Patents by Inventor Wai Sun WONG

Wai Sun WONG 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: 20180345296
    Abstract: The utility model provides an air purifier. The air purifier comprises a positive ion generation module, a first airflow filter screen and a second airflow filter screen, wherein the positive ion generation module is mounted between the first airflow filter screen and the second airflow filter screen. The beneficial effects of the air purifier of the utility model are that particles as small as 0.3 microns in air can be filtered out, completely-silent operation can be achieved in a sleeping environment, three operation modes can be selected, a large purification system can be executed with the minimum size, and positive ions are generated to replace negative ions.
    Type: Application
    Filed: December 12, 2017
    Publication date: December 6, 2018
    Inventors: Wai Sun WONG, Stanley WEINBERG