Patents by Inventor Kuan Hsiu Hwu

Kuan Hsiu Hwu 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).

  • Starch graft copolymer, detergent builder composition including the same, and production method thereof
    Publication number: 20030008804
    Abstract: A graft copolymer of acrylic acid and maleic acid (or anhydride) grafted onto starch, a detergent builder composition containing the graft copolymer and a method of preparing the graft copolymer. These novel starch graft copolymers are highly water-soluble and biodegradable, have strong chelation ability to calcium ions and magnesium ions, and strong pH buffering ability. The composition has no phosphate and aluminosilicate. The composition has excellent anti-redeposition, building, anti-filming, dispersing, threshold crystal-inhibiting and enzyme performance-improving properties.
    Type: Application
    Filed: May 13, 2002
    Publication date: January 9, 2003
    Inventors: Qiu Xu, Tzu Chun Lin, Fenbao Zhang, Kuan Hsiu Hwu