Granted Patent
Utility
US 6,770,877 · App. 10/457,426
Method and apparatus for analyzing vapors generated from explosives
Inventors:
Toshihiko Ohta, Kenji Kusumoto, Yasuaki Takada, Hisashi Nagano
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Jun 10, 2003
Inventors
Toshihiko Ohta
Kenji Kusumoto
Yasuaki Takada
Hisashi Nagano
Assignee (at issue)
HITACHI, 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.