Granted Patent
Utility
US 5,260,487 · App. 07/932,296
Process for the preparation of 2-hydroxyarylaldehydes
Inventor:
Daniel Levin
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Aug 19, 1992
Inventor
Daniel Levin
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES 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.