Granted Patent
Utility
US 5,280,125 · App. 07/803,315
Chemical process for the preparation of 3-alkylated indole
Inventors:
Robert T. Jacobs, Gerard F. Costello, Stephen A. Brook, Peter John Harrison, deceased
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: Dec 4, 1991
Inventors
Robert T. Jacobs
Gerard F. Costello
Stephen A. Brook
Peter John Harrison, deceased
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.