Granted Patent
Utility
US 6,010,546 · App. 08/971,689
Blasting medium and blasting method employing such medium
Inventors:
Hachiro Hirano, Teiji Kawada, Shintaro Kikuchi, Hidetomi Haga
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Nov 17, 1997
Inventors
Hachiro Hirano
Teiji Kawada
Shintaro Kikuchi
Hidetomi Haga
Assignee (at issue)
ASAHI GLASS CO., 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.