Patents by Inventor CHUNMEI WANG

CHUNMEI WANG 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).

  • Publication number: 20230274248
    Abstract: Some embodiments provide image evaluation systems and methods, comprising: a plurality of camera systems distributed about a retail facility and each of the plurality of camera systems; and an image processing system configured to receive multiple images over time, process each image comprising: determine, from pixel data, a gradient amplitude and directional component; determine a histogram curve from the gradient amplitudes as a function of the directional component of the pixel data, and identify a key direction relative to a maximum accumulation of the gradient amplitudes; for the gradient amplitudes, of the pixel data, having a corresponding directional component that is within a direction threshold of the key direction, identify a number of local maxima corresponding to the key direction; and determine a quantity of items of the product corresponding to a quantity of the number of local maxima.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 31, 2023
    Inventors: Zhichun Xiao, Chunmei Wang
  • Publication number: 20230245535
    Abstract: In some embodiments, apparatuses and methods are provided herein useful to self-checkout verification at a retail facility. In some embodiments, there is provided a system for self-checkout verification at a retail facility including a first optical imaging unit; and a control circuit. The control circuit configured to: receive purchase receipt data; receive one or more images of the items in the container; and execute a machine learning model trained to: perform item detection, item classification, and item verification of each item shown in the one or more images; and output electronic data corresponding to an electronic receipt of the items in the container. The control circuit may automatically detect each unpaid item in the container based on a comparison of the purchase receipt data with the electronic data; and provide an alert signal in response to automatically detecting an unpaid item.
    Type: Application
    Filed: January 27, 2023
    Publication date: August 3, 2023
    Inventors: Zhichun Xiao, Lingfeng Zhang, Yutao Tang, Mingquan Yuan, Tianyi Mao, Han Zhang, Chunmei Wang, Feiyun Zhu, Zhaoliang Duan, Yanmei Jin, Jing Wang, Wei Wang, Ranran Cao, Zhiwei Huang
  • Publication number: 20210118610
    Abstract: An integrated magnetic element includes an accommodating part; a current sensor disposed on the accommodating part; and a transformer disposed on the accommodating part. The transformer includes a magnetic core, a first winding including a plurality of wires, and a second winding, wherein some of the plurality of wires passes through the current sensor to shunt and detect current flowing through the first winding, and current values of the wires are detected by the current sensor to obtain a total current value of the first winding of the transformer according to a shunt ratio by the winding construction of the preset transformer.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 22, 2021
    Inventors: Xiaoxia SUN, Chunmei WANG, Jun SUN, Haijun YANG, Zengyi LU
  • Publication number: 20210019725
    Abstract: A transaction record is created showing a purchase transaction of a customer. A CV profile showing a list of items in the transaction obtained from images is also obtained. The items in the transaction record are compared to items on the list. When there is a discrepancy, an action to take is determined.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Inventors: Zhichun Xiao, Lingfeng Zhang, Jon Hammer, Joseph Duffy, Yao Liu, Sicong Fang, Xiang Yao, Pingyuan Wang, Yu Tao, Tianyi Mao, Yutao Tang, Feiyun Zhu, Han Zhang, Chunmei Wang, Pingjian Yu, Muzzammil Afroz, Haining Liu
  • Patent number: 10792642
    Abstract: The present invention relates to the field of isobutylene preparation. Disclosed are a catalyst and preparation method thereof, and method for preparing isobutylene by applying the same; the catalyst has a core-shell structure, the core an amorphous silica-alumina particle and/or an aggregate molding thereof, and the shell aluminum oxide comprising silicon and tin; the weight ratio of aluminum oxide comprising silicon and tin to amorphous silica-alumina is 1:60-1:3; in the aluminum oxide comprising silicon and tin, on basis of the weight of aluminum oxide comprising silicon and tin, the content of silicon is 0.5-2 wt %, and of tin is 0.2-1 wt %. The catalyst of the present invention is used to catalyze a mixture of MTBE and TBA to prepare isobutylene, enabling the MTBE cleavage and TBA dehydration reactions to be conducted simultaneously to generate isobutylene, achieving higher conversion rates of TBA and MTBE, and higher selectivity for generating isobutylene.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: October 6, 2020
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC CORP.
    Inventors: Shumei Zhang, Feng Zhou, Kai Qiao, Qingtong Zhai, Chunmei Wang
  • Patent number: 10395815
    Abstract: A magnetic device includes a housing, a bobbin, at least one coil, and a first magnetic core and a second magnetic core. The housing has at least one side plate and a bottom plate. The side plate stands on the bottom plate and forms a space with the bottom plate. The bobbin is at least partially located in the space. The bobbin has a cylinder. The at least one coil is wound around the cylinder. Each of the first and second magnetic cores includes a center column, a side column, a connecting portion, and a metal clip. The center column is located in the cylinder. The side column is located outside the coil and away from the bottom plate, such that the coil is located between the side column and the bottom plate. The connecting portion connects the center column and the side column.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: August 27, 2019
    Assignee: Delta Electronics, Inc.
    Inventors: Haijun Yang, Chunmei Wang, Chen Zeng, Zengyi Lu, Jinfa Zhang
  • Patent number: 10332668
    Abstract: A copper winding structure includes a first copper sheet having a first body, a first extending part and a second extending part located at two ends of the first body, respectively; and a second copper sheet having a second body, a third extending part and a fourth extending part located at two ends of the second body, respectively, the third extending part intersects with the fourth extending part such that the second body is partially overlapped; after the first copper sheet is stacked with the second copper sheet, the second extending part aligns with the third extending part, and the first extending part and the fourth extending part are located on the same side with respect to the second extending part and the third extending part.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: June 25, 2019
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO.,LTD.
    Inventors: Zengyi Lu, Xingkuan Guo, Chunmei Wang, Jun Sun
  • Publication number: 20190115141
    Abstract: A copper winding structure includes a first copper sheet having a first body, a first extending part and a second extending part located at two ends of the first body, respectively; and a second copper sheet having a second body, a third extending part and a fourth extending part located at two ends of the second body, respectively, the third extending part intersects with the fourth extending part such that the second body is partially overlapped; after the first copper sheet is stacked with the second copper sheet, the second extending part aligns with the third extending part, and the first extending part and the fourth extending part are located on the same side with respect to the second extending part and the third extending part.
    Type: Application
    Filed: May 10, 2018
    Publication date: April 18, 2019
    Inventors: Zengyi LU, Xingkuan GUO, Chunmei WANG, Jun SUN
  • Publication number: 20180350512
    Abstract: A magnetic device includes a housing, a bobbin, at least one coil, and a first magnetic core and a second magnetic core. The housing has at least one side plate and a bottom plate. The side plate stands on the bottom plate and forms a space with the bottom plate. The bobbin is at least partially located in the space. The bobbin has a cylinder. The at least one coil is wound around the cylinder. Each of the first and second magnetic cores includes a center column, a side column, a connecting portion, and a metal clip. The center column is located in the cylinder. The side column is located outside the coil and away from the bottom plate, such that the coil is located between the side column and the bottom plate. The connecting portion connects the center column and the side column.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 6, 2018
    Applicant: Delta Electronics,Inc.
    Inventors: Haijun YANG, Chunmei WANG, Chen ZENG, Zengyi LU, Jinfa ZHANG
  • Publication number: 20170333876
    Abstract: The present invention relates to the field of isobutylene preparation. Disclosed are a catalyst and preparation method thereof, and method for preparing isobutylene by applying the same; the catalyst has a core-shell structure, the core an amorphous silica-alumina particle and/or an aggregate molding thereof, and the shell aluminum oxide comprising silicon and tin; the weight ratio of aluminum oxide comprising silicon and tin to amorphous silica-alumina is 1:60-1:3; in the aluminum oxide comprising silicon and tin, on basis of the weight of aluminum oxide comprising silicon and tin, the content of silicon is 0.5-2 wt %, and of tin is 0.2-1 wt %. The catalyst of the present invention is used to catalyze a mixture of MTBE and TBA to prepare isobutylene, enabling the MTBE cleavage reaction and TBA dehydration reactions to be conducted simultaneously to generate isobutylene, achieving higher conversion rates of TBA and MTBE, and higher selectivity for generating isobutylene.
    Type: Application
    Filed: November 25, 2015
    Publication date: November 23, 2017
    Applicant: China Petroleum & Chemical Corporation
    Inventors: Shumei ZHANG, Feng ZHOU, Kai QIAO, Qingtong ZHAI, Chunmei WANG
  • Patent number: 9708229
    Abstract: Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: July 18, 2017
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, FUSHUN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC
    Inventors: Shumei Zhang, Kai Qiao, Ming Chen, Qingtong Zhai, Changxin Guo, Chunmei Wang
  • Patent number: 9406942
    Abstract: Disclosed herein are embodiments of an apparatus for preparing rotating disk electrodes. One such apparatus comprises a base, a plurality of disk mounts attached to the base, each configured to receive a respective rotating disk, a plurality of motors each coupled to a corresponding one of the plurality of disk mounts and configured to rotate the corresponding one of the plurality of disk mounts and a controller configured to individually operate each of the plurality of motors.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: August 2, 2016
    Assignee: NISSAN NORTH AMERICA, INC.
    Inventors: Chunmei Wang, Nilesh Dale, Kevork Adjemian
  • Publication number: 20160022689
    Abstract: This invention is involved in the field of pharmaceutical technology. It is related to a triazine compound for resisting coccidiosis in chickens, its preparation method and application. This compound has the structure below.
    Type: Application
    Filed: November 6, 2014
    Publication date: January 28, 2016
    Inventors: Lifang Zhang, Feiqun Xue, Chenzhong Fei, Keyu Zhang, Wenli Zheng, Xiaoyang Wang, Depeng Zhang, Chao Fan, Wenlong Xiao, Mi Wang, Tao Li, Chunmei Wang, Sui Xiao
  • Publication number: 20140275683
    Abstract: Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether.
    Type: Application
    Filed: October 24, 2012
    Publication date: September 18, 2014
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, FUSHUN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC
    Inventors: Shumei Zhang, Kai Qiao, Ming Chen, Qingtong Zhai, Changxin Guo, Chunmei Wang
  • Patent number: 8808660
    Abstract: The present invention relates to a method of precipitation of metal ions. Mineral(s), oxide(s), hydroxide(s) of magnesium and/or calcium are adopted as raw materials, and the raw material(s) is processed through at least one step of calcination, slaking, or carbonization to produce aqueous solution(s) of magnesium bicarbonate and/or calcium bicarbonate, and then the solution(s) is used as precipitant(s) to deposit rare earth, such as nickel, cobalt, iron, aluminum, gallium, indium, manganese, cadmium, zirconium, hafnium, strontium, barium, copper and zinc ions. And at least one of metal carbonates, hydroxides or basic carbonates is obtained, or furthermore the obtained products are calcined to produce metal oxides. The invention takes the cheap calcium and/or magnesium minerals or their oxides, hydroxides with low purity as raw materials to instead common precipitants such as ammonium bicarbonate and sodium carbonate etc.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: August 19, 2014
    Assignee: Grirem Advanced Materials Co., Ltd.
    Inventors: Xiaowei Huang, Zhiqi Long, Hongwei Li, Dali Cui, Xinlin Peng, Guilin Yang, Yongke Hou, Chunmei Wang, Shunli Zhang
  • Patent number: 8721998
    Abstract: The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: May 13, 2014
    Assignee: Grirem Advanced Materials Co., Ltd.
    Inventors: Xiaowei Huang, Zhiqi Long, Xinlin Peng, Hongwei Li, Guilin Yang, Dali Cui, Chunmei Wang, Na Zhao, Liangshi Wang, Ying Yu
  • Publication number: 20140004474
    Abstract: Disclosed herein are embodiments of an apparatus for preparing rotating disk electrodes. One such apparatus comprises a base, a plurality of disk mounts attached to the base, each configured to receive a respective rotating disk, a plurality of motors each coupled to a corresponding one of the plurality of disk mounts and configured to rotate the corresponding one of the plurality of disk mounts and a controller configured to individually operate each of the plurality of motors.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: NISSAN NORTH AMERICA, INC.
    Inventors: CHUNMEI WANG, NILESH DALE, KEVORK ADJEMIAN
  • Patent number: 8507330
    Abstract: A method is proposed for producing a thin-film transistor (TFT), the method comprising forming a substrate, applying a ZnO-based precursor solution onto the substrate to form a ZnO-based channel layer, annealing the channel layer, forming a source electrode and a drain electrode on the channel layer, forming a dielectric layer on the channel layer and forming a gate electrode on the dielectric layer.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: August 13, 2013
    Assignee: Sony Corporation
    Inventors: Chunmei Wang, Wei Beng Ng, Takehisa Ishida
  • Publication number: 20110280778
    Abstract: The present invention relates to a method of precipitation of metal ions. Mineral(s), oxide(s), hydroxide(s) of magnesium and/or calcium are adopted as raw materials, and the raw material(s) is processed through at least one step of calcination, slaking, or carbonization to produce aqueous solution(s) of magnesium bicarbonate and/or calcium bicarbonate, and then the solution(s) is used as precipitant(s) to deposit rare earth, such as nickel, cobalt, iron, aluminum, gallium, indium, manganese, cadmium, zirconium, hafnium, strontium, barium, copper and zinc ions. And at least one of metal carbonates, hydroxides or basic carbonates is obtained, or furthermore the obtained products are calcined to produce metal oxides. The invention takes the cheap calcium and/or magnesium minerals or their oxides, hydroxides with low purity as raw materials to instead common precipitants such as ammonium bicarbonate and sodium carbonate etc.
    Type: Application
    Filed: February 9, 2010
    Publication date: November 17, 2011
    Inventors: Xiaowei Huang, Zhiqi Long, Hongwei Li, Dali Cui, Xinlin Peng, Guilin Yang, Yongke Hou, Chunmei Wang, Shunli Zhang
  • Patent number: D999518
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: September 26, 2023
    Inventor: Chunmei Wang