ClassID:

120793

C25B1/22 - CPC Classification

Classification description:

Electrolytic production of inorganic compounds or non-metals; Products Inorganic acids

Recent Application in this class:
#1
20260077296
2026-03-19

COMPLETE CONVERSION OF SULFUR DIOXIDE TO SULFURIC ACID BY AQUEOUS ACID ABSORPTION

#2
20260055526
2026-02-26

PROCESSES FOR PREPARING LITHIUM HYDROXIDE

#3
20250388512
2025-12-25

HIGH EFFICIENCY ACID-BASE LEACHING METHODS AND SYSTEMS

#4
20250313975
2025-10-09

SULFUR DIOXIDE DEPOLARIZED ELECTROLYZER AND METHOD FOR PERFORMANCE RECOVERY

#5
20250283237
2025-09-11

SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE

#6
20250282633
2025-09-11

SEQUENTIAL HYDROMETALURGICAL RECOVERY OF METAL VALUES WITH SEQUESTERED CARBON

#7
20250257476
2025-08-14

SYSTEMS AND METHODS FOR INCREASED SULFURIC ACID CONCENTRATION FROM SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND USES THEREOF

#8
20250215579
2025-07-03

Electrolytic recycling system of waste phosphogypsum and method

#9
20250188627
2025-06-12

ELECTROLYSIS OR CO-ELECTROLYSIS REACTOR (SOEC) OR FUEL CELL (SOFC) WITH STACKING OF ELECTROCHEMICAL CELLS INCORPORATING MECHANICAL REINFORCEMENT ELEMENTS WITH TEMPERATURE-VARIABLE STIFFNESS

#10
20250179658
2025-06-05

METHOD OF PRODUCING A METAL BOROHYDRIDE OR BORIC ACID FROM METAL METABORATE

#11
20250171912
2025-05-29

ELECTROLYZERS

#12
20250154057
2025-05-15

METHODS FOR CARBON SEQUESTRATION AND MAKING MAGNESIUM-BASED CEMENT

#13
20240425994
2024-12-26

Carbon Capture Using Electrochemically-Produced Acid and Base

#14
20240271302
2024-08-15

SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE

#15
20240240330
2024-07-18

PROCESS FOR PRODUCING LITHIUM HYDROXIDE

#16
20240229266
2024-07-11

PROCESSES FOR PREPARING LITHIUM HYDROXIDE

#17
20240209519
2024-06-27

ELECTROLYTE CIRCULATION-BASED SODIUM HYPOCHLORITE GENERATOR WITH AUTOMATIC ELECTROLYTIC CELL CLEANING FUNCTION

#18
20240209517
2024-06-27

GAS-LESS ELUENT GENERATOR

#19
20240167168
2024-05-23

CARBON DIOXIDE ELECTROLYSIS APPARATUS

#20
20240149240
2024-05-09

Sulfuric acid production with mineral carbon sequestration

#21
20240141510
2024-05-02

Carbon Capture Using Electrochemically-Produced Acid and Base

#22
20240133054
2024-04-25

CHEMICAL REACTION DEVICES INVOLVING ACID AND/OR BASE, AND RELATED SYSTEMS AND METHODS

#23
20240124987
2024-04-18

Chemical reaction devices involving acid and/or base, and related systems and methods

#24
20240110305
2024-04-04

Sulfur dioxide depolarized electrolysis and electrolyzer therefore

#25
20240110304
2024-04-04

SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE

#26
20230357938
2023-11-09

Hypochlorous acid generating electrode

#27
20230151499
2023-05-18

DIRECT CONVERSION OF AIR TO AMMONIA AND NITRIC ACID VIA ADVANCED MANUFACTURED ELECTROCHEMICAL REACTORS

#28
20230079765
2023-03-16

STARTUP METHOD FOR ELECTROLYTIC SULFURIC ACID SOLUTION MANUFACTURING SYSTEM

#29
20230055791
2023-02-23

METHOD OF TREATING BALLAST WATER

#30
20230002289
2023-01-05

SYSTEM FOR MODIFYING THE SURFACE PROPERTIES OF MATERIALS

#31
20220411940
2022-12-29

Process to convert reduced sulfur species and water into hydrogen and sulfuric acid

#32
20220386544
2022-12-08

HYDRATION AND SANITIZATION SYSTEM FOR AN INDOOR GARDENING APPLIANCE

#33
20220364247
2022-11-17

System and Method for Making Hypochlorous Acid Using Saltwater with a Bicarbonate Compound

#34
20220145477
2022-05-12

CHEMICAL REACTION DEVICES INVOLVING ACID AND/OR BASE, AND RELATED SYSTEMS AND METHODS

#35
20220135404
2022-05-05

Methods and systems for production of an aqueous hypochlorous acid solution

#36
20220106694
2022-04-07

Electrolytic remote ion source and ion recycle (ISIR) module

#37
20220106691
2022-04-07

Process To Convert Reduced Sulfur Species And Water Into Hydrogen And Sulfuric Acid

#38
20220002889
2022-01-06

METHOD AND SYSTEM FOR CO2 EMISSION REDUCTION IN THE PRODUCTION OF CHEMICAL COMPOUNDS

#39
20210376399
2021-12-02

Lithium-ion batteries recycling process

#40
20210371282
2021-12-02

Method and apparatus for capturing carbon dioxide and producing sulfuric acid by sodium bisulfate

#41
20210348285
2021-11-11

PROCESSES FOR PREPARING LITHIUM HYDROXIDE

#42
20210230756
2021-07-29

Dual-membrane on-line generator for acid or alkali solution

#43
20210230755
2021-07-29

Method for manufacturing sulfuric acid solution and electrolyzer used thereof

#44
20200309682
2020-10-01

Functional water concentration sensor, and calculation method

#45
20200165734
2020-05-28

ELECTROCHEMICAL REACTOR AND PROCESS

#46
20200080208
2020-03-12

METHOD FOR STABILIZATION OF HYPOCHLOROUS ACID SOLUTION

#47
20190376191
2019-12-12

Process to convert reduced sulfur species and water into hydrogen and sulfuric acid

#48
20180327287
2018-11-15

System for regenerating sodium hydroxide and sulfuric acid from waste water stream containing sodium and sulfate ions

#49
20180230606
2018-08-16

Electrolysis apparatus for collecting nitrogen compound using ferric-ethylenediamine tetraacetic acid

#50
20180209053
2018-07-26

Reduction catalyst, and chemical reactor, reduction method and reduction product-producing system employing the catalyst

#51
20180127852
2018-05-10

Systems and methods for recovery of lead from lead acid batteries

#52
20170321332
2017-11-09

PROCESS FOR PRODUCING LIQUID HYDROGEN

#53
20170252696
2017-09-07

Sulphur-assisted carbon capture and utilization (CCU) methods and systems

#54
20170114468
2017-04-27

Electrochemical reactor and process

#55
20170058408
2017-03-02

Method for electrolytic recycling and regenerating acidic cupric chloride etchants

#56
20160312676
2016-10-27

MEMBRANE-BASED EXHAUST GAS SCRUBBING METHOD AND SYSTEM

#57
20160265123
2016-09-15

Cell and system for preparation of antimicrobial solutions

#58
20160186338
2016-06-30

Method for producing peroxodisulfates in aqueous solution

#59
20160160366
2016-06-09

Apparatus and method for operating an electrolysis with an oxygen depolarized cathode

#60
20160097136
2016-04-07

NanoTin Catalysts for Electrochemical Reduction of Carbon Dioxide to Formate

#61
20160032466
2016-02-04

Liquid treatment apparatus

#62
20150315713
2015-11-05

Production of low temperature electrolytic hydrogen

#63
20150183653
2015-07-02

METHOD FOR PREPARING ALKALI METAL CARBONATES FROM INORGANIC MATERIALS INCLUDING ALKALI METAL IONS USING ELECTROLYSIS SYSTEM

#64
20150090665
2015-04-02

ACTIVATED SOLUTIONS FOR WATER TREATMENT

#65
20150041323
2015-02-12

Cell for depolarised electrodialysis of salt solutions

#66
20150027880
2015-01-29

NO MEMBRANE ELECTROLYTIC DEVICE

#67
20140246309
2014-09-04

ELECTROCHEMICAL CELL

#68
20140202875
2014-07-24

ELECTROLYSER AND ASSEMBLY COMPRISING SAME, IN PARTICULAR FOR THE PRODUCTION OF H2 AND O2

#69
20140138255
2014-05-22

Method for preparing a disinfectant and an electrolyzer for carrying out this method

#70
20140004001
2014-01-02

Large capacity acid or base generator and method of use

#71
20140001053
2014-01-02

Generator and method for forming hypochlorous acid

#72
20130334059
2013-12-19

APPARATUS FOR ELECTROLYZING SULFURIC ACID AND METHOD FOR ELECTROLYZING SULFURIC ACID

#73
20130292262
2013-11-07

Purification of carbon dioxide from a mixture of gases

#74
20130292257
2013-11-07

Integrated process for producing carboxylic acids from carbon dioxide

#75
20130175181
2013-07-11

Integrated process for producing carboxylic acids from carbon dioxide

#76
20130092553
2013-04-18

SUPPLY SYSTEM AND SUPPLY METHOD FOR FUNCTIONAL SOLUTION

#77
20130008354
2013-01-10

METHODS AND SYSTEMS OF BICARBONATE SOLUTION

#78
20120156126
2012-06-21

Process and apparatus for precipitating cationic metal hydroxides and the recovery of sulfuric acid from acidic solutions

#79
20110147652
2011-06-23

Systems and methods for generating sulfuric acid

#80
20110143549
2011-06-16

ETCHING METHOD, METHOD FOR MANUFACTURING MICROSTRUCTURE, AND ETCHING APPARATUS

#81
20110132771
2011-06-09

METHOD FOR PRODUCING PEROXODISULFATES IN AQUEOUS SOLUTION

#82
20110114501
2011-05-19

Purification of carbon dioxide from a mixture of gases

#83
20110108421
2011-05-12

ELECTROCHEMICAL METHODS AND PROCESSES FOR CARBON DIOXIDE RECOVERY FROM ALKALINE SOLVENTS FOR CARBON DIOXIDE CAPTURE FROM AIR

#84
20110091366
2011-04-21

NEUTRALIZATION OF ACID AND PRODUCTION OF CARBONATE-CONTAINING COMPOSITIONS

#85
20110071309
2011-03-24

Methods and Systems for Utilization of HCI

#86
20110042230
2011-02-24

LOW-ENERGY ELECTROCHEMICAL BICARBONATE ION SOLUTION

#87
20100313794
2010-12-16

PRODUCTION OF CARBONATE-CONTAINING COMPOSITIONS FROM MATERIAL COMPRISING METAL SILICATES

#88
20100230296
2010-09-16

Production of Hydrogen Gas From Sulfur-Containing Compounds

#89
20100144051
2010-06-10

Large capacity acid or base generator and method of use

#90
20090297633
2009-12-03

Process for producing carbonic acid gas solution, an apparatus for the same and carbonated water

#91
20090220405
2009-09-03

Systems and methods for generating sulfuric acid

#92
20090175960
2009-07-09

Process for producing carbon dioxide solution, production apparatus, and carbonated water

#93
20090127200
2009-05-21

Barrier with a seated ion exchange bead and method

#94
20090045073
2009-02-19

Electrolysis cell comprising sulfur dioxide-depolarized anode and method of using the same in hydrogen generation

#95
20090000956
2009-01-01

Production of low temperature electrolytic hydrogen

#96
20070187254
2007-08-16

Method for producing peroxodisulfates in aqueous solution

#97
20070187247
2007-08-16

Electrochemical methods and processes for carbon dioxide recovery from alkaline solvents for carbon dioxide capture from air

#98
20070007147
2007-01-11

Multiple phase SO3/SO2/H2O/H2SO4 electrolyzer

#99
20060269452
2006-11-30

Large capacity acid or base generator and method of use

#100
20050258048
2005-11-24

Large capacity acid or base generator and method of use

#101
20050079122
2005-04-14

Systems and methods for generating chlorine dioxide

#102
20050079121
2005-04-14

Systems and methods for generating chlorine dioxide

#103
20050000825
2005-01-06

Process for efficient hydrogen production by thermochemical water splitting using iodine and sulfur dioxide