IP Library Granted Patent US 4,614,621
Granted Patent Utility
US 4,614,621 · App. 06/602,300

Ethynylation of 16-methylene-17-keto steroids

Inventor: Verlan H. VanRheenen
Patented Case View Patent ↗
Granted: Sep 30, 1986 Filed: Apr 20, 1984
Inventor
Verlan H. VanRheenen
Assignee (at issue)
The Upjohn Co.

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 4,614,621
App. No.
06/602,300
Filed
1984-04-20
Granted
1986-09-30
Kind
A