Patents by Inventor Yunqing Shen

Yunqing Shen 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: 6687659
    Abstract: A hybrid approach is disclosed for implementing highly efficient absorbing boundary conditions in three dimensional (3D) finite difference (FD) acoustic applications such as post-stack and pre-stack seismic migration, and forward modeling. The “Perfectly matched layer” (PML) absorbing medium is able to absorb waves arriving at all incidence angle and at any frequency. An optimized PML medium is disclosed including its formulation and implementation to reduce its memory usage and associated computational cost. To avoid costly and cumbersomely implementation of PML medium at the edges and corners of truncated 3D numerical models the PML medium is combined with a “One-way Wave Equation” (1WWE) absorbing boundary to eliminate reflections and diffraction from the edges and corners.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: February 3, 2004
    Assignee: ConocoPhillips Company
    Inventor: Yunqing Shen