IP Library Granted Patent US 4,221,743
Granted Patent Utility
US 4,221,743 · App. 05/703,130

Hydroformylation process

Inventors: Robert W. Halstead, John C. Chaty
Patented Case View Patent ↗
Granted: Sep 9, 1980 Filed: Jul 7, 1976
Inventors
Robert W. Halstead
John C. Chaty
Assignee (at issue)
Union Carbide Corporation

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 4,221,743
App. No.
05/703,130
Filed
1976-07-07
Granted
1980-09-09
Kind
A