Patents by Inventor Wenqian Han

Wenqian Han 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).

  • Weight change indicating apparatus
    Patent number: 7337580
    Abstract: An apparatus for use under an object utilizes a weighing mechanism and an adjustable indicating system for monitoring weight change. The apparatus may be particularly adapted for monitoring soil moisture level in a pot holding houseplants. The apparatus provides a guide for a caretaker to restore the adequate soil moisture level by balancing the weight change.
    Type: Grant
    Filed: November 20, 2004
    Date of Patent: March 4, 2008
    Inventors: Kehan Han, Wenqian Han, Kedu Han
  • WEIGHT CHANGE INDICATING APPARATUS
    Publication number: 20060107591
    Abstract: An apparatus for use under an object utilizes a weighing mechanism and an adjustable indicating system for monitoring weight change. The apparatus may be particularly adapted for monitoring soil moisture level in a pot holding houseplants. The apparatus provides a guide for a caretaker to restore the adequate soil moisture level by balancing the weight change. The method of using the apparatus is described.
    Type: Application
    Filed: November 20, 2004
    Publication date: May 25, 2006
    Inventors: Kehan Han, Wenqian Han, Kedu Han