Granted Patent
Utility
US 6,486,573 · App. 09/827,125
Portable X-ray fluorescence analyzer
Inventors:
Shigeki Yagi, Koichi Tamura
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Apr 5, 2001
Inventors
Shigeki Yagi
Koichi Tamura
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.