Granted Patent
Utility
US 5,405,578 · App. 07/846,339
Method for preparing master alloy hardeners for use in preparing an aluminum alloy
Inventors:
William C. Setzer, Richard J. Malliris, Gary W. Boone, Frank P. Koch, David K. Young
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Mar 6, 1992
Inventors
William C. Setzer
Richard J. Malliris
Gary W. Boone
Frank P. Koch
David K. Young
Assignee (at issue)
KB Alloys
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.