Patents by Inventor Yongqin Chen

Yongqin Chen 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: 20250137906
    Abstract: A detection system and a sample processing instrument for nanoparticles are provided. The detection system includes a light emitting unit and a light collection unit. The light emitting unit is configured to emit a light beam and project the light beam onto a nanoparticle to be detected. The light collection unit is configured to collect light beams from the nanoparticle so as to analyze the nanoparticles according to the collected light beams. The light emitting unit includes multiple light sources and a focusing lens, and the light beams emitted by the multiple light sources are focused through the focusing lens on a same detection position through which the nanoparticle is to pass.
    Type: Application
    Filed: June 17, 2022
    Publication date: May 1, 2025
    Applicants: Beckman Coulter, Inc., Beckman Coulter Biotechnology (Suzhou) Co., Ltd.
    Inventors: Liang SHI, Wenlei FANG, Linqun TANG, Jianfei ZHENG, Jingzhang WU, Qi GU, Juntao YUAN, Evgenia KIM, Yongqin CHEN, George BRITTAIN
  • Patent number: 6888863
    Abstract: An improved optical communication system is provided, the system particularly suited for so-called short-haul applications, e.g., applications involving transmission over distances less than 100 km, such as metro applications. The system uses an external cavity laser made up of a gain medium that comprises an active region, a beam expanding region, and an antireflective layer, an optical waveguide located adjacent the gain medium, and a Bragg grating integral with or coupled to the optical waveguide. The medium and the optical waveguide, due to the beam expanding region, exhibit a coupling efficiency of at least 40%, advantageously at least 50%, even in the absence of coupling optics, and the laser is configured and operated to emit at least two modes.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: May 3, 2005
    Assignee: Lucent Technologies Inc.
    Inventors: Yongqin Chen, William Larry Wilson
  • Publication number: 20040156416
    Abstract: An improved optical communication system is provided, the system particularly suited for so-called short-haul applications, e.g., applications involving transmission over distances less than 100 km, such as metro applications. The system uses an external cavity laser made up of a gain medium that comprises an active region, a beam expanding region, and an antireflective layer, an optical waveguide located adjacent the gain medium, and a Bragg grating integral with or coupled to the optical waveguide. The medium and the optical waveguide, due to the beam expanding region, exhibit a coupling efficiency of at least 40%, advantageously at least 50%, even in the absence of coupling optics, and the laser is configured and operated to emit at least two modes.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Yongqin Chen, William Larry Wilson