Patents by Inventor Ruifeng Liu

Ruifeng 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: 10989949
    Abstract: The present disclosure provides a liquid crystal display module, a manufacturing method thereof and a display device. The liquid crystal display module includes: a cover plate; a TFT array substrate disposed on one side of the cover plate; and an opposite substrate disposed on one side of the TFT array substrate away from the cover plate, a liquid crystal layer being filled between the TFT array substrate and the opposite substrate, the TFT array substrate includes a first portion opposite to the opposite substrate and a second portion extending beyond the opposite substrate, a drive circuit being disposed on one side of the second portion away from the cover plate; a backlight disposed on one side of the opposite substrate away from the TFT array substrate, and a heat shielding layer disposed between the second portion and the backlight.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: April 27, 2021
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Junhuan Liu, Ruifeng Yang, Huaxu Yang, Libao Cui, Feng Han
  • Patent number: 10988753
    Abstract: The present invention discloses an aspartase variant, method of preparing the same and use thereof. Compared with sequence 2 in the sequence listing, the amino acid sequence of the aspartase variant provided in the present invention has more than 96% identity, and there are mutations in T187I and N326C at positions 187 and 326, respectively, and has improved catalytic activity for the ammoniation of acrylic acid, compared with the aspartase shown in sequence 2. The experiment proves that the aspartase variant provided in the present invention does have improved catalytic activity for the ammoniation of acrylic acid compared with the wild type parent aspartase, and has better thermal stability and pH spectrum. The reaction can greatly increase the conversion ratio of acrylic acid.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 27, 2021
    Assignee: QINHUANGDAO HUAHENG BIOENGINEERING CO., LTD.
    Inventors: Bian Wu, Yang Liu, Ruifeng Li, Dongzhu Zhang, Zhicheng Liu, Hui Zhang
  • Publication number: 20200305933
    Abstract: The present disclosure provides an adjustable double-slot internal spinal fixation apparatus, including a first base, a second base and a connecting rod. The first base and the second base each contains a U-shaped slot from top to bottom. An inner wall of each U-shaped slot contains inner threads. The connecting rod is disposed along a horizontal direction. The second base contains a long slot along the horizontal direction. One end of the connecting rod is inserted in the first base, and the other end of the connecting rod is inserted in the long slot of the second base. The connecting rod can swing in the long slot. The first base and the second base are capable of relatively rotating on the connecting rod.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 1, 2020
    Applicant: Shanghai Sanyou Medical Co., Ltd.
    Inventors: Zezhang ZHU, Yong QIU, Michael Mingyan LIU, Ruifeng LIU
  • Publication number: 20180303519
    Abstract: A transverse shift screw tail, a transverse adjustable spinal screw, and an implantation method. The screw comprises a screw tail and a screw seat, the screw seat has a rod groove used for placing a connecting rod, which is recessed downwards from the top of the screw seat and radially penetrates the screw seat, a bottom of the rod groove is a curved surface adapted to an outer circumferential surface of the connecting rod, and the rod groove is provided with a locking thread fit with a locking bolt. The screw tail comprises a fixing column capable of being screwed into a vertebral body and a platform located at an end portion of the fixing column, the platform is provided with the installation head used for connecting with the screw seat, and an eccentric distance is provided between a center of the installation head and an axis of the fixing column.
    Type: Application
    Filed: June 8, 2016
    Publication date: October 25, 2018
    Applicant: SHANGHAI SANYOU MEDICAL CO., LTD.
    Inventors: MICHAEL MINGYAN LIU, YONG QIU, YUEMING SONG, QIXIN CHEN, JEAN-CHARLES LEHUEC, RUIFENG LIU
  • Publication number: 20170143967
    Abstract: A cholinergic deep brain stimulator is provided that can be used to increase brain acetylcholine levels. This increase in acetylcholine levels improves cognition and may be used to remediate disorders in which cognitive loss is a prominent symptom including Alzheimer's Disease, vascular dementia, traumatic brain injury, or drug addiction.
    Type: Application
    Filed: November 25, 2016
    Publication date: May 25, 2017
    Inventors: David T. Blake, JR., Ruifeng Liu, Jonathan M. Crawford, Christos Constantinidis, Alvin V. Terry, JR.
  • Publication number: 20090217125
    Abstract: Methods and apparatuses to perform iterative decoding of Low Density Parity Check (LDPC) codes based on selecting a lambda number of minimum values. In one aspect, an LDPC decoder, includes: means for sorting a plurality of incoming messages of a check node according to magnitudes of the incoming messages; means for identifying a predetermined number of unique message magnitudes from the incoming messages; and means for computing outgoing messages for a subset of the plurality of incoming message, where the messages of the subset have different magnitudes larger than the predetermined number of unique message magnitudes but the outgoing messages are computed to have the same magnitude. In at least one embodiment, the decoder further includes means for computing outgoing messages that have magnitudes equal to any of the predetermined number of unique message magnitudes. In general, the magnitudes computed for all outgoing messages may not necessarily be the same.
    Type: Application
    Filed: February 23, 2008
    Publication date: August 27, 2009
    Applicant: Montage Technology Group, Ltd.
    Inventor: Ruifeng Liu