Patents by Inventor Yaw-Tsan Chen

Yaw-Tsan Chen 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).

  • Sandbag
    Publication number: 20080101734
    Abstract: A sandbag has a bag, multiple adhesives and at least two filler layers. The bag is made of a water-permeable material and has an inner surface. The adhesives are mounted in the bag. The filler layers have water-absorbing polymers nebulized by a low pressure and sprayed on the adhesives evenly. The filler layers adhesive on the adhesives, so the filler layers will not move and can expand evenly.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Inventors: Yaw-Tsan Chen, Wu-Pen Chen