Granted Patent
Utility
US 4,362,893 · App. 06/270,037
Preparation of C-nitrosodiarylamines from diarylamines
Inventor:
Paul R. Kurek
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Jun 3, 1981
Inventor
Paul R. Kurek
Assignee (at issue)
UOP LLC
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.