Patents by Inventor Hao Thu Ngu

Hao Thu Ngu 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).

  • Adjustable umbrella base
    Patent number: 9644385
    Abstract: An umbrella stand may include a receptacle for receiving a portion of a mast of an umbrella and a base portion configured to interface with a ground surface. A movable joint is disposed between the receptacle and the base portion. A frictional force present between components of the movable joint is great enough to maintain a position of the receptacle relative to the base portion under the weight of the umbrella and mast, and is small enough that the receptacle can be repositioned relative to the base portion by application of a manual force to the mast of the umbrella. The movable joint may be lockable into different positions.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: May 9, 2017
    Inventor: Hao Thu Ngu
  • ADJUSTABLE UMBRELLA BASE
    Publication number: 20160208509
    Abstract: An umbrella stand may include a receptacle for receiving a portion of a mast of an umbrella and a base portion configured to interface with a ground surface. A movable joint is disposed between the receptacle and the base portion. A frictional force present between components of the movable joint is great enough to maintain a position of the receptacle relative to the base portion under the weight of the umbrella and mast, and is small enough that the receptacle can be repositioned relative to the base portion by application of a manual force to the mast of the umbrella. The movable joint may be lockable into different positions.
    Type: Application
    Filed: February 8, 2016
    Publication date: July 21, 2016
    Inventor: Hao Thu Ngu