IP Library › Granted Patent US 5,250,581
Granted Patent Utility
US 5,250,581 · App. 07/588,648

Polymer polyols containing halogenated aromatic monomers

Inventors: Robert G. Gastinger, John E. Hayes, Philippe C. Motte
Patented Case View Patent ↗
Granted: Oct 5, 1993 Filed: Sep 26, 1990
Inventors
Robert G. Gastinger
John E. Hayes
Philippe C. Motte
Assignee (at issue)
Arco Chemical Technology, L.P.

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 5,250,581
App. No.
07/588,648
Filed
1990-09-26
Granted
1993-10-05
Kind
A