Granted Patent
Utility
US 6,563,902 · App. 09/893,715
Energy dispersive X-ray analyzer
Inventor:
Haruo Takahashi
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 28, 2001
Inventor
Haruo Takahashi
Assignee (at issue)
SEIKO INSTRUMENTS 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.