IP Library › Granted Patent US 6,077,978
Granted Patent Utility
US 6,077,978 · App. 08/932,613

Direct polyoxyalkylation of glycerine with double metal cyanide catalysis

Inventors: Kenneth G. McDaniel, Mark J. Perry, John E. Hayes
Patented Case View Patent ↗
Granted: Jun 20, 2000 Filed: Sep 17, 1997
Inventors
Kenneth G. McDaniel
Mark J. Perry
John E. Hayes
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 6,077,978
App. No.
08/932,613
Filed
1997-09-17
Granted
2000-06-20
Kind
A