IP Library › Granted Patent US 5,147,568
Granted Patent Utility
US 5,147,568 · App. 07/783,946

Substituted 2,3-dihydroperimidine stabilizers

Inventors: John J. Luzzi, David H. Steinberg
Patented Case View Patent ↗
Granted: Sep 15, 1992 Filed: Oct 28, 1991
Inventors
John J. Luzzi
David H. Steinberg
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 5,147,568
App. No.
07/783,946
Filed
1991-10-28
Granted
1992-09-15
Kind
A