Granted Patent
Utility
US 6,358,336 · App. 09/651,113
Heat resistance Cr-Mo alloy steel
Inventor:
Kaori Miyata
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Aug 30, 2000
Inventor
Kaori Miyata
Assignee (at issue)
SUMITOMO METAL INDUSTRIES, LTD.
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.