Patents by Inventor Shyh Haw Liao

Shyh Haw Liao 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).

  • Azaoxa heterocyclic compound and method of preparing the same
    Patent number: 7202359
    Abstract: Disclosed is an azaoxa heterocyclic compound represented by the following formula (I): (wherein, each symbol is defined the same as in the specification) and a method for preparing the same. This compound of the present invention is prepared by the reaction of a phenolic compound, an aromatic diamine compound and an aldehyde compound. The azaoxa heterocyclic compound of the present invention can be used as a hardening resin or a hardener for an epoxy resin, polyether and a resin containing active hydrogen atoms, wherein the composition formed by the azaoxa heterocyclic compound and the epoxy resin is useful in the application of laminates, adhesive, semiconductor packaging materials and phenolic resin forming materials.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: April 10, 2007
    Assignee: Chang Chun Plastics Co., Ltd.
    Inventors: Kuen-Yuan Hwang, An-Pang Tu, Shyh Haw Liao
  • Azaoxa heterocyclic compound and method of preparing the same
    Publication number: 20040068084
    Abstract: Disclosed is an azaoxa heterocyclic compound represented by the following formula (I): 1
    Type: Application
    Filed: July 29, 2003
    Publication date: April 8, 2004
    Inventors: Kuen-Yuan Hwang, An-Pang Tu, Shyh Haw Liao