Granted Patent
Utility
US 4,849,035 · App. 07/191,964
Rare earth, iron carbon permanent magnet alloys and method for producing the same
Inventors:
Hans H. Stadelmaier, Nen-Chin Liu
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: May 9, 1988
Inventors
Hans H. Stadelmaier
Nen-Chin Liu
Assignee (at issue)
Crucible Materials 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.