Granted Patent
Utility
US 6,057,474 · App. 09/217,616
Preparation process for .alpha., .beta.-dicarbonylated compounds
Inventors:
Jean-Claude Vallejos, Nicolas Capelle, Henri Arzoumanian
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Dec 22, 1998
Inventors
Jean-Claude Vallejos
Nicolas Capelle
Henri Arzoumanian
Assignee (at issue)
Clariant S.A.
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.