IP Library › Granted Patent US 6,007,618
Granted Patent Utility
US 6,007,618 · App. 08/967,070

Kaolin clays which are conditioned prior to removing impurities

Inventors: Joseph Allen Norris, Jorge L. Yordan
Patented Case View Patent ↗
Granted: Dec 28, 1999 Filed: Nov 10, 1997
Inventors
Joseph Allen Norris
Jorge L. Yordan
Assignee (at issue)
Thiele Kaolin Company

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 6,007,618
App. No.
08/967,070
Filed
1997-11-10
Granted
1999-12-28
Kind
A