IP Library Granted Patent US 7,858,057
Granted Patent B2
US 7,858,057 · App. 12/425,733 · Granted Dec 28, 2010

Production of lithium compounds directly from lithium containing brines

Assignee: Chemetall Foote Corporation
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
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 7,858,057
App. No.
12/425,733
Granted
Dec 28, 2010
Kind
B2
Abstract

Methods and apparatus for the production of low sodium lithium carbonate and lithium chloride from a brine concentrated to about 6.0 wt % lithium are disclosed. Methods and apparatus for direct recovery of technical grade lithium chloride from the concentrated brine are also disclosed.

Claims (2)

1. Solid lithium chloride containing less than 15 ppm sodium as an impurity.

2. Solid lithium chloride containing less than 4 ppm sodium as an impurity.

Assignments (4)
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS FILED AT R/F 025795/0627 Recorded Oct 1, 2013
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
To: CHEMETALL FOOTE CORP.
Reel/Frame 031324/0815 →
CHANGE OF NAME Recorded Apr 24, 2012
From: CHEMETALL FOOTE CORPORATION
To: ROCKWOOD LITHIUM INC.
Reel/Frame 028123/0563 →
CHANGE OF NAME Recorded Apr 23, 2012
From: CHEMETALL FOOTE CORP.
To: ROCKWOOD LITHIUM INC.
Reel/Frame 028093/0372 →
SECURITY AGREEMENT Recorded Feb 15, 2011
From: CHEMETALL FOOTE CORP.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT
Reel/Frame 025795/0627 →
Continuity (9)
Continuation 1211405400 · May 2, 2008
Continuation 1170602700 · Feb 14, 2007
Division 1133213400 · Jan 13, 2006
Division 1039598400 · Mar 25, 2003
Continuation In Part 0970742700 · Nov 7, 2000
Division 0935318500 · Jul 14, 1999
Provisional Application 6010034000 · Sep 14, 1998
Provisional Application 6009302400 · Jul 16, 1998
Related Publication 20090214414A1 · Aug 27, 2009