Granted Patent
Utility
US 5,190,872 · App. 07/573,066
Immobilized alcohol utidase for use in an alcohol measuring apparatus
Inventors:
Yoshio Hashizume, Akio Kariyone, Ryuzo Hayashi, Minako Oka
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Aug 27, 1990
Inventors
Yoshio Hashizume
Akio Kariyone
Ryuzo Hayashi
Minako Oka
Assignee (at issue)
Kanzaki Paper Manufacturing 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.