Granted Patent
Utility
US 5,593,587 · App. 08/175,431
Cell strainer
Inventor:
Hato Fumihiko
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Jan 25, 1994
Inventor
Hato Fumihiko
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.