IP Library › Granted Patent US 5,354,480
Granted Patent Utility
US 5,354,480 · App. 07/837,742

Improved method of dewatering sludge

Inventors: Peter M. Robinson, Nguyen Van-Det
Patented Case View Patent ↗
Granted: Oct 11, 1994 Filed: Feb 18, 1992
Inventors
Peter M. Robinson
Nguyen Van-Det
Assignee (at issue)
Exxon Chemical Patents, Inc.

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 5,354,480
App. No.
07/837,742
Filed
1992-02-18
Granted
1994-10-11
Kind
A