ClassID:

92321

C07C201/16 - CPC Classification

Classification description:

Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton; Preparation of nitro compounds Separation; Purification; Stabilisation; Use of additives

Recent Application in this class:
#1
20260085051
2026-03-26

PREPARATION OF 2-CHLORO-4-FLUORO-5-NITROBENZOIC ACID

#2
20250179005
2025-06-05

CRYSTALLINE 2-FLUORO-3-NITROTOLUENE AND PROCESS FOR THE PREPARATION THEREOF

#3
20250074912
2025-03-06

IMPROVED PROCESS FOR THE PREPARATION OF UPADACITINIB

#4
20240368070
2024-11-07

Electrolyte Additive and a Preparation Method Therefor, an Electrolyte and a Lithium Ion Battery

#5
20240239730
2024-07-18

PHARMACEUTICAL COMPOSITIONS COMPRISING MONOTERPENES

#6
20240217915
2024-07-04

PREPARATION OF 2-CHLORO-4-FLUORO-5-NITROBENZOIC ACID

#7
20240018088
2024-01-18

SEPARATION AND PURIFICATION METHOD OF 2-NITROETHANOL

#8
20230130823
2023-04-27

PROCESS FOR THE PRODUCTION OF ANTITUMOUR PHARMACEUTICAL COMPOSITIONS USING PUSH-PULL BUTADIENES, COMPOUNDS AND USES THEREOF

#9
20230023245
2023-01-26

Zeolitic adsorbent for the separation of hydrocarbon isomers

#10
20230008804
2023-01-12

Method for operating a distillation column

#11
20220363619
2022-11-17

Pharmaceutical compositions comprising monoterpenes

#12
20220324790
2022-10-13

PROCESS FOR THE PREPARATION OF A-METHYL-[4-(NITRO)-2-(TRIFLUOROMETHYL) -BENZYL NITRATE

#13
20220169592
2022-06-02

Process for the continuous production of nitrobenzene

#14
20220162151
2022-05-26

PROCESS AND DEVICE FOR PRODUCING NITROBENZENE

#15
20210292271
2021-09-23

Crystalline 2-fluoro-3-nitrotoluene and process for the preparation thereof

#16
20210130271
2021-05-06

PHARMACEUTICAL COMPOSITIONS COMPRISING MONOTERPENES

#17
20200316558
2020-10-08

Zeolite adsorbents based on barium, strontium, potassium and sodium, preparation process therefor, and uses thereof

#18
20200131106
2020-04-30

Pharmaceutical compositions comprising monoterpenes

#19
20200017434
2020-01-16

Method for producing nitrobenzene

#20
20190202785
2019-07-04

Processes and intermediates for NEP inhibitor synthesis

#21
20190099737
2019-04-04

Carbon sorbent for removal of metal catalysts from pharmaceuticals

#22
20180346405
2018-12-06

Process for producing nitrobenzene

#23
20180201556
2018-07-19

Zeolite adsorbents, preparation process therefor and uses thereof

#24
20180201555
2018-07-19

Zeolite adsorbents, preparation process therefor and uses thereof

#25
20180179144
2018-06-28

Nitration of aromatic compounds

#26
20180161754
2018-06-14

Zeolitic adsorbents with large external surface area, process for preparing them and uses thereof

#27
20180155269
2018-06-07

Method of purifying nitrated aromatic compounds from a nitration process

#28
20170305835
2017-10-26

Method for removing impurities from dinitrotoluenes

#29
20170291869
2017-10-12

Exhaust gas cleaning in a method for continuously producing dinitrotoluene

#30
20170174612
2017-06-22

Process for producing nitrobenzene

#31
20170166514
2017-06-15

Method for removing impurities from dinitrotoluenes

#32
20170152210
2017-06-01

Methods for producing chemical products with operation interruptions

#33
20170144963
2017-05-25

Method for producing toluenediamine

#34
20160332942
2016-11-17

Pharmaceutical compositions comprising monoterpenes

#35
20160251302
2016-09-01

Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acid

#36
20160250625
2016-09-01

Method of producing optically active compound

#37
20160207025
2016-07-21

Zeolitic adsorbents with large external surface area, process for preparing them and uses thereof

#38
20160194270
2016-07-07

Method for removing HCN from crude dinitro toluene

#39
20160158162
2016-06-09

Pharmaceutical compositions comprising monoterpenes

#40
20160083332
2016-03-24

Process for the preparation of nitrobenzene by adiabatic nitration

#41
20160075582
2016-03-17

Process for working up waste water from nitrobenzene preparation

#42
20160060152
2016-03-03

Process for working up waste water from nitrobenzene preparation

#43
20160039730
2016-02-11

Pharmaceutical compositions comprising monoterpenes

#44
20150368173
2015-12-24

Pharmaceutical compositions comprising monoterpenes

#45
20150218123
2015-08-06

Preparation method for optically active bicyclic gamma-amino acid compound

#46
20150174551
2015-06-25

Method and apparatus for purifying nitration products

#47
20150166460
2015-06-18

Process for the production of nitrobenzene by adiabatic nitration

#48
20140221703
2014-08-07

Method and apparatus for purifying nitration products

#49
20140209464
2014-07-31

Separation and Manipulation of a Chiral Object

#50
20140031594
2014-01-30

Apparatus and process for nitration selectivity flexibility enabled by azeotropic distillation

#51
20130245340
2013-09-19

Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution

#52
20130216443
2013-08-22

Process for nitroalkane recovery by aqueous phase recycle to nitration reactor

#53
20130150608
2013-06-13

Production of alkylaromatic compounds

#54
20130041189
2013-02-14

Process for purifying wastewaters from the workup of crude aromatic nitro compounds

#55
20130041188
2013-02-14

PROCESS FOR PURIFYING WASTEWATERS FROM THE WORKUP OF CRUDE AROMATIC NITRO COMPOUNDS

#56
20130018210
2013-01-17

Removal of non-aromatic impurities from a nitration process

#57
20130014866
2013-01-17

METHOD FOR RECLAIMING HIGH EXPLOSIVE FROM WARHEAD BY MELTING-OUT IN SUPERCRITICAL FLUID

#58
20120248038
2012-10-04

ACID TOLUENE EXTRACTION OF DNT WASTEWATERS

#59
20120234773
2012-09-20

Acidic sludge adsorption of DNT wastewaters

#60
20120197047
2012-08-02

Prevention of precipitation from nitrated aromatic crude products

#61
20120136181
2012-05-31

Washing system for nitroaromatic compounds

#62
20110280860
2011-11-17

Pharmaceutical compositions comprising monoterpenes

#63
20110124942
2011-05-26

Aggregate zeolitic absorbents, their method of preparation and their uses

#64
20110105806
2011-05-05

Method for eliminating color forming impurities from nitro compounds

#65
20110092748
2011-04-21

Process for nitroalkane recovery by aqueous phase recycle to nitration reactor

#66
20090043135
2009-02-12

Process for distillatively removing dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitrating of toluene with nitrating acid

#67
20080274555
2008-11-06

Separation and manipulation of a chiral object

#68
20080045756
2008-02-21

Process for preparation of a nitrophenol

#69
20070249873
2007-10-25

Process for the production of nitrobenzene

#70
20070088183
2007-04-19

Recovery of nitrating acid mixtures from nitration processes

#71
20070043244
2007-02-22

Method for extracting nitrocresols from waste water produced in the manufacture of mononitrotoluene and use of said extract

#72
20050256343
2005-11-17

Process for preparation of a nitrophenol

#73
20050224424
2005-10-13

Process for the working-up of waste waters containing aromatic nitro compounds