Granted Patent
Utility
US 6,211,406 · App. 09/421,727
Process for the manufacture of .alpha., .alpha.-branched carboxylic acids
Inventors:
Jean-Paul Lange, Vincent Otten, Hans A. Stil
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Oct 20, 1999
Inventors
Jean-Paul Lange
Vincent Otten
Hans A. Stil
Assignee (at issue)
SHELL OIL COMPANY
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.