Granted Patent
Utility
US 6,833,467 · App. 10/291,389
Method for preparing pentaerythritol phosphate alcohol by mechanochemical synthesis
Inventors:
Chong Ma, Wen-Yo Chen, Yuen-Hsin Peng
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Nov 12, 2002
Inventors
Chong Ma
Wen-Yo Chen
Yuen-Hsin Peng
Assignee (at issue)
CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.