Granted Patent
Utility
US 4,944,853 · App. 07/405,784
Photochemical preparation of 3-(organothio) aldehydes
Inventor:
Stanley R. Sandler
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Sep 11, 1989
Inventor
Stanley R. Sandler
Assignee (at issue)
Pennwalt Corporation
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.