Granted Patent
Utility
US 5,268,334 · App. 07/797,532
Production of beryllium oxide powders with controlled morphology and quality
Inventors:
Mark N. Emly, Donald J. Kaczynski
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Nov 25, 1991
Inventors
Mark N. Emly
Donald J. Kaczynski
Assignee (at issue)
BRUSH WELLMAN, INC.
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.