ClassID:

91329

C07C41/38 - CPC Classification

Classification description:

Preparation of ethers; Preparation of compounds having groups, groups or groups; Preparation of ethers; Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Recent Application in this class:
#1
20250250384
2025-08-07

BIO-BASED POLYMERS FROM RAW LIGNOCELLULOSIC BIOMASS

#2
20250236579
2025-07-24

METHOD FOR EXTRACTING FLUORINE-CONTAINING ETHER COMPOUND

#3
20250051253
2025-02-13

SUPERCRITICAL ETHYLENE EXTRACTION PROCESS FOR SELECTIVELY RECOVERING PHENOLIC COMPOUNDS FROM BIO-CRUDE AND/OR BIO-OIL

#4
20250042830
2025-02-06

METHOD FOR PRODUCING COMPOSITION CONTAINING PURIFIED FLUORINE-CONTAINING ETHER COMPOUND

#5
20240317662
2024-09-26

PRODUCTION OF HALOGENATED ALKOXYETHANE

#6
20240010590
2024-01-11

Methods for preparing and purifying environmentally compatible detergents

#7
20230113164
2023-04-13

Ion-conducting bio-based polymers from raw lignocellulosic biomass

#8
20230041468
2023-02-09

PREPARATION OF HALOGENATED ALKOXYETHANE

#9
20220324781
2022-10-13

HIGHER SECONDARY ALCOHOL ALKOXYLATE PRECURSOR, HIGHER SECONDARY ALCOHOL ALKOXYLATE ADDUCT AND HIGHER SECONDARY ALKYL ETHER SULFATE ESTER SALT, AND METHODS FOR PRODUCING THESE

#10
20210101851
2021-04-08

Co-production of high purity isobutane and butene-1 from mixed C4s

#11
20200339494
2020-10-29

Purification method and production method of difluoromethyl-1, 2, 2, 2-tetrafluoroethyl ether

#12
20190210949
2019-07-11

Me 1 hod for removing or collecting 2-alkoxyethanol, and method for producing (2-alkoxyethyl) vinyl ether

#13
20190144590
2019-05-16

Bio-based polymers from raw lignocellulosic biomass

#14
20190077738
2019-03-14

Method of producing solution composition containing monoetherified product, solution composition, and method of producing polymerizable compound

#15
20180201570
2018-07-19

Compound and method for producing same

#16
20180155272
2018-06-07

Process for recovering aminoalcohols and glycols from aqueous streams of taurine production

#17
20180095368
2018-04-05

Compound, resin, and purification method thereof, material for forming underlayer film for lithography, composition for forming underlayer film, and underlayer film, as well as resist pattern forming method and circuit pattern forming method

#18
20180029968
2018-02-01

COMPOUND, RESIN, MATERIAL FOR FORMING UNDERLAYER FILM FOR LITHOGRAPHY, COMPOSITION FOR FORMING UNDERLAYER FILM FOR LITHOGRAPHY, UNDERLAYER FILM FOR LITHOGRAPHY, RESIST PATTERN FORMING METHOD, CIRCUIT PATTERN FORMING METHOD, AND PURIFICATION METHOD OF COMPOUND OR RESIN

#19
20170327473
2017-11-16

Process for the preparation of tetraconazole

#20
20170305823
2017-10-26

PROCESS FOR RECLAIMING ALCOHOLS

#21
20160347697
2016-12-01

Process for recovery of pure components from product mixture of one step dimethyl ether synthesis reactor

#22
20160326695
2016-11-10

PROCESS FOR REFINING CHEMICALS FROM PULP AND PAPER MILL EFFLUENT

#23
20160326455
2016-11-10

Perfluoropolyether extraction processes

#24
20160326081
2016-11-10

Processing by a separation technique of a gas mixture formed from a product stream of a dimethyl reactor

#25
20160319216
2016-11-03

Recovery of perfluorinated polyether oils from grease matrices incorporating extraction aids by carbon dioxide extraction

#26
20160289256
2016-10-06

NOVEL METHOD FOR THE DEPOLYMERISATION OF LIGNIN

#27
20160168062
2016-06-16

Process for depolymerization of lignin

#28
20160102035
2016-04-14

Process for the separation of an alkylene glycol

#29
20150133691
2015-05-14

Recovery method and recycling method for boron trifluoride complex

#30
20150119609
2015-04-30

Carboxylic acid salt removal during hydrate inhibitor recovery

#31
20140357901
2014-12-04

Systems and methods for recovering dimethyl ether from gas mixtures and liquid mixtures

#32
20130210928
2013-08-15

Biphenyl compound or pharmaceutically acceptable salt thereof, method for preparing novel biphenyl compound or pharmaceutically acceptable salt thereof, and pharmaceutical composition containing same as active ingredient for preventing or treating diabetes complications

#33
20130146537
2013-06-13

Process for working-up a reaction mixture comprising polyether polyol

#34
20130079558
2013-03-28

Processes for separating components in alkyl perfluoroalkene ether production

#35
20130046117
2013-02-21

Process for the manufacturing of sevoflurane

#36
20120289750
2012-11-15

Process and Apparatus for Coupling Separation and Purification of Ethyl Tert-Butyl Ether

#37
20120178945
2012-07-12

Benzenoid compounds of antrodia cinnamomea, preparation and analysis method thereof

#38
20120083629
2012-04-05

METHOD FOR PRODUCING FLUORINE-CONTAINING ETHER WITH HIGH PURITY

#39
20120010435
2012-01-12

Method for isolating di-trimethylol propane

#40
20110306803
2011-12-15

SEPARATION OF GLYCOL MONO-TERTIARY-BUTYL ETHER AND GLYCOL DI-TERTIARY-BUTYL ETHER

#41
20110094871
2011-04-28

Process for separating solids from valuable or harmful liquids by vaporisation

#42
20110021847
2011-01-27

Ether production method involving alcohol separation by an ionic liquid

#43
20090171128
2009-07-02

Process for the purification of fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether (sevoflurane)

#44
20080306309
2008-12-11

Separation/purification of desflurane from hydrogen fluoride

#45
20080274943
2008-11-06

Process for Producing Narrow Range Alkoxylates

#46
20050234268
2005-10-20

Chromatographic method for the analysis of both in process and finished sevoflurane