IP Library › Granted Patent US 4,765,047
Granted Patent Utility
US 4,765,047 · App. 07/023,700

Method of making a metal honeycomb catalyst support having a double taper

Inventor: William B. Retallick
Patented Case View Patent ↗
Granted: Aug 23, 1988 Filed: Mar 9, 1987
Inventor
William B. Retallick
Assignee (at issue)
W.R. Grace & Co. Conn.

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 4,765,047
App. No.
07/023,700
Filed
1987-03-09
Granted
1988-08-23
Kind
A