Granted Patent
Utility
US 5,665,151 · App. 08/751,629
Method for making article with and detecting water based inks containing near infrared fluorophores
Inventors:
Nelson Zamora Escano, James J. Krutak
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Nov 18, 1996
Inventors
Nelson Zamora Escano
James J. Krutak
Assignee (at issue)
Eastman Chemical 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.