IP Library Granted Patent US 5,597,686
Granted Patent Utility
US 5,597,686 · App. 08/429,989

Photographic silver halide emulsion containing contrast improving dopants

Inventors: Gladys L. MacIntyre, Eric L. Bell
Patented Case View Patent ↗
Granted: Jan 28, 1997 Filed: Apr 27, 1995
Inventors
Gladys L. MacIntyre
Eric L. Bell
Assignee (at issue)
EASTMAN KODAK 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.

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 5,597,686
App. No.
08/429,989
Filed
1995-04-27
Granted
1997-01-28
Kind
A