IP Library › Granted Patent US 4,870,204
Granted Patent Utility
US 4,870,204 · App. 07/098,328

Method for preparing citrate esters

Inventors: Ezekiel H. Hull, Edward P. Frappier
Patented Case View Patent ↗
Granted: Sep 26, 1989 Filed: Sep 17, 1987
Inventors
Ezekiel H. Hull
Edward P. Frappier
Assignee (at issue)
Morflex Chemical Company, 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 4,870,204
App. No.
07/098,328
Filed
1987-09-17
Granted
1989-09-26
Kind
A