Patents by Inventor Ju Feng

Ju Feng 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: 20240084911
    Abstract: A valve device is provided, including a valve body unit and a valve seat. The valve seat is provided with a mounting cavity, and an end of the valve body unit is mounted in the mounting cavity. The valve device further includes a limiting unit, an outer side wall of the valve seat is provided with a mounting hole in communication with the mounting cavity along a radial direction of the mounting cavity, a side wall of the mounting cavity is recessed to form a mounting groove corresponding to the mounting hole, an end of the limiting unit extends into the mounting cavity from the mounting hole and is inserted into the mounting groove, and the limiting unit that extends into the mounting cavity abuts against the valve body unit to perform limiting along an axial direction and a circumferential direction between the valve body unit and the valve seat.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Inventors: Zhongbo FENG, Ju JIN, Fugang WANG, Wenrong ZHANG, Zhiguo SONG
  • Publication number: 20180222622
    Abstract: The present disclosure relates to a container and a system for containing liquid crystal, in the field of manufacture of display devices. The container for containing liquid crystal comprises a bottle body. The lower part of the bottle body is a concave structure, the bottom surface of the concave structure is a flat surface or a concave surface, and the opening of the concave structure faces to the opening of the bottle body. The present disclosure solves the problem of the low one-round utilization ratio of the liquid crystal in the liquid crystal bottle and increases the one-round utilization ratio of the liquid crystal in the liquid crystal bottle. This disclosure is applied to display devices.
    Type: Application
    Filed: December 13, 2017
    Publication date: August 9, 2018
    Inventors: Ju Feng, Qingshuo Li, Yangxiao Ou, Yan Wang, Tao Luo
  • Patent number: 9634592
    Abstract: A method of estimating a rotational position of a motor having saliency includes the steps of a) superimposing, on a drive voltage to rotate a rotating portion of the motor, a measuring voltage having a predetermined frequency higher than a frequency of the drive voltage to generate a plurality of voltages, and supplying the plurality of voltages to a stationary portion of the motor; b) in parallel with step a), extracting a component of the predetermined frequency in a current flowing in the stationary portion as an extracted current; c) calculating a sum of squares of the extracted current and a phase-shifted current obtained by shifting a phase of the extracted current by ?/2 to acquire a composite signal related to an amplitude of the extracted current; and d) acquiring a rotational position of the rotating portion based on the composite signal.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 25, 2017
    Assignees: NIDEC SINGAPORE PTE., LTD., NIDEC CORPORATION
    Inventor: Ju Feng
  • Patent number: 9556282
    Abstract: A modified cellulose is provided. The modified cellulose is represented by the chemical formula (1): wherein n is between 60 and 2500, at least one R is selected from one of the group consisting of R1 is C11 to C32 alkyl group or C11 to C32 alkenyl group, R2 is hydrogen, C3 to C29 alkyl group or C3 to C29 alkenyl group, R3 is C3 to C29 alkyl group or C3 to C29 alkenyl group, R4 is C4 to C8 cycloalkyl group or C4 to C8 cycloalkenyl group, n2 is between 15 and 33, n4 is between 20 and 40.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 31, 2017
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yu-Ying Hsu, Te-Yi Chang, Ju-Feng Liao, Sheng-Ju Liao, Yao-Jheng Huang
  • Patent number: 9548687
    Abstract: A method of estimating a rotational position of a motor having saliency, the method including the steps of a) superimposing, on a drive voltage for the motor, a measuring voltage having a predetermined frequency higher than a frequency of the drive voltage to generate three-phase voltages, and supplying the three-phase voltages to a stationary portion of the motor; b) in parallel with step a), extracting components of the predetermined frequency in three-phase currents flowing in the stationary portion as first, second, and third extracted currents; c) multiplying the first and second extracted currents together to acquire a first composite signal, multiplying the second and third extracted currents together to acquire a second composite signal, and multiplying the first and third extracted currents together to acquire a third composite signal; d) subjecting the first, second, and third composite signals to low-pass filtering to acquire first, second, and third filtered signals, respectively, the low-pass fil
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: January 17, 2017
    Assignees: NIDEC SINGAPORE PTE., LTD., NIDEC CORPORATION
    Inventor: Ju Feng
  • Publication number: 20160301338
    Abstract: A method of estimating a rotational position of a motor having saliency includes the steps of a) superimposing, on a drive voltage to rotate a rotating portion of the motor, a measuring voltage having a predetermined frequency higher than a frequency of the drive voltage to generate a plurality of voltages, and supplying the plurality of voltages to a stationary portion of the motor; b) in parallel with step a), extracting a component of the predetermined frequency in a current flowing in the stationary portion as an extracted current; c) calculating a sum of squares of the extracted current and a phase-shifted current obtained by shifting a phase of the extracted current by ?/2 to acquire a composite signal related to an amplitude of the extracted current; and d) acquiring a rotational position of the rotating portion based on the composite signal.
    Type: Application
    Filed: February 4, 2016
    Publication date: October 13, 2016
    Inventor: Ju FENG
  • Publication number: 20160301337
    Abstract: A method of estimating a rotational position of a motor having saliency, the method including the steps of a) superimposing, on a drive voltage for the motor, a measuring voltage having a predetermined frequency higher than a frequency of the drive voltage to generate three-phase voltages, and supplying the three-phase voltages to a stationary portion of the motor; b) in parallel with step a), extracting components of the predetermined frequency in three-phase currents flowing in the stationary portion as first, second, and third extracted currents; c) multiplying the first and second extracted currents together to acquire a first composite signal, multiplying the second and third extracted currents together to acquire a second composite signal, and multiplying the first and third extracted currents together to acquire a third composite signal; d) subjecting the first, second, and third composite signals to low-pass filtering to acquire first, second, and third filtered signals, respectively, the low-pass fil
    Type: Application
    Filed: February 4, 2016
    Publication date: October 13, 2016
    Inventor: Ju FENG
  • Publication number: 20160185878
    Abstract: A modified cellulose is provided. The modified cellulose is represented by the chemical formula (1): wherein n is between 60 and 2500, at least one R is selected from one of the group consisting of R1 is C11 to C32 alkyl group or C11 to C32 alkenyl group, R2 is hydrogen, C3 to C29 alkyl group or C3 to C29 alkenyl group, R3 is C3 to C29 alkyl group or C3 to C29 alkenyl group, R4 is C4 to C8 cycloalkyl group or C4 to C8 cycloalkenyl group, n2 is between 15 and 33, n4 is between 20 and 40.
    Type: Application
    Filed: December 10, 2015
    Publication date: June 30, 2016
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yu-Ying HSU, Te-Yi CHANG, Ju-Feng LIAO, Sheng-Ju LIAO, Yao-Jheng HUANG
  • Patent number: 9063196
    Abstract: A slow Magic-Angle Spinning NMR device and method are detailed that provide high resolution and high sensitivity metabolic profiling of biological samples. A new 1H-PASS sequence suppresses line broadening in the various biological samples. The device and method allow metabolic changes in small animals to be tracked through continuous investigations of minimally-invasive blood and tissue biopsy samples over a sustained period and allow intact biological objects with sizes up to a few centimeters to be studied.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: June 23, 2015
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Jian Zhi Hu, Ju Feng, Hardeep S. Mehta
  • Patent number: 8861140
    Abstract: A slider supporting apparatus of includes a base portion; a flexure supported by the base portion; a contact portion being provided on a leading portion of the flexure for urging a trailing edge of the slider to contact with pads on the trailing edge; a support plate attached beneath a tongue; and a clamp comprising a mounting portion fixed on the support plate, two spring arms downward extended from the mounting portion to pass through a hole of the flexure slantwise, and a connection bar connected with two ends of the spring arms for urging a leading edge of the slider to provide a downward component force to the slider. The apparatus provides a larger spring stroke with long lifetime to reduce cost, and avoid pitch and roll static torque to generate so as to prevent the slider popping out the suspension during slider testing process.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: October 14, 2014
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Yu Xin Chen, Fang Long Nie, Ho Hang Keith Wong, Liang Xing, Chao Luo, Ri Xin Cai, Yan Ju Feng
  • Patent number: 8822117
    Abstract: The present invention relates to a chemical toner composition and a method for preparing the same. The chemical toner composition includes: a resin emulsion; a pigment dispersion; a wax dispersion; and a dispersible polymer coagulant, wherein the dispersible polymer coagulant is a copolymer comprising unsaturated ester monomers and amino-containing monomers. Accordingly, the present invention uses a novel dispersible polymer coagulant to prepare uniform toner particles with excellent roundness and improved flowability and to reduce moisture absorption.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: September 2, 2014
    Assignee: Trend Tone Imaging, Inc.
    Inventors: Kuei-Ying Chiu, Kuo-Tong Huang, Ju-Feng Liao, I-Jein Cheng, Jui-Fa Chang, Chien-Sheng Huang, Yi-Ling Liu
  • Patent number: 8557496
    Abstract: The present invention relates to a chemical toner composition and a method for preparing the same. The chemical toner composition includes: a resin emulsion; a pigment dispersion; a wax dispersion; and a dispersible polymer coagulant, wherein the dispersible polymer coagulant is a copolymer comprising unsaturated ester monomers and amino-containing monomers. Accordingly, the present invention uses a novel dispersible polymer coagulant to prepare uniform toner particles with excellent roundness and improved flowability and to reduce moisture absorption.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: October 15, 2013
    Assignee: Trend Tone Imaging, Inc.
    Inventors: Kuei-Ying Chiu, Kuo-Tong Huang, Ju-Feng Liao, I-Jein Cheng, Jui-Fa Chang, Chien-Sheng Huang, Yi-Ling Liu
  • Publication number: 20130257432
    Abstract: A slow Magic-Angle Spinning NMR device and method are detailed that provide high resolution and high sensitivity metabolic profiling of biological samples. A new 1H-PASS sequence suppresses line broadening in the various biological samples. The device and method allow metabolic changes in small animals to be tracked through continuous investigations of minimally-invasive blood and tissue biopsy samples over a sustained period and allow intact biological objects with sizes up to a few centimeters to be studied.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Jian Zhi Hu, Ju Feng, Hardeep S. Mehta
  • Patent number: 8283099
    Abstract: Disclosed are a biomass chemical toner composition and a method for manufacturing the same. First, a biomass resin is mixed with a first hydrophobic resin to form organic particles. The organic particles, a second hydrophobic resin, and a pigment are mixed by emulsion aggregation to form cores. Subsequently, a third hydrophobic resin is formed on the surface of the cores, and the third hydrophobic resin is further heated and coalesced to form a continuous structure encapsulating the cores. Accordingly, the biomass chemical toner obtained from the described method has good anti-humidity, good charge stability, and low fusing temperature.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: October 9, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Kuo-Tung Huang, Ju-Feng Liao, I-Jein Cheng, Jui-Fa Chang, Yu-Chin Lin, Hsiang-Yun Lee, Yu-Ying Hsu
  • Publication number: 20120189957
    Abstract: The present invention relates to a chemical toner composition and a method for preparing the same. The chemical toner composition includes: a resin emulsion; a pigment dispersion; a wax dispersion; and a dispersible polymer coagulant, wherein the dispersible polymer coagulant is a copolymer comprising unsaturated ester monomers and amino-containing monomers. Accordingly, the present invention uses a novel dispersible polymer coagulant to prepare uniform toner particles with excellent roundness and improved flowability and to reduce moisture absorption.
    Type: Application
    Filed: April 9, 2012
    Publication date: July 26, 2012
    Applicant: Trend Tone Imaging, Inc.
    Inventors: Kuei-Ying CHIU, Kuo-Tong HUANG, Ju-Feng LIAO, I-Jein CHENG, Jui-Fa CHANG, Chien-Sheng HUANG, Yi-Ling LIU
  • Publication number: 20110143276
    Abstract: Disclosed are a biomass chemical toner composition and a method for manufacturing the same. First, a biomass resin is mixed with a first hydrophobic resin to form organic particles. The organic particles, a second hydrophobic resin, and a pigment are mixed by emulsion aggregation to form cores. Subsequently, a third hydrophobic resin is formed on the surface of the cores, and the third hydrophobic resin is further heated and coalesced to form a continuous structure encapsulating the cores. Accordingly, the biomass chemical toner obtained from the described method has good anti-humidity, good charge stability, and low fusing temperature.
    Type: Application
    Filed: March 22, 2010
    Publication date: June 16, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuo-Tung Huang, Ju-Feng Liao, I-Jein Cheng, Jui-Fa Chang, Yu-Chin Lin, Hsiang-Yun Lee, Yu-Ying Hsu
  • Publication number: 20100055591
    Abstract: The present invention relates to a chemical toner composition and a method for preparing the same. The chemical toner composition includes: a resin emulsion; a pigment dispersion; a wax dispersion; and a dispersible polymer coagulant, wherein the dispersible polymer coagulant is a copolymer comprising unsaturated ester monomers and amino-containing monomers. Accordingly, the present invention uses a novel dispersible polymer coagulant to prepare uniform toner particles with excellent roundness and improved flowability and to reduce moisture absorption.
    Type: Application
    Filed: December 16, 2008
    Publication date: March 4, 2010
    Applicant: Trend Tone Imaging, Inc.
    Inventors: Kuei-Ying Chiu, Kuo-Tong Huang, Ju-Feng Liao, I-Jein Cheng, Jui-Fa Chang, Chien-Sheng Huang, Yi-Ling Liu