Granted Patent
Utility
US 6,355,158 · App. 09/479,739
Method of measuring pH
Inventors:
John Benco, Jan S. Krouwer
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Jan 7, 2000
Inventors
John Benco
Jan S. Krouwer
Assignee (at issue)
Bayer Aktiengesellschaft
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.