Patents by Inventor Siew Puat Yeo

Siew Puat Yeo 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).

  • Adhesive compositions and composite materials
    Patent number: 6537934
    Abstract: A composite material is formed from a flexible porous hardening foam (e.g. polyurethane) and an adhesive composition which sets to a water-resistant film and contains a water-absorbent filler (e.g. fumed silica) in an amount such that the film is water absorbent. The adhesive reinforces the foam while preserving its porosity and absorbency. The material is suitable for shoe insoles and handgrips. The adhesive may be primarily in a surface layer e.g. of cloth (14) applied to the foam (12); or the foam (22) may be saturated with the composition prior to curing.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: March 25, 2003
    Inventor: Siew Puat Yeo
  • Two-component polymer composition
    Patent number: 5880183
    Abstract: A composition of a hydroxyl functional polymer, an acetate functional polymer and a carboxyl functional polymer, which are crosslinked by a polyfunctional aziridine. Preferably, PVOH, polyvinylacetate and a carboxylated styrene/butadiene are used as the polymers. The aziridine can be held separate from the polymers prior to crosslinking. The composition is useful as a wood adhesive or coating composition.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: March 9, 1999
    Inventor: Siew Puat Yeo