IP Library › Granted Patent US 4,978,756
Granted Patent Utility
US 4,978,756 · App. 07/301,785

Compound and use

Inventor: John Rutledge Lawson
Patented Case View Patent ↗
Granted: Dec 18, 1990 Filed: Jan 25, 1989
Inventor
John Rutledge Lawson
Assignee (at issue)
ICI Americas, 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 4,978,756
App. No.
07/301,785
Filed
1989-01-25
Granted
1990-12-18
Kind
A