Patents by Inventor Yingfa Li

Yingfa 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).

  • Dimethylsiloxane-alkylene oxide copolymers
    Patent number: 11642304
    Abstract: Copolymers are formed of monomers of poly(dimethylsiloxane) and poly(alkylene oxide) of the following formula: Ax-XCH2CH2—[ByCz]n—X-Ax. In the formula, each X independently represents a —CH2— group or an oxygen atom, A represents a polydimethylsiloxane derivative, B represents a polyethylene glycol unit, C represents a polypropylene glycol unit, x and n independently represent an integer from 1 to 150, and y and z independently represent an integer from 0 to 150. The copolymers can be used as emulsifiers in personal care compositions.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: May 9, 2023
    Assignee: CORNELIUS GROUP PLC
    Inventors: Thomas Guy Alabaster, Hannah Ruth Beasley-Suffolk, John Mark Bilney, Ella-Louise Ceraulo, John Ing Chuan Daly, Ian Stuart Pearce, Elizabeth Joan Smith, Robert Liam Smith, Christos Angeletakis, Yingfa Li
  • Portable therapy lamp
    Patent number: D875265
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 11, 2020
    Inventor: Yingfa Li
  • Plant cultivation lamp
    Patent number: D879349
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: March 24, 2020
    Inventor: Yingfa Li
  • Desktop therapy lamp
    Patent number: D911539
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: February 23, 2021
    Inventor: Yingfa Li
  • Portable therapy lamp
    Patent number: D911540
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: February 23, 2021
    Inventor: Yingfa Li
  • Nail polish organizer case
    Patent number: D993619
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: August 1, 2023
    Inventor: Yingfa Li