Patents by Inventor Yangmin LI

Yangmin 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).

  • Combined filter unit and water treatment apparatus having same
    Patent number: 11851351
    Abstract: A combined filter unit and a water treatment apparatus having the same. The combined filter unit comprises a housing, a first filter assembly, an internal tube, and a second filter assembly. The first filter assembly is provided in the housing, and defines a filter material installation cavity therein. The internal tube is provided in the filter material installation cavity. The second filter assembly is provided in the internal tube.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: December 26, 2023
    Inventor: Yangmin Li
  • COMBINED FILTER UNIT AND WATER TREATMENT APPARATUS HAVING SAME
    Publication number: 20210395114
    Abstract: A combined filter unit and a water treatment apparatus having the same. The combined filter unit comprises a housing, a first filter assembly, an internal tube, and a second filter assembly. The first filter assembly is provided in the housing, and defines a filter material installation cavity therein. The internal tube is provided in the filter material installation cavity. The second filter assembly is provided in the internal tube.
    Type: Application
    Filed: October 31, 2019
    Publication date: December 23, 2021
    Inventor: Yangmin LI