IP Library Granted Patent US 4,647,672
Granted Patent Utility
US 4,647,672 · App. 06/749,081

Ascorbate 2-polyphosphate esters and method of making same

Inventors: Paul A. Seib, Ming-Long Liao
Patented Case View Patent ↗
Granted: Mar 3, 1987 Filed: Jun 25, 1985
Inventors
Paul A. Seib
Ming-Long Liao
Assignee (at issue)
Kansas State University Research Foundation

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 4,647,672
App. No.
06/749,081
Filed
1985-06-25
Granted
1987-03-03
Kind
A