Patents by Inventor Yiwen Chew

Yiwen Chew 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).

  • Water soluble tape
    Publication number: 20070232497
    Abstract: The present invention provides a water soluble tape for controlled release of at least one active ingredient, a water soluble adhesive tape for controlled release of at least one active ingredient, a method for manufacturing a water soluble tape for controlled release of at least one active ingredient, and a method for utilizing the condensate water for cleansing and disinfection purposes.
    Type: Application
    Filed: April 4, 2006
    Publication date: October 4, 2007
    Inventors: Yiwen Chew, Yi Chew
  • Sustained release tablets for treatment of aqueous environment and methods for making the same
    Publication number: 20060165745
    Abstract: The present invention provides tablets for treatment of aqueous environment that release at least one active ingredient in a sustained manner so as to provide the treated aqueous environment with the at least one active ingredient for a long period with a single dose. The present invention also provides methods for making the sustained release tablets.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 27, 2006
    Inventors: Yiwen Chew, Yi Chew