IP Library Granted Patent US 5,885,422
Granted Patent Utility
US 5,885,422 · App. 08/807,873

Spent caustic (pre)treatment process

Inventors: Sabah A. Kurukchi, Joseph M. Gondolfe
Patented Case View Patent ↗
Granted: Mar 23, 1999 Filed: Feb 26, 1997
Inventors
Sabah A. Kurukchi
Joseph M. Gondolfe
Assignee (at issue)
Stone & Webster Engineering 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 5,885,422
App. No.
08/807,873
Filed
1997-02-26
Granted
1999-03-23
Kind
A