Patents by Inventor Chien-Sheng Wen

Chien-Sheng Wen 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).

  • Alkoxylation process for preparing ether alkanol derivatives of phenolic compounds
    Publication number: 20080228010
    Abstract: This invention provides an alkoxylation process for creating alkoxylating chain extension of phenolic compounds by reacting phenolic compounds with alkylene glycol and urea in the presence of suitable catalysts to obtain alkoxylated compounds, which may be used as polymer intermediates, especially for use as raw materials to synthesize polyurethane (PU) or polyester.
    Type: Application
    Filed: October 30, 2007
    Publication date: September 18, 2008
    Inventors: Shenghong A. Dai, Hsing-Yo Lin, Chien-Sheng Wen