Patents by Inventor QingFeng Zhu

QingFeng Zhu 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: 20210161013
    Abstract: This application provides a printed circuit board. The printed circuit board includes a first outer conducting layer, a second outer conducting layer, and at least one insulation medium layer sandwiched between the first outer conducting layer and the second outer conducting layer. The printed circuit board includes a gold finger area and a soldering area. A total thickness of all conducting layers in the gold finger area is greater than that of all conducting layers in the soldering area. Because the total thickness of all conducting layers in the gold finger area is relatively thick, resistance of the gold finger area can be reduced, and a through-current capability of the gold finger area is improved. In addition, the total thickness of all conducting layers in the soldering area is relatively thin, so that a sufficient soldering temperature and a good soldering effect can be ensured.
    Type: Application
    Filed: February 3, 2021
    Publication date: May 27, 2021
    Inventors: Zongxun CHEN, Zuyu CHEN, Qingfeng ZHU
  • Publication number: 20200011158
    Abstract: A method for drilling includes obtaining formation-measurement pairings, training a machine-learning model using the formation-measurement pairings, receiving measurements obtained by a tool positioned in a well formed in a formation, and generating a formation model of at least a portion of the formation using the machine-learning model and the measurements. The formation model represents one or more physical parameters of the formation, one or more structural parameters of the formation, or both.
    Type: Application
    Filed: July 5, 2019
    Publication date: January 9, 2020
    Inventors: Yan Kai Xu, Qingfeng Zhu, Hui Xie, Helen Xiaoyan Zhong, Ettore Mirto, Aria Abubakar, Yao Feng, Ping Zhang
  • Patent number: 10210638
    Abstract: A method for integrating graphical logging content of a subterranean wellbore includes processing a plurality of digitized display images and relevant context information to generate a single synchronized display image including representations of each of the plurality of display image. The plurality of digitized display images and relevant context information are received at a central processor from a corresponding plurality of source tools or source processors. The display images are representative of subterranean wellbore conditions.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 19, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Qingfeng Zhu, Jean Seydoux, Ettore Mirto, Denis Heliot
  • Publication number: 20170301116
    Abstract: A method for integrating graphical logging content of a subterranean wellbore includes processing a plurality of digitized display images and relevant context information to generate a single synchronized display image including representations of each of the plurality of display image. The plurality of digitized display images and relevant context information are received at a central processor from a corresponding plurality of source tools or source processors. The display images are representative of subterranean wellbore conditions.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 19, 2017
    Inventors: Qingfeng ZHU, Jean Seydoux, Ettore Mirto, Denis Heliot
  • Publication number: 20110121750
    Abstract: Various embodiments relate to a self-oscillating half-bridge drive device, which may include a half-bridge inverter circuit having a first primary switch and a second primary switch; and a pull-down unit. The pull-down unit may prevent the other of the primary switches from being turned on when one of the primary switches is in an on state so as to avoid turning on of both primary switches. In addition, various embodiments also relate to a light-emitting device having such a self-oscillating half-bridge drive device.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 26, 2011
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Wei Chen, Yingxuan Lin, Dan Liu, Qingfeng Zhu
  • Patent number: 7603236
    Abstract: The present invention is a method of determining fluid phase distribution and quantifying holdup in a wellbore. The method includes receiving a plurality of oriented probe data and grouping the oriented probe data based on a depth interval. The grouped probe data is processed and fluid phase distribution information is generated based on the processed result.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: October 13, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert James North, QingFeng Zhu, Gang Xu, Hui Jin
  • Publication number: 20080046186
    Abstract: A method of determining fluid phase distribution comprises receiving a plurality of oriented probe data; grouping the oriented probe data based on a depth interval; processing the grouped probe data; and generating fluid phase distribution information based on the processed result.
    Type: Application
    Filed: August 21, 2006
    Publication date: February 21, 2008
    Inventors: Robert James North, QingFeng Zhu, Gang Xu, Hui Jin