Patents by Inventor Jim Chuang

Jim Chuang 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).

  • Publication number: 20120159894
    Abstract: A door has a wood frame core generally shaped as a planar plank having a first side and a second side. A polyurethane outer layer encapsulates the wood frame plank core, and the polyurethane outer layer has a density of preferably about 350-600 kg/m3. A plurality of concave embossments disposed on the polyurethane outer layer. An AB formula forms the polyurethane outer layer, and has a formula including a first component comprising a Polyol of at least 90% by weight, and a second component including Lupranat M20S. The wood frame core optionally includes strips of wood material disposed on the wood frame core for building up portions of the wood frame core. The fingerjoint plywood is preferably 25 mm thick and 10.7 kg and can be about 22-23 mm thickness.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Inventor: Jim Chuang