Granted Patent
Utility
US 6,774,267 · App. 09/778,353
Phenolic compounds derived from dialkoxyethanals, their preparation process and their application
Inventors:
Didier Wilhelm, Florence Esmard
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Feb 7, 2001
Inventors
Didier Wilhelm
Florence Esmard
Assignee (at issue)
Clariant (France)
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.