Granted Patent
Utility
US 6,664,409 · App. 10/429,777
Method for the preparation of ferroceny1-1,3-butadiene
Inventor:
Shean-Jeng Jong
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: May 6, 2003
Inventor
Shean-Jeng Jong
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.