Granted Patent
Utility
US 6,464,877 · App. 09/582,033
Water treating method
Inventors:
Yoshihiko Mori, Yasujiro Fujii
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Jun 21, 2000
Inventors
Yoshihiko Mori
Yasujiro Fujii
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.