Granted Patent
Utility
US 6,737,526 · App. 10/303,784
Method for preparing melamine salt of bis-(pentaerythritol phosphate) phosphoric acid
Inventors:
Chong Ma, Tseng-Rong Wu, Yuen-Hsin Peng
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Nov 26, 2002
Inventors
Chong Ma
Tseng-Rong Wu
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.