Patents by Inventor Zhengdong Lian

Zhengdong Lian 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).

  • Interpolation filter of press coffee pot
    Publication number: 20070169631
    Abstract: It is an interpolation filter for press coffee pots. It is formed as two upper and lower clips made of nontoxic plastic clamping in-between a holed sheet metal hold by a rubber ring. With the present invention, it is convenient to install and remove the filter and the filter will not slipping and scratch inner wall of the container.
    Type: Application
    Filed: April 6, 2006
    Publication date: July 26, 2007
    Inventor: Zhengdong Lian