Granted Patent
Utility
US 5,775,403 · App. 08/482,389
Incorporating partially sintered preforms in metal matrix composites
Inventors:
M. K. Premkumar, Ralph R. Sawtell, Frankie E. Phelps, James A. DerKacy, David I. Yun
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Jun 7, 1995
Inventors
M. K. Premkumar
Ralph R. Sawtell
Frankie E. Phelps
James A. DerKacy
David I. Yun
Assignee (at issue)
Aluminum Company of America
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.