Granted Patent
Utility
US 6,548,692 · App. 10/132,022
Method for preparing 1,2-dibromo-2,4-dicyanobutane
Inventors:
Satish C. Nigam, Cletis Stiffler
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Apr 25, 2002
Inventors
Satish C. Nigam
Cletis Stiffler
Assignee (at issue)
ISP INVESTMENTS 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.