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Concentration of sulfuric acid
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C01B17/88
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Inorganic chemistry
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Sulfur Compounds thereof
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C01B17/88
Concentration of sulfuric acid
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Patents Grants
last 30 patents
Information
Patent Grant
Method for preparing electronic grade sulfuric acid from waste sulf...
Patent number
11,713,247
Issue date
Aug 1, 2023
GREEN FINE TECHNOLOGY CORP.
Ching-Jung Kan
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Reduction of content of carboxylic acids and derivatives thereof in...
Patent number
11,111,201
Issue date
Sep 7, 2021
Solvay S.A.
Jean-Marie Blaude
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of sulfur trioxide
Patent number
10,640,376
Issue date
May 5, 2020
Haldor Topsoe A/S
Morten Thellefsen
F22 - STEAM GENERATION
Information
Patent Grant
System for manufacturing high purity sulfuric acid
Patent number
10,351,427
Issue date
Jul 16, 2019
ASIA UNION ELECTRONIC CHEMICAL CORP.
Curtis Douglas Dove
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method for manufacturing high purity sulfuric acid
Patent number
9,926,198
Issue date
Mar 27, 2018
ASIA UNION ELECTRONIC CHEMICAL CORP.
Curtis Douglas Dove
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process and plant for the production of liquid acid
Patent number
9,849,419
Issue date
Dec 26, 2017
Outotec (Finland) Oy
Karl-Heinz Daum
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method and system for producing nitrobenzene
Patent number
9,139,508
Issue date
Sep 22, 2015
Bayer Intellectual Property GmbH
Bernd Pennemann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for increasing the sulfuric acid concentration of a sulfuric...
Patent number
8,580,224
Issue date
Nov 12, 2013
Teijin Aramid B.V.
Hendrikus Johannes Koehorst
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Membrane and process for the recovery of acid
Patent number
7,976,710
Issue date
Jul 12, 2011
ExxonMobil Research and Engineering Company
Bhupender S. Minhas
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Apparatus and method for osmotic membrane distillation
Patent number
7,361,276
Issue date
Apr 22, 2008
Aker Kvaemer Canada Inc.
Zbigniew Twardowski
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
System for recycling spent sulfuric acid, method for recycling spen...
Patent number
7,360,550
Issue date
Apr 22, 2008
Sony Corporation
Yasuhito Inagaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for the concentration of spent acid
Patent number
6,926,757
Issue date
Aug 9, 2005
Outokumpu Oyj
Aarno Kalliokoski
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Method for regulating water concentration in a process stream
Patent number
6,858,198
Issue date
Feb 22, 2005
Honeywell International
Troy W. Francisco
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Sulfuric acid recycle apparatus
Patent number
6,782,901
Issue date
Aug 31, 2004
Suntec System Co., Ltd.
Okimitsu Yasuda
B08 - CLEANING
Information
Patent Grant
Process for the concentration of dilute sulphuric acid solutions
Patent number
6,548,038
Issue date
Apr 15, 2003
Tioxide Group Services Limited
James Henry Bush
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
System and method for continuously reprocessing waste sulfuric acid...
Patent number
6,477,323
Issue date
Nov 5, 2002
Asahi Techno Glass Corporation
Kiyohito Koizumi
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Method for upgrading used sulfuric acids
Patent number
6,332,949
Issue date
Dec 25, 2001
Bayer Aktiengesellschaft
Heiko Beckhaus
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for purifying and concentrating spent sulfuric acids
Patent number
6,156,288
Issue date
Dec 5, 2000
Bayer Aktiengesellschaft
Heiko Beckhaus
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for concentration of sulphuric acid
Patent number
6,090,364
Issue date
Jul 18, 2000
Haldor Topsoe A/S
Peter Schoubye
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
High efficiency chemical processing
Patent number
5,500,095
Issue date
Mar 19, 1996
Athens Corporation
Robert T. Shinagawa
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for purification and concentration of sulfuric acid
Patent number
5,275,701
Issue date
Jan 4, 1994
Air Products and Chemicals, Inc.
William J. Mazzafro
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process of concentrating a dilute sulfuric acid in a three-stage fo...
Patent number
5,228,885
Issue date
Jul 20, 1993
Metallgesellschaft Aktiengesellschaft
Hartmut Wagner
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method and apparatus for sulfuric acid concentration
Patent number
5,075,097
Issue date
Dec 24, 1991
Gordon M. Cameron
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Pauling boiler and process for the concentration of sulphuric acid
Patent number
4,857,281
Issue date
Aug 15, 1989
Bayer Aktiengesellschaft
Heiko Beckhaus
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of nitrobenzene
Patent number
4,772,757
Issue date
Sep 20, 1988
Bayer Aktiengesellschaft
Gunter Lailach
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Generation of sulphur trioxide from oleum using microwave energy
Patent number
4,673,560
Issue date
Jun 16, 1987
C-I-L Inc.
Gary M. J. Masse
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Purification and reconcentration of waste sulphuric acid
Patent number
4,671,951
Issue date
Jun 9, 1987
C-I-L Inc.
Gary M. J. Masse
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process and a device for flue gas desulphurization
Patent number
4,668,490
Issue date
May 26, 1987
European Atomic Energy Community
Daniel van Velzen
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Apparatus and processes for the concentration of sulphuric acid
Patent number
4,547,353
Issue date
Oct 15, 1985
C-I-L Inc.
Gordon M. Cameron
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Apparatus for concentrating mineral acids
Patent number
4,440,595
Issue date
Apr 3, 1984
Aktiebolaget Bofors
Hans Broberg
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
PROCESS FOR CONCENTRATING DILUTED SULFURIC ACID
Publication number
20230406704
Publication date
Dec 21, 2023
BASF SE
Maximilian KOELLER
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
APPARATUS AND METHOD FOR CONCENTRATING CORROSIVE LIQUIDS
Publication number
20230390667
Publication date
Dec 7, 2023
Fabien PEREZ
C01 - INORGANIC CHEMISTRY
Information
Patent Application
INTEGRATED SULFUR RECOVERY AND HYDROGEN PRODUCTION PROCESS
Publication number
20230339753
Publication date
Oct 26, 2023
MAHIN RAMESHNI
C01 - INORGANIC CHEMISTRY
Information
Patent Application
CONCENTRATION OF SULFURIC ACID
Publication number
20230117014
Publication date
Apr 20, 2023
DUPONT SAFETY & CONSTRUCTION, INC.
Tirtha Chatterjee
C01 - INORGANIC CHEMISTRY
Information
Patent Application
METHOD OF CLEANING AN APPARATUS USED IN THE CONCENTRATION OF A MINE...
Publication number
20230016848
Publication date
Jan 19, 2023
Covestro Intellectual Property GmbH & Co. KG
Bernd Pennemann
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
PROCESS FOR THE REMOVAL OF PARTICULATE MATTER FROM AN AQUEOUS STREAM
Publication number
20220401863
Publication date
Dec 22, 2022
Topsoe A/S
Mads LYKKE
C01 - INORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PREPARING ELECTRONIC GRADE SULFURIC ACID FROM WASTE SULF...
Publication number
20220371890
Publication date
Nov 24, 2022
GREEN FINE TECHNOLOGY CORP.
Ching-Jung KAN
C01 - INORGANIC CHEMISTRY
Information
Patent Application
A PROCESS FOR INCREASING THE CONCENTRATION OF SULFURIC ACID AND EQU...
Publication number
20220219983
Publication date
Jul 14, 2022
HALDOR TOPSOE A/S
Martin Møllerhøj
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Process for workup of mixed acid and wastewater from the nitration...
Publication number
20220002155
Publication date
Jan 6, 2022
Hansjürgen WINTERBAUER
C01 - INORGANIC CHEMISTRY
Information
Patent Application
A PROCESS FOR INCREASING THE CONCENTRATION OF SULFURIC ACID AND EQU...
Publication number
20200062594
Publication date
Feb 27, 2020
HALDOR TOPSOE A/S
Martin Møllerhøj
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
A PROCESS FOR THE PRODUCTION OF SULFUR TRIOXIDE
Publication number
20190177161
Publication date
Jun 13, 2019
HALDOR TOPSOE A/S
Morten Thellefsen
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
METHOD FOR MANUFACTURING HIGH PURITY SULFURIC ACID
Publication number
20180162731
Publication date
Jun 14, 2018
ASIA UNION ELECTRONIC CHEMICAL CORP.
Curtis Douglas DOVE
C01 - INORGANIC CHEMISTRY
Information
Patent Application
PROCESS AND PLANT FOR THE PRODUCTION OF LIQUID ACID
Publication number
20170182457
Publication date
Jun 29, 2017
OUTOTEC (FINLAND) OY
Karl-Heinz DAUM
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHOD AND SYSTEM FOR PRODUCING NITROBENZENE
Publication number
20140357905
Publication date
Dec 4, 2014
Bernd Pennemann
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR INCREASING THE SULFURIC ACID CONCENTRATION OF A SULFURIC...
Publication number
20130236389
Publication date
Sep 12, 2013
TEIJIN ARAMID B.V.
Hendrikus Johannes Koehorst
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
METHOD FOR CONCENTRATING DILUTE SULFURIC ACID AND AN APPARATUS FOR...
Publication number
20120067740
Publication date
Mar 22, 2012
OUTOTEC OYJ
Michael Gasik
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
PROCESS AND SYSTEM FOR PRODUCTION OF CONCENTRATED SULPHURIC ACID FR...
Publication number
20110311433
Publication date
Dec 22, 2011
Mads Lykke
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Apparatus and method for osmotic membrane distillation
Publication number
20080173539
Publication date
Jul 24, 2008
Aker Kvaerner Canada Inc.
Zbigniew Twardowski
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
Low temperature process for regenerating spent sulfuric acid
Publication number
20080063593
Publication date
Mar 13, 2008
CATALYTIC DISTILLATION TECHNOLOGIES
Lawrence A. Smith
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Process for the coupled production of chlorline and isocyanates
Publication number
20070265466
Publication date
Nov 15, 2007
Bayer MaterialScience AG
Markus Dugal
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Membrane and process for the recovery of acid
Publication number
20060144792
Publication date
Jul 6, 2006
Bhupender S. Minhas
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Apparatus and method for osmotic membrane distillation
Publication number
20050269266
Publication date
Dec 8, 2005
Aker Kvaerner Canada Inc.
Zbigniew Twardowski
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
System for recycling spent sulfuric acid, method for recycling sulf...
Publication number
20040211464
Publication date
Oct 28, 2004
Yasuhito Inagaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method for the concentration of spent acid
Publication number
20040062707
Publication date
Apr 1, 2004
Aarno Kalliokoski
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Method for regulating water concentration in a process stream
Publication number
20020155057
Publication date
Oct 24, 2002
Troy W. Francisco
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Sulfuric acid recycle apparatus
Publication number
20020108643
Publication date
Aug 15, 2002
Okimitsu Yasuda
C01 - INORGANIC CHEMISTRY
Information
Patent Application
SYSTEM AND METHOD FOR CONTINUOUSLY REPROCESSING WASTE SULFURIC ACID...
Publication number
20010003555
Publication date
Jun 14, 2001
KIYOHITO KOIZUMI
C01 - INORGANIC CHEMISTRY