Granted Patent
Utility
US 4,351,962 · App. 06/168,940
Process for the preparation of hydroxy benzene carboxaldehydes
Inventors:
Peter S. Gradeff, Stanley T. Murayama
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Jul 11, 1980
Inventors
Peter S. Gradeff
Stanley T. Murayama
Assignee (at issue)
Rhone-Poulenc, Inc.
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.