rank matrix representing smooth potential components and a sparse matrix representing the details of potential salience according to the prior condition of spatio-temporal correlation of the endocardial and epicardial potential distribution of the heart. By introducing low rank and sparse constraints, the solution of the ill-conditioned inverse problem of ECG is constrained to the unique optimal solution. The invention combines the individualized three-dimensional heart model of the subject to obtain a three-dimensional dynamic distribution image of the cardiac endocardial and epicardial potential of the subject, which has important practical application value.
    Type: Application
    Filed: May 18, 2018
    Publication date: July 11, 2019
    Inventors: HUAFENG LIU, LIN FANG
  • Patent number: 10325943
    Abstract: The present application discloses a method of fabricating a thin film transistor, including forming a semiconductor layer having a pattern corresponding to that of the active layer on a base substrate; forming a first photoresist layer on a side of the semiconductor layer distal to the base substrate; the first photoresist layer being in an area corresponding to the channel region, the second doped region, and the fourth doped region; doping a region of the semiconductor layer corresponding to the first doped region and the third doped region using the first photoresist layer as a mask plate; forming a second photoresist layer by removing a portion of the first photoresist layer to expose an initial portion of the semiconductor layer corresponding to at least a portion of the second doped region and at least a portion of the fourth doped region; and doping the initial portion of the semiconductor layer using the second photoresist layer as a mask plate.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: June 18, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Ordos Yuansheng Optoelectronics Co., Ltd.
    Inventors: Chaochao Sun, Chao Wang, Huafeng Liu, Shengwei Zhao, Bule Shun, Lei Yang, Chongliang Hu, Meng Yang, Jingping Lv, Lin Xie, Shimin Sun, Duolong Ding