Granted Patent
Utility
US 4,298,409 · App. 06/133,774
Method for making iron-metalloid amorphous alloys for electromagnetic devices
Inventors:
Nicholas J. DeCristofaro, Alfred Freilich, Davidson M. Nathasingh
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Mar 25, 1980
Inventors
Nicholas J. DeCristofaro
Alfred Freilich
Davidson M. Nathasingh
Assignee (at issue)
Allied Chemical Corporation
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.