Granted Patent
Utility
US 4,645,843 · App. 06/704,813
Process for the preparation of N-arylhalopyrrolid-2-ones
Inventors:
Michael D. Broadhurst, Richard D. Gless, Jr.
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Feb 25, 1985
Inventors
Michael D. Broadhurst
Richard D. Gless, Jr.
Assignee (at issue)
Stauffer Chemical Company
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.