IP Library › Granted Patent US 4,664,845
Granted Patent Utility
US 4,664,845 · App. 06/817,324

Phenylenediamine solubilizer for dinitrophenol in aromatic solvent

Inventors: Elmar H. Jancis, Paul E. Stott
Patented Case View Patent ↗
Granted: May 12, 1987 Filed: Jan 19, 1986
Inventors
Elmar H. Jancis
Paul E. Stott
Assignee (at issue)
Uniroyal Chemical Company, 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,664,845
App. No.
06/817,324
Filed
1986-01-19
Granted
1987-05-12
Kind
A