Patents by Inventor Ruifeng Li

Ruifeng Li 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: 20170223158
    Abstract: A terminal device, including a screen, a first camera, and a movement mechanism, where the first camera is disposed on a movable component of the movement mechanism, the movement mechanism is disposed on the back of the screen, and the movable component is configured to drive the first camera to move from the back of the screen to a position at which the first camera can be seen from in front of the terminal device.
    Type: Application
    Filed: July 23, 2014
    Publication date: August 3, 2017
    Inventors: Bangshi Yin, Ruifeng Li, Jianhong Luo, Xiulan Liu, Yan Wang, Jiuliang Gao, Fan Yang, Tao Wang, Hui Li
  • Publication number: 20160251489
    Abstract: This invention relates to a regenerated cellulose film, a functional film and preparation method thereof. The method mainly comprises the following steps: (1) shaping a cellulose/ionic liquid solution by die extrusion, calendering and casting; (2) the shaped solution entering into a coagulation bath to form a cellulose gel film; (3) in coagulation and washing processes, stretching the cellulose gel film at least 1 time in the transverse direction and at least 1 time in the longitudinal direction; (4) in drying process, further applying tension to the stretched film in the transverse and longitudinal directions, and finally obtaining a regenerated cellulose film by rolling. An organic and/or an inorganic functional additive can be added into the cellulose/ionic liquid solution to obtain a regenerated cellulose functional film.
    Type: Application
    Filed: August 22, 2014
    Publication date: September 1, 2016
    Inventors: Jun ZHANG, Xiaoyu ZHANG, Jian YU, Ruifeng LI, Jin WU, Yugang GAO, Jinming ZHANG, Jinjiang QIU
  • Patent number: 9374247
    Abstract: A channel estimation method including: a channel estimation device employs a two-dimensional channel estimation method and utilizes the channel estimate of an original pilot frequency to conduct channel estimation on an encrypted pilot frequency, so as to obtain the channel estimate of the encrypted pilot frequency; the channel estimation device employs a one-dimensional channel estimation method and utilizes the channel estimate of the encrypted pilot frequency to conduct channel estimation on all resources, so as to obtain the channel estimates on all resources.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: June 21, 2016
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Xiaojiao Li, Ruifeng Li, Wenshuo Zhang, Rui Shi
  • Publication number: 20160167017
    Abstract: The present invention relates to a method for preparing a sulfur-resistant catalyst for aromatics saturated hydrogenation, comprising the steps of: preparing noble metal impregnation solutions from a noble metal and deionized water or an acid solution; impregnating a carrier with the impregnation solutions sequentially from high to low concentrations by incipient impregnation; homogenizing, drying, and calcinating to obtain the sulfur-resistant catalyst for aromatics saturated hydrogenation. The catalyst for aromatics saturated hydrogenation prepared by the method according to the present invention is primarily used in processing low-sulfur and high-aromatics light distillate, middle distillate, atmospheric gas oil, and vacuum gas oil.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 16, 2016
    Inventors: Xiaodong YANG, Yanfeng LIU, Sheng HU, Chunmei YU, Hongling CHU, Xinmiao Wang, Shanbin GAO, Bin XIE, Famin SUN, Wencheng Zhang, Jintao GUO, Quanguo Zhang, Lili JIANG, Xiaofeng Wang, Yuanyuan JI, Ran SUN, Yuxiao FENG, Xianjun WU, Guojia ZHANG, Tan ZHAO, Wenyong LIU, Rui LI, Ruifeng LI, Cheng TANG
  • Publication number: 20160167029
    Abstract: Disclosed are a method for preparing a noble metal hydrogenation catalyst comprising preparing a carrier from a molecular sieve having a 10-member ring structure and/or an amorphous porous material; preparing a noble metal impregnation solution from one or more of compounds of noble metals Pt, Pd, Ru, Rh, Re, and Ir and deionized water or an acid solution; and preparing noble metal impregnation solutions in a concentration gradient ranging from 0.05 to 5.0 wt % with deionized water, and sequentially impregnating the carrier with the impregnation solutions from low to high concentrations during the carrier impregnation process, or preparing a noble metal impregnation solution at a low concentration ranging from 0.05 to 0.5 wt % and impregnating the carrier by gradually increasing the concentration of the noble metal impregnation solution to 2.0 to 5.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 16, 2016
    Inventors: Xiaodong YANG, Chunmei YU, Yanfeng LIU, Sheng HU, Zhihua ZHANG, Famin SUN, Wencheng ZHANG, Jintao GUO, Wenyong LIU, Xinmiao WANG, Shanbin GAO, Bin XIE, Jinxian JIANG, Yuhe YANG, Rui LI, Guojia ZHANG, Lili JIANG, Tan ZHAO, Dongqing WANG, Jingying ZHAO, Quanguo ZHANG, Ruifeng LI, Shengbo SUN, Hong LI, Cheng TANG
  • Patent number: 9350512
    Abstract: The present document provides a method for a User Equipment (UE) which activates multi-stream transmission to transmit a High Speed Dedicated Physical Control Channel (HS-DPCCH) and a UE thereof, wherein the method is applied in a multi-stream transmission system, and includes: after receiving High-Speed Physical Downlink Shared Channel (HS-PDSCH) subframes transmitted from primary and secondary serving cells, the UE which activates the multi-stream transmission transmitting a HS-DPCCH carrying jointly encoded Acknowledge/Negative Acknowledgement (ACK/NACK) and Channel Quality Indicator (CQI) after a predetermined duration by taking a later received HS-PDSCH subframe of the pair of paired HS-PDSCH subframes as a reference, wherein the predetermined duration is determined according to a timing correlation by which the UE transmits the HS-DPCCH subframe and correspondingly receives the HS-PDSCH subframe, which is specified in the 3rd Generation Partnership Project (3GPP) specification 25.211.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: May 24, 2016
    Assignee: ZTE Corporation
    Inventors: Shugong Lin, Junqiang Liu, Xiang Cheng, Ruifeng Li
  • Publication number: 20150312057
    Abstract: A channel estimation method, comprising: a channel estimation device employs a two-dimensional channel estimation method and utilizes the channel estimate of an original pilot frequency to conduct channel estimation on an encrypted pilot frequency, so as to obtain the channel estimate of the encrypted pilot frequency; the channel estimation device employs a one-dimensional channel estimation method and utilizes the channel estimate of the encrypted pilot frequency to conduct channel estimation on all resources, so as to obtain the channel estimates on all resources.
    Type: Application
    Filed: November 21, 2013
    Publication date: October 29, 2015
    Applicant: China Academy of Telecommunications Technology
    Inventors: Xiaojiao LI, Ruifeng LI, Wenshuo ZHANG, Rui SHI
  • Publication number: 20140241329
    Abstract: The present document provides a method for a User Equipment (UE) which activates multi-stream transmission to transmit a High Speed Dedicated Physical Control Channel (HS-DPCCH) and a UE thereof, wherein the method is applied in a multi-stream transmission system, and includes: after receiving High-Speed Physical Downlink Shared Channel (HS-PDSCH) subframes transmitted from primary and secondary serving cells, the UE which activates the multi-stream transmission transmitting a HS-DPCCH carrying jointly encoded Acknowledge/Negative Acknowledgement (ACK/NACK) and Channel Quality Indicator (CQI) after a predetermined duration by taking a later received HS-PDSCH subframe of the pair of paired HS-PDSCH subframes as a reference, wherein the predetermined duration is determined according to a timing correlation by which the UE transmits the HS-DPCCH subframe and correspondingly receives the HS-PDSCH subframe, which is specified in the 3rd Generation Partnership Project (3GPP) specification 25.211.
    Type: Application
    Filed: July 11, 2012
    Publication date: August 28, 2014
    Applicant: ZTE CORPORATION
    Inventors: Shugong Lin, Junqiang Liu, Xiang Cheng, Ruifeng Li
  • Publication number: 20120190340
    Abstract: The present invention provides a method for binding a (smart) secure device (2) to a wireless phone, said wireless phone comprising an identifier parameter, said secure device (2) being adapted to communicate with an Over-The-Air (OTA) server and being suitable for receiving services from a network operator in an authorised area determined with localisation parameters stored in the OTA server, wherein the method comprises the following steps: a. storing the identifier parameter of the wireless phone into the secure device (2) at a first powering on of the wireless phone; b. requesting a user registration on the OTA server so as to download the localisation parameters from the OTA server into the secure device (2). After successful registration confirmation from OTA server, for each powering on, the secure device (2) compares the above two parameters in the secure device (2) with the values from the phone, if they are not the same, authentication is forbidden.
    Type: Application
    Filed: September 8, 2009
    Publication date: July 26, 2012
    Applicant: GEMALTO SA
    Inventors: Ruifeng Li, Jing Ouyang, Bin Zhang, Fang Yang