Granted Patent
Utility
US 5,877,355 · App. 08/912,009
2-hydroxy-5-alkyl-beta-methylstyrene and process of preparing hydroxyarylaldehydes therefrom
Inventor:
Leroy O. Krbechek
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Aug 15, 1997
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.