Patents by Inventor Yizhi Li

Yizhi Li 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: 8679445
    Abstract: This invention discloses a solid-based synthesis of cesium tin tri-iodide (CsSnI3). More specifically, the CsSnI3 is fabricated in a 3 zone high temperature resisting tube by the solid-phase sintering method. CsSnI3 are ideally suited for a wide range of applications such as light emitting and photovoltaic devices.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: March 25, 2014
    Assignee: Sun Harmonics Ltd.
    Inventors: Yuhang Ren, Jin Zhang, Yizhi Li, Kai Shum
  • Patent number: 6182041
    Abstract: Text-to-speech based reminder system. One or more servers within a communication network include hardware and software which allows the system to direct the collection of data about reminder, the translation of the reminder from text-to-speech, and the forwarding of the reminder to a recipient via an appropriate delivery method. The invention makes use of delivery methods such as e-mail, voicemail, or an existing telephone connection to communicate the speech reminder to a recipient. The recipient need not view a display screen to understand the content of the reminder, and needs no locally installed reminder software.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: January 30, 2001
    Assignee: Nortel Networks Limited
    Inventors: Yizhi Li, Alexander S. Ng, Trung Trinh, Ross McNamara
  • Patent number: D966739
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: October 18, 2022
    Inventor: Yizhi Li
  • Patent number: D990916
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: July 4, 2023
    Inventor: Yizhi Li