Granted Patent
Utility
US 6,045,424 · App. 09/114,425
Spark plug tip having platinum based alloys
Inventors:
Chin-Fong Chang, Richard Dale Taylor, Lee Randall Franz, Edgar Arnold Leone
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Jul 13, 1998
Inventors
Chin-Fong Chang
Richard Dale Taylor
Lee Randall Franz
Edgar Arnold Leone
Assignee (at issue)
AlliedSignal, 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.