IP Library › Granted Patent US 7,547,426
Granted Patent B2
US 7,547,426 · App. 12/114,054 · Granted Jun 16, 2009

Production of lithium compounds directly from lithium containing brines

Assignee: Chemetall Foote Corporation
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Quick Facts
Patent No.
US 7,547,426
App. No.
12/114,054
Granted
Jun 16, 2009
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 (1)

1. Solid lithium chloride containing less than 8 ppm sodium.

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 (8)
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 0610034000 · Sep 14, 1998
Provisional Application 6009302400 · Jul 16, 1998
Related Publication 20080233042A1 · Sep 25, 2008