IP Library › Granted Patent US 4,657,950
Granted Patent Utility
US 4,657,950 · App. 06/660,169

Refractory binders

Inventors: Raja Iyer, Rasik C. Shah, Robert A. Laitar
Patented Case View Patent ↗
Granted: Apr 14, 1987 Filed: Oct 12, 1984
Inventors
Raja Iyer
Rasik C. Shah
Robert A. Laitar
Assignee (at issue)
Acme Resin Corp.

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 4,657,950
App. No.
06/660,169
Filed
1984-10-12
Granted
1987-04-14
Kind
A