Patents by Inventor Chio C. Chu

Chio C. Chu 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).

  • Process for preparing carbonate compounds
    Patent number: 5591883
    Abstract: A process for preparing carbonate compounds having the following formula: ##STR1## wherein R and R' are, the same or different, C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.6 cycloalkyl group, an optionally substituted C.sub.6 -C.sub.14 aryl group, an alkylaryl group, or an arylalkyl group is proposed; the process comprises reacting urea or derivatives thereof with appropriate alcohols or phenols and preparing the carbonate compounds via a multiple-step synthesis process.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: January 7, 1997
    Assignee: Chang Chun Plastics Co. Ltd.
    Inventors: Kuen-Yuan Hwang, Yu Z. Chen, Chio C. Chu, Hsiao T. Liao