Granted Patent
Utility
US 5,049,530 · App. 07/596,256
Power mixture and green body for producing silicon nitride base & articles of high fracture toughness and strength
Inventors:
Marvin L. Huckabee, Sergej-Tomislav Buljan, Jeffrey T. Neil
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Oct 12, 1990
Inventors
Marvin L. Huckabee
Sergej-Tomislav Buljan
Jeffrey T. Neil
Assignee (at issue)
GTE Laboratories Incorporated
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.