Patents by Inventor Lidan Ma

Lidan Ma 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: 10401570
    Abstract: A wavelength selective switch includes an attenuation liquid crystal cell array and a switching liquid crystal cell array, the attenuation liquid crystal cell array is configured to select a region where a light is incident on the switching liquid crystal cell array; the switching liquid crystal cell array includes a first ECB liquid crystal cell array, which is divided into a plurality of pixel units, a phase of each pixel unit is adjusted by setting different voltages so that a phase pattern formed by the pixel units exhibits a lens property, and the light passing through the switching liquid crystal cell array is deflected by changing a center of the lens formed by the phase pattern, so as to select an outgoing port.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 3, 2019
    Assignee: Accelink Technologies Co., Ltd.
    Inventors: Liu Yang, Rui Yang, Zhilin Yuan, Lidan Song, Jinping Guo, Fan Wang, Yuhong Ma, Lihong Tang
  • Patent number: D567852
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: April 29, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Lidan Ma
  • Pen
    Patent number: D570414
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: June 3, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Lidan Ma
  • Patent number: D572306
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 1, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Lidan Ma
  • Patent number: D572307
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 1, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Lidan Ma
  • Patent number: D573639
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 22, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Lidan Ma
  • Pen
    Patent number: D575340
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: August 19, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventor: Lidan Ma
  • Patent number: D590877
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 21, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Lidan Ma