Class C01D : COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
Subclass 1/30: Oxides or hydroxides of sodium, potassium, or alkali metals in general Hydroxides Purification; Separation by crystallisation
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258279 | Method for recovering lithium precursor from waste lithium secondary battery positive electrode material | Nov 30, 21 | Mar 25, 25 | SK INNOVATION CO., LTD. |
| 9932241 | Method for quickly extracting lithium carbonate from saline lake water | Jun 30, 17 | Apr 03, 18 | Tibet Jin Hao Investment Co., Ltd.; Binyuan Zhu; |
| 9718697 | Systems and methods for sustainable regeneration of caustic solutions | Jun 25, 15 | Aug 01, 17 | IGEN TECHNOLOGIES, LLC |
| 9714175 | System for extracting lithium carbonate from saline lake water | Jun 18, 14 | Jul 25, 17 | Binyuan Zhu, Tibet Jin Hao Investment Co., Ltd., |
| 9259663 | Process for the preparation of natural salt formulations for seawater substitution, mineral fortification | Dec 27, 12 | Feb 16, 16 | COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
| 9181102 | Method for producing crystallized salt and bittern with a system through the evaporation process | Sep 24, 13 | Nov 10, 15 | Pioli Systems Inc. |
| 8888867 | Sodium chloride production process | Oct 29, 09 | Nov 18, 14 | AKZO NOBEL CHEMICALS INTERNATIONAL B.V. |
| 8603192 | Selective salt recovery from mixed salt brine | Feb 22, 11 | Dec 10, 13 | VEOLIA WATER TECHNOLOGIES, INC. |
| 8357211 | ADR salt pill design and crystal growth process for hydrated magnetic salts | Aug 31, 10 | Jan 22, 13 | UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
| 8282690 | Process for the preparation of solar salt having high purity and whiteness | Dec 09, 05 | Oct 09, 12 | COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
| 8226735 | Subterranean well production saltwater evaporation station | Jun 02, 09 | Jul 24, 12 | Hudgens Holdings, LLC |
| 7892298 | Method for producing high purity caustic potash | Aug 08, 06 | Feb 22, 11 | TOAGOSEI CO., LTD. |
| 7303593 | Method to blend separator powders | Sep 16, 02 | Dec 04, 07 | NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC |
| 6022385 | Process for the manufacture of sodium carbonate crystals from minerals or solutions | Apr 29, 96 | Feb 08, 00 | Not available |
| 5478515 | Salt block release agents | Apr 29, 93 | Dec 26, 95 | MORTON SALT, INC. |
| 5366514 | Salt plant evaporation | Dec 30, 92 | Nov 22, 94 | TEXAS BRINE CORPORATION |
| 5296000 | Process and equipment for crystallizing an inorganic substance | Dec 17, 92 | Mar 22, 94 | ESCO-EUROPEAN SALT COMPANY GMBH & CO. KG |
| 5215730 | Production of sodium perborate crystals having improved abrasion resistance | Oct 29, 91 | Jun 01, 93 | E. I. DU PONT DE NEMOURS AND COMPANY |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0083,969 | PROCESS TO PRODUCE BATTERY GRADE LITHIUM HYDROXIDE MONOHYDRATE WITH LOW CONTENT OF CARBONATE | Sep 09, 24 | Mar 13, 25 | Not available |
| 2025/0026,655 | Purification of Concentrated Aqueous Hydroxide Solutions for Electrolysis | Jan 11, 24 | Jan 23, 25 | Air Products and Chemicals, Inc. |
| 2024/0174,527 | SYSTEM FOR THE PRODUCTION OF LITHIUM HYDROXIDE (LIOH) DIRECTLY FROM LITHIUM CHLORIDE (LICI), WITHOUT THE NEED FOR THE INTERMEDIATE PRODUCTION OF LITHIUM CARBONATE OR THE LIKE | Mar 20, 21 | May 30, 24 | SOCIEDAD QUIMICA Y MINERA DE CHILE S.A. |
| 2024/0051,837 | METHOD FOR THE PRODUCTION OF LITHIUM HYDROXIDE (LIOH) DIRECTLY FROM LITHIUM CHLORIDE (LICI), WITHOUT THE NEED FOR AN INTERMEDIATE PRODUCTION OF LITHIUM CARBONATE OR SIMILAR | Jan 05, 21 | Feb 15, 24 | SOCIEDAD QUIMICA Y MINERA DE CHILE S.A. |
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