Granted Patent
Utility
US 4,491,548 · App. 06/489,627
Process for preparing phosphonomethylated amino acids
Inventor:
Sreeramulu Nagubandi
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Apr 28, 1983
Inventor
Sreeramulu Nagubandi
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.