Granted Patent
Utility
US 5,958,780 · App. 08/885,164
Method for marking and identifying liquids
Inventors:
William E. Asher, Richard H. Clarke, Mohammad S. Farahat
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Jun 30, 1997
Inventors
William E. Asher
Richard H. Clarke
Mohammad S. Farahat
Assignee (at issue)
Boston Advanced Technologies, Inc.
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.