Patents by Inventor Zhaohong Wu

Zhaohong Wu 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).

  • Method and device for alternating depths marine seismic acquisition
    Patent number: 9733375
    Abstract: System and method for enriching a bandwidth of seismic data related to a subsurface of a body of water. The system includes streamers and sources that are towed at alternating depths during consecutive and/or adjacent line of sails or during the same line of sail.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: August 15, 2017
    Assignee: CGGVERITAS SERVICES (U.S.) INC.
    Inventor: Zhaohong Wu
  • Steering submersible float for seismic sources and related methods
    Patent number: 9341730
    Abstract: Seismic sources including a steerable submersible float and related methods are provided. A seismic source includes a submersible float and a plurality of individual sources. The submersible float is configured to control at least one of a depth and a horizontal position of the submersible float by adjusting angles of one or more rotatable surfaces attached to the submersible float. The individual sources hang under the submersible float and are configured to operate at a depth larger than the depth of the submersible float.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: May 17, 2016
    Assignee: CGG SERVICES SA
    Inventor: Zhaohong Wu
  • Active cleaning device for seismic streamers and related methods
    Patent number: 9254509
    Abstract: A cleaning device for cleaning a marine streamer towed underwater and related methods are provided. The cleaning device includes a housing configured to be attached to the streamer, a motor mounted inside the housing, a propeller configured be rotated by the motor and to drive the housing along and relative to the streamer in a towing direction, and a controller configured to control the motor and the propeller.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: February 9, 2016
    Assignee: CGGVERITAS SERVICES SA
    Inventor: Zhaohong Wu
  • ACTIVE CLEANING DEVICE FOR SEISMIC STREAMERS AND RELATED METHODS
    Publication number: 20130265850
    Abstract: A cleaning device for cleaning a marine streamer towed underwater and related methods are provided. The cleaning device includes a housing configured to be attached to the streamer, a motor mounted inside the housing, a propeller configured be rotated by the motor and to drive the housing along and relative to the streamer in a towing direction, and a controller configured to control the motor and the propeller.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 10, 2013
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Zhaohong WU
  • STEERING SUBMERSIBLE FLOAT FOR SEISMIC SOURCES AND RELATED METHODS
    Publication number: 20130242694
    Abstract: Seismic sources including a steerable submersible float and related methods are provided. A seismic source includes a submersible float and a plurality of individual sources. The submersible float is configured to control at least one of a depth and a horizontal position of the submersible float by adjusting angles of one or more rotatable surfaces attached to the submersible float. The individual sources hang under the submersible float and are configured to operate at a depth larger than the depth of the submersible float.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 19, 2013
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Zhaohong WU
  • METHOD AND DEVICE FOR ALTERNATING DEPTHS MARINE SEISMIC ACQUISITION
    Publication number: 20120224453
    Abstract: System and method for enriching a bandwidth of seismic data related to a subsurface of a body of water. The system includes streamers and sources that are towed at alternating depths during consecutive and/or adjacent line of sails or during the same line of sail.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 6, 2012
    Applicant: CGGVeritas Services (US.) Inc.
    Inventor: Zhaohong WU
  • Method and apparatus for internally calibrating mixed-signal devices
    Patent number: 7796075
    Abstract: A method to tune electronic devices in general using R/2R ladder networks to obtain fixed or variable accurate properties that may include, but are not limited to resistance, current, voltage, and/or timing. As a particular application, a method for internally calibrating a digital-to-analog converter is shown in detail. The DAC uses an extended R/2R ladder to improve the converting accuracy by mapping the extended bits into the original bits. A mapping matrix is maintained, which can be rewritten by an internal calibration process.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: September 14, 2010
    Inventors: Benito R. Fernandez, Zhaohong Wu
  • METHOD AND APPARATUS FOR INTERNALLY CALIBRATING MIXED-SIGNAL DEVICES
    Publication number: 20100013685
    Abstract: A method to tune electronic devices in general using R/2R ladder networks to obtain fixed or variable accurate properties that may include, but are not limited to resistance, current, voltage, and/or timing. As a particular application, a method for internally calibrating a digital-to-analog converter is shown in detail. The DAC uses an extended R/2R ladder to improve the converting accuracy by mapping the extended bits into the original bits. A mapping matrix is maintained, which can be rewritten by an internal calibration process.
    Type: Application
    Filed: April 30, 2007
    Publication date: January 21, 2010
    Inventors: Benito R. Fernandez, Zhaohong Wu
  • Trail camera
    Patent number: D820338
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 12, 2018
    Assignee: SHENZHEN REDLEAF TECHNOLOGY CO., LTD.
    Inventor: Zhaohong Wu
  • Trail camera
    Patent number: D828427
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: September 11, 2018
    Assignee: Shenzhen Redleaf Technology Co., Ltd.
    Inventor: Zhaohong Wu