IP Library › Granted Patent US 4,826,599
Granted Patent Utility
US 4,826,599 · App. 07/072,056

Composite membranes and their manufacture and use

Inventors: Benjamin Bikson, Joyce K. Nelson
Patented Case View Patent ↗
Granted: May 2, 1989 Filed: Jul 10, 1987
Inventors
Benjamin Bikson
Joyce K. Nelson
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 4,826,599
App. No.
07/072,056
Filed
1987-07-10
Granted
1989-05-02
Kind
A