Granted Patent
Utility
US 5,808,130 · App. 08/714,279
Esterification of phenols
Inventor:
Leroy O. Krbechek
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Sep 17, 1996
Inventor
Leroy O. Krbechek
Assignee (at issue)
Henkel Limited
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.