IP Library › Granted Patent US 5,041,667
Granted Patent Utility
US 5,041,667 · App. 06/878,690

Process for producing chlorophenylhydrazine compounds

Inventors: Mitsuto Fujiwhara, Tamotsu Kojima
Patented Case View Patent ↗
Granted: Aug 20, 1991 Filed: Jun 26, 1986
Inventors
Mitsuto Fujiwhara
Tamotsu Kojima
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.

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 5,041,667
App. No.
06/878,690
Filed
1986-06-26
Granted
1991-08-20
Kind
A