Granted Patent
Utility
US 5,665,233 · App. 08/531,700
Filter apparatus for selectively removing leukocytes
Inventors:
Tatsuya Fukuda, Takao Nishimura, Naokuni Yamawaki
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Sep 21, 1995
Inventors
Tatsuya Fukuda
Takao Nishimura
Naokuni Yamawaki
Assignee (at issue)
ASAHI MEDICAL CO., 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.