Granted Patent
Utility
US 4,263,232 · App. 06/055,580
Process for the manufacture of selected phosphonates
Inventor:
Mansukh G. Parekh
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Jul 9, 1979
Inventor
Mansukh G. Parekh
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.