IP Library › Granted Patent US 4,139,522
Granted Patent Utility
US 4,139,522 · App. 05/885,720

Stabilized ethylene-carbon monoxide copolymers

Inventor: Peter R. Lantos
Patented Case View Patent ↗
Granted: Feb 13, 1979 Filed: Mar 13, 1978
Inventor
Peter R. Lantos
Assignee (at issue)
Arco Polymers, 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 4,139,522
App. No.
05/885,720
Filed
1978-03-13
Granted
1979-02-13
Kind
A