Granted Patent
Utility
US 6,414,197 · App. 09/078,253
Preparation of phenol and its derivatives
Inventors:
Leonid Modestovich Kustov, Viktor Ignatyevich Bogdan, Vladimir Borisovich Kazansky
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: May 13, 1998
Inventors
Leonid Modestovich Kustov
Viktor Ignatyevich Bogdan
Vladimir Borisovich Kazansky
Assignee (at issue)
General Electric 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.