Granted Patent
Utility
US 4,351,779 · App. 06/182,170
Process for the production of methylaminomethylphosphonic acid esters
Inventor:
Ludwig Maier
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Aug 28, 1980
Inventor
Ludwig Maier
Assignee (at issue)
Ciba-Geigy
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.