IP Library › Granted Patent US 4,902,816
Granted Patent Utility
US 4,902,816 · App. 07/173,788

Polyols from phthalic compounds

Inventor: Kenneth G. McDaniel
Patented Case View Patent ↗
Granted: Feb 20, 1990 Filed: Mar 28, 1988
Inventor
Kenneth G. McDaniel
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 4,902,816
App. No.
07/173,788
Filed
1988-03-28
Granted
1990-02-20
Kind
A