Granted Patent
Utility
US 6,048,464 · App. 08/894,320
Filter medium for leukocyte removal, method of making, and method of using thereof
Inventors:
Jun Tanaka, Tatsuya Fukuda, Kumi Yoshida
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Aug 14, 1997
Inventors
Jun Tanaka
Tatsuya Fukuda
Kumi Yoshida
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.