Description
Class C01D : COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
Subclass 1/42: Oxides or hydroxides of sodium, potassium, or alkali metals in general Hydroxides Concentration; Dehydration
C01D 1/42
Sub-Class
Stats
- 9 US PATENTS IN FORCE
- 3 US APPLICATIONS PENDING
- 7 Total Patent Owners
- 26 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11465907 | Process for producing a concentrated aqueous sodium hydroxide solution | Nov 20, 20 | Oct 11, 22 | Solvay SA |
| 10961126 | Process for reducing fouling in evaporators in lithium hydroxide recovery | Jul 27, 18 | Mar 30, 21 | VEOLIA WATER TECHNOLOGIES, INC. |
| 10233551 | Apparatus for making and concentrating an aqueous caustic alkali | Mar 23, 15 | Mar 19, 19 | Westlake Vinyl Corporation |
| 10041180 | Method for concentrating an aqueous caustic alkali via splitting a catholyte into a first stream for heat recovery and a second stream for evaporation | Mar 23, 15 | Aug 07, 18 | Westlake Vinyl Corporation |
| 9849400 | Method for concentrating aqueous lye and apparatus suitable therefor | Jun 27, 12 | Dec 26, 17 | THYSSENKRUPP UHDE GMBH, VINNOLIT GMBH & CO. KG, |
| 9714175 | System for extracting lithium carbonate from saline lake water | Jun 18, 14 | Jul 25, 17 | Binyuan Zhu, Tibet Jin Hao Investment Co., Ltd., |
| 9593023 | Process for treating a sodium carbonate purge | Nov 11, 14 | Mar 14, 17 | SOLVAY SA |
| 8986517 | Method and apparatus for making and concentrating an aqueous caustic alkali | Oct 12, 12 | Mar 24, 15 | WESTLAKE VINYL CORPORATION |
| 7524422 | Clarification and sorptive-filtration system for the capture of constituents and particulate matter in liquids and gases | Aug 22, 07 | Apr 28, 09 | UNIT PROCESS TECHNOLOGIES, LLC |
Recent Publications
| 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 |
| 2024/0051,838 | METHOD FOR PRODUCING LITHIUM HYDROXIDE | Mar 25, 22 | Feb 15, 24 | Idemitsu Kosan Co., Ltd. |
| 2017/0183,237 | PROCESS FOR TREATING A SODIUM CARBONATE PURGE | Mar 10, 17 | Jun 29, 17 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 27 Months (last 2 years Issuances)
- 27 Months (last 5 years Issuances)