ClassID:

84762

C01B21/40 - CPC Classification

Classification description:

Nitrogen; Compounds thereof; Nitrogen oxides; Oxyacids of nitrogen; Salts thereof; Nitric acid Preparation by absorption of oxides of nitrogen

Recent Application in this class:
#1
20260011764
2026-01-08

SOFC FOR THE COMBINED PRODUCTION OF ELECTRICITY AND NITRIC OXIDE

#2
20260008685
2026-01-08

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#3
20260008684
2026-01-08

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#4
20260008683
2026-01-08

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#5
20260008682
2026-01-08

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#6
20260001762
2026-01-01

NITRIC ACID PRODUCTION WITH OXYGEN SUPPLY TO ABSORPTION SECTION

#7
20250340448
2025-11-06

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#8
20250250168
2025-08-07

NITRIC ACID PLANT AND PROCESS WITH HEAT RECOVERY SYSTEM

#9
20250171303
2025-05-29

NITRIC ACID PLANT FOR PRODUCING NITRIC ACID

#10
20250144581
2025-05-08

MIXING SYSTEM

#11
20250083959
2025-03-13

High-Yield Atmospheric Nitric Acid Generator for Agricultural Waste Treatment

#12
20250011171
2025-01-09

MONO PRESSURE SYSTEM FOR PRODUCING NITRIC ACID AND METHOD OF OPERATING THEREOF

#13
20240367976
2024-11-07

DUAL PRESSURE SYSTEM FOR PRODUCING NITRIC ACID AND METHOD OF OPERATING THEREOF

#14
20240010493
2024-01-11

Thermal Reactor Comprising a Gas Permeable Cage Arranged to Influence a Flow Path of Gas

#15
20240002231
2024-01-04

AMMONIA BURNER FOR NITRIC ACID PRODUCTION

#16
20230382734
2023-11-30

MONO-PRESSURE PLANT FOR THE PRODUCTION OF NITRIC ACID AND METHOD FOR OPERATING SAME

#17
20230378507
2023-11-23

METHOD FOR OPERATING AN SOFC FOR THE COMBINED PRODUCTION OF ELECTRICITY AND NITRIC OXIDE

#18
20230264957
2023-08-24

DUAL PRESSURE PLANT FOR THE PRODUCTION OF NITRIC ACID AND METHOD FOR OPERATING SAME

#19
20230257268
2023-08-17

Nitric acid production process and plant with oxygen supply unit

#20
20230219052
2023-07-13

MICROWAVE PLASMA SYSTEM FOR EFFICIENTLY PRODUCING NITRIC ACID AND NITROGEN FERTILIZERS

#21
20230202845
2023-06-29

ABSORPTION COLUMN COMPRISING A FEED BOX HAVING A SERRATED WEIR AND A STRUCTURED PACKING AND PROCESS FOR THE PRODUCTION OF NITRIC ACID

#22
20230115002
2023-04-13

PROCESS FOR THE PRODUCTION OF NITRIC ACID

#23
20230114641
2023-04-13

METHOD AND PRODUCTION PLANT FOR PRODUCING NITRIC ACID

#24
20230074083
2023-03-09

ABSORPTION TOWER FOR A NITRIC ACID PLANT METHOD FOR PRODUCING NITRIC ACID

#25
20220332581
2022-10-20

PROCESS AND REACTOR FOR CATALYTIC OXIDATION OF AMMONIA

#26
20220119258
2022-04-21

Bleaching tower and method for nitric acid production

#27
20210387860
2021-12-16

PRODUCTION OF LITHIUM CHEMICALS AND METALLIC LITHIUM

#28
20210300759
2021-09-30

High energy recovery nitric acid process using liquid oxygen containing fluid

#29
20210179527
2021-06-17

Method for oxidizing a 1,1,-bis-(3,4-dimethylphenyl)-alkane to 3,3′,4,4′-benzophenone tetracarboxylic acid

#30
20200289983
2020-09-17

Catalytic oxidation of NO/SOin flue gases with atmospheric oxygen as the oxidation reagent

#31
20200198970
2020-06-25

Utilization of pollutants from internal combustion engines

#32
20200131039
2020-04-30

Plant and process for producing nitric acid

#33
20190284052
2019-09-19

Process for nitric acid production

#34
20190218097
2019-07-18

Plant and process for producing nitric acid

#35
20190111387
2019-04-18

METHOD FOR REDUCING THE WASTE GAS CONCENTRATION OF NOX IN A PLANT FOR PRODUCING NITRIC ACID AS SAID PLANT IS STARTED UP AND/OR SHUT DOWN

#36
20180354794
2018-12-13

REDUCTION OF THE NOX WASTE GAS CONCENTRATION IN THE PRODUCTION OF NITRIC ACID DURING A SHUTDOWN AND/OR START-UP PROCESS OF THE PRODUCTION DEVICE

#37
20180230606
2018-08-16

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

#38
20180009661
2018-01-11

Energy storage transportation method and energy carrier system

#39
20170334722
2017-11-23

Method for removing NO and NOfrom the nitric acid production process, and an installation suitable for same

#40
20170291815
2017-10-12

Machine train for producing nitric acid

#41
20150376010
2015-12-31

PROCESS AND PRODUCTION PLANT FOR PREPARING NITRIC ACID

#42
20150098881
2015-04-09

Process for reducing the nitrogen oxide off-gas concentration in a nitric acid plant during shut-down and/or start-up, and nitric acid plant suitable therefor

#43
20140377157
2014-12-25

Method and device for producing nitric acid

#44
20130336872
2013-12-19

Method for removing NO and NOfrom the nitric acid production process, and an installation suitable for same

#45
20130294998
2013-11-07

Process for producing nitric acid

#46
20130216461
2013-08-22

NITRIC ACID PRODUCTION

#47
20120252999
2012-10-04

Production of chemical compounds

#48
20120228218
2012-09-13

Process for workup of NO-containing offgases from wastewater streams of nitration plants

#49
20120207665
2012-08-16

Treatment of NO-containing gas streams

#50
20120207664
2012-08-16

Systems and methods for recovering nitric acid from pickling solutions

#51
20100181530
2010-07-22

Process for preparing nitric acid with a concentration in the range from 50 to 77.8% by weight

#52
20050070739
2005-03-31

Process for treating an aqueous medium containing phosphate salt and organic compounds