Granted Patent
Utility
US 4,400,330 · App. 06/403,239
Method for preparation of N-phosphonomethylglycine
Inventors:
Rayman Y. Wong, Nathan S. Bunker
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Jul 29, 1982
Inventors
Rayman Y. Wong
Nathan S. Bunker
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.