Granted Patent
Utility
US 4,337,183 · App. 06/248,160
Polyurethane and polyethylene resin-containing printing ink having improved physical and mechanical properties
Inventor:
Edgardo Santiago
Patented Case
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Granted: Jun 29, 1982
Filed: Mar 30, 1981
Inventor
Edgardo Santiago
Assignee (at issue)
Owens-Illinois 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.