IP Library › Granted Patent US 4,550,171
Granted Patent Utility
US 4,550,171 · App. 05/949,939

2-(Oxo, or thio)-3-substituted 1,3-benzothiazolyl-4-cyano-7-substituted amino-benzopyrans

Inventor: Peter Mockli
Patented Case View Patent ↗
Granted: Oct 29, 1985 Filed: Oct 10, 1978
Inventor
Peter Mockli
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 4,550,171
App. No.
05/949,939
Filed
1978-10-10
Granted
1985-10-29
Kind
A