Granted Patent
Utility
US 6,322,703 · App. 09/496,590
Method for purifying aqueous suspension
Inventors:
Tohru Taniguchi, Nobuhiko Suga, Takehiko Otoyo
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Feb 2, 2000
Inventors
Tohru Taniguchi
Nobuhiko Suga
Takehiko Otoyo
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.