Granted Patent
Utility
US 4,411,876 · App. 06/454,395
Process for the manufacture of trimagnesium phosphate octahydrate of high purity
Inventor:
Fawzy G. Sherif
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Dec 30, 1982
Inventor
Fawzy G. Sherif
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.