IP Library › Granted Patent US 5,945,472
Granted Patent Utility
US 5,945,472 · App. 09/024,050

Highly-filled chlorine-free surface covering

Inventors: Chau Duong, Harry D. Ward, Lowell E. West
Patented Case View Patent ↗
Granted: Aug 31, 1999 Filed: Feb 16, 1998
Inventors
Chau Duong
Harry D. Ward
Lowell E. West
Assignee (at issue)
ARMSTRONG WORLD INDUSTRIES, 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 5,945,472
App. No.
09/024,050
Filed
1998-02-16
Granted
1999-08-31
Kind
A