IP Library › Granted Patent US 5,221,734
Granted Patent Utility
US 5,221,734 · App. 07/852,834

Process for preparing a polypeptide growth factor for milk

Inventors: Robert Roland Burk, David Maurice Cox
Patented Case View Patent ↗
Granted: Jun 22, 1993 Filed: Mar 16, 1992
Inventors
Robert Roland Burk
David Maurice Cox
Assignee (at issue)
Ciba-Geigy

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 5,221,734
App. No.
07/852,834
Filed
1992-03-16
Granted
1993-06-22
Kind
A