Granted Patent
Utility
US 5,415,784 · App. 08/054,845
Sample separator having impedance interface detector
Inventors:
Masaki Akutsu, Nobukazu Takahashi
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Apr 29, 1993
Inventors
Masaki Akutsu
Nobukazu Takahashi
Assignee (at issue)
Olympus Optical 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.