ClassID:

91264

C07C37/74 - CPC Classification

Classification description:

Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring; Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation

Sub-classes:
Recent Application in this class:
#1
20260060906
2026-03-05

SYNTHESIS AND PURIFICATION OF CANNABIGEROL AND ITS APPLICATION

#2
20250367161
2025-12-04

Process For Production Of Essentially Pure Delta-9-Tetrahydrocannabinol

#3
20250296905
2025-09-25

CARDANOL-BASED BISPHENOL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

#4
20250214958
2025-07-03

CANNABIS OIL COMPOSITIONS AND METHODS FOR PREPARATION THEREOF

#5
20250154118
2025-05-15

Compositions and Methods Related to the Simultaneous Manufacture and Purification of Flavor and Fragrance Molecules

#6
20250152646
2025-05-15

SOLVENTS, METHODS, AND SYSTEMS FOR ISOLATING CANNABINOIDS FROM PLANTS EXTRACTS OR FROM SYNTHETIC PATHWAYS

#7
20250043073
2025-02-06

COMPOSITION CONTAINING BISPHENOL, PRODUCTION METHOD FOR SAME, PRODUCTION METHOD FOR BISPHENOL A, AND PRODUCTION METHOD FOR POLYCARBONATE RESIN

#8
20250000840
2025-01-02

Process for production of essentially pure delta-9-tetrahydrocannabinol

#9
20240308944
2024-09-19

METHOD FOR THE MANUFACTURE OF BISPHENOL A

#10
20240082335
2024-03-14

PROCESSES AND SYSTEMS FOR CONVERTING CANNABINOIDS INTO CANNABINOID DERIVATIVES AND ISOLATING THE SAME

#11
20240018080
2024-01-18

SYNERGISTIC USE OF PHENOL PURIFICATION TRAIN IN PHENOL PRODUCTION UNIT FOR PROCESSING PHENOLIC WATER FROM BISPHENOL-A PRODUCTION UNIT

#12
20240010588
2024-01-11

METHOD FOR PRODUCING PHENOL

#13
20230406797
2023-12-21

PHENOL RECOVERY OF BISPHENOL-A MOTHER LIQUOR PURGE USING PURIFICATION TRAIN IN THE PHENOL PRODUCTION UNIT

#14
20230212100
2023-07-06

Systems and methods for refining cannabidiol

#15
20230149342
2023-05-18

Process for production of essentially pure delta-9-tetrahydrocannabinol

#16
20230036925
2023-02-02

Solvents, methods, and systems for isolating botanical extracts from plants

#17
20230032750
2023-02-02

Processes for converting cannabinoids into cannabinoid derivatives and recovering the same

#18
20230032547
2023-02-02

Processes and systems for converting cannabinoids into cannabinoid derivatives and isolating the same

#19
20230002340
2023-01-05

SEPARATION OF CANNABINOIDS FROM MIXTURES THEREOF BY DISTILLATION

#20
20220340538
2022-10-27

Thermal conversion of CBDA and other carboxylic cannabinoids

#21
20220296482
2022-09-22

SYNTHESIS AND PURIFICATION OF CANNABIGEROL AND ITS APPLICATION

#22
20220281791
2022-09-08

Method for decomposing phenol-based by-product

#23
20220144737
2022-05-12

SYNTHETIC CANNABIDIOL COMPOSITIONS AND METHODS OF MAKING THE SAME

#24
20220106241
2022-04-07

Method for decomposing phenolic by-products

#25
20220047963
2022-02-17

Method of decomposing by-product in phenol preparation process

#26
20210395177
2021-12-23

Method for producing a hydroxy compound by decarboxylation in the absence of a catalyst

#27
20210395176
2021-12-23

PROCESS FOR GENERATING HEMP OIL WITH A HIGH CANNABIDIOL (CBD) CONTENT

#28
20210371364
2021-12-02

PROCESS FOR THE PREPARATION OF 3,3,5-TRIMETHYLCYCLOHEXYLIDENE BISPHENOL (BP-TMC)

#29
20210261714
2021-08-26

PREPARATION OF A 2,6-DI(C1-7 ALKYL) PHENOL COMPOSITION AND A POLY(PHENYLENE ETHER)

#30
20210053899
2021-02-25

Method for separating essential oils from biomass

#31
20200407300
2020-12-31

Method and apparatus for decomposing phenolic by-product

#32
20200361841
2020-11-19

Systems and methods for refining cannabidiol

#33
20200354297
2020-11-12

Methods of Manufacturing Cannabidiol or Cannabidivarin and Intermediates of Manufacturing Cannabidiol or Cannabidivarin

#34
20200308500
2020-10-01

Hydrothermal liquefaction of lignocellulosic biomass to bio-oils with controlled molecular weights

#35
20200199056
2020-06-25

Synthetic cannabidiol compositions and methods of making the same

#36
20200122053
2020-04-23

Method of decomposing by-product in phenol preparation process

#37
20200079751
2020-03-12

Method for extracting compositions from plants

#38
20200039908
2020-02-06

Isolation of pure cannabinoids from

#39
20190352245
2019-11-21

Process for generating hemp oil with a high cannabidiol (CBD) content

#40
20190337877
2019-11-07

Methods of inhibiting polymerization of vinyl aromatic monomers

#41
20190322606
2019-10-24

Method of recovering phenol from a BPA production plant and the plant for recovering the same

#42
20190300465
2019-10-03

Method for producing alcohol compound

#43
20190299116
2019-10-03

Process and apparatus for controlling the split of liquid reflux in a divided wall column

#44
20190241536
2019-08-08

Method for extracting compositions from plants

#45
20190225567
2019-07-25

System for producing phenol and bisphenol A including removal unit for removing methanol and acetone

#46
20190099696
2019-04-04

Cannabinoid extraction process using brine

#47
20180290954
2018-10-11

Method for recovering phenol and acetone from cracking reaction product of bisphenol-A residue

#48
20180282250
2018-10-04

VACUUM DISTILLATION FOR ENRICHING CANNABIDIOL

#49
20180273457
2018-09-27

Process for making cyclohexanone

#50
20180258020
2018-09-13

Method of recovering phenol from a BPA production facility and the facility for recovering the same

#51
20180230075
2018-08-16

Method of recovering phenol from a BPA production plant and the plant for recovering the same

#52
20180179564
2018-06-28

Apparatus and methods for biosynthetic production of cannabinoids

#53
20180179132
2018-06-28

Separation of dichlorophenols

#54
20170283353
2017-10-05

Process for making cyclohexanone

#55
20170283350
2017-10-05

Methods and apparatuses for phenol fractionation in a single dividing wall column

#56
20170233778
2017-08-17

Apparatus and methods for biosynthetic production of cannabinoids

#57
20170233323
2017-08-17

Process for making cyclohexanone

#58
20170152201
2017-06-01

Process and system for making cyclohexanone

#59
20170022132
2017-01-26

Process for generating hemp oil with a high cannabidiol (CBD) content

#60
20160304425
2016-10-20

Process for purifying 2,5-dichlorophenol

#61
20160230089
2016-08-11

Composition preventing the polymerization of ethylenically unsaturated monomers and the removal thereof before polymerization

#62
20160159716
2016-06-09

Bisphenol A preparation apparatus and preparation method

#63
20150375135
2015-12-31

System and Process for Making Phenol and/or Cyclohexanone

#64
20150353459
2015-12-10

System and process for making phenol and/or cyclohexanone

#65
20150315502
2015-11-05

Process for producing a fuel and byproduct from biomass or biomass derived material

#66
20150291493
2015-10-15

Process for producing phenol

#67
20150251997
2015-09-10

Process for producing phenol

#68
20150065755
2015-03-05

Phenol purification process

#69
20150045449
2015-02-12

Method for isolating polyphenols from olive mill water

#70
20140332367
2014-11-13

Method of separation

#71
20140275630
2014-09-18

Methods and systems for separating acetone and phenol from one another

#72
20140121417
2014-05-01

Recovery of materials from a mother liquor residue

#73
20120029239
2012-02-02

Recovery of acetophenone during the production of phenol

#74
20120022297
2012-01-26

Purification method of dihydroxybenzene

#75
20110266501
2011-11-03

Method for production of a liquid composition of an ortho-dihydroxybenzene compound of high purity and said composition

#76
20110137087
2011-06-09

Method of reducing methanol in recycle streams in bisphenol-A production process

#77
20110112333
2011-05-12

BPA process improvement

#78
20100331579
2010-12-30

Dialkyl phenols

#79
20100282591
2010-11-11

Removal of hydrocarbons from an aqueous stream

#80
20100137651
2010-06-03

METHOD FOR PRODUCTION OF A LIQUID COMPOSITION OF AN ORTHO-DIHYDROXYBENZYL COMPOUND OF HIGH PURITY AND SAID COMPOSITION

#81
20100105960
2010-04-29

Process for recovering phenol from a BPA waste stream

#82
20100059359
2010-03-11

Separation and purification of hydroquinone from crude mixtures thereof

#83
20100010273
2010-01-14

Process for producing bisphenol-A

#84
20090306436
2009-12-10

Preparation of purified hydroquinone and forming of same

#85
20090281355
2009-11-12

Process for the production of cardanol

#86
20090221858
2009-09-03

Bisphenol-A plant yield enhancement

#87
20090179175
2009-07-16

METHOD FOR THE INDUSTRIAL USE OF TYROSOL AND HYDROXYTYROSOL CONTAINED IN THE SOLID BY- PRODUCTS OF INDUSTRIAL OLIVE CRUSHING

#88
20090176947
2009-07-09

Methods for preparing polymers from phenolic materials and compositions relating thereto

#89
20090048470
2009-02-19

Process for producing hydroxy compound

#90
20080281129
2008-11-13

BPA process improvement

#91
20080091051
2008-04-17

Method for preparing bisphenol A

#92
20080033126
2008-02-07

Methods for preparing polymers from phenolic materials and compositions relating thereto

#93
20070244345
2007-10-18

Process for treating phenol

#94
20060224025
2006-10-05

Process for recovering an adduct of a bis(4-hydroxyaryl)alkane and a phenolic compound

#95
20060069292
2006-03-30

Methods for purifying p,p-bisphenol-A

#96
20060014986
2006-01-19

Process for purifying bisphenol-a

#97
20060011541
2006-01-19

Process for producing bisphenol A

#98
20060004234
2006-01-05

Process for the separation of phenol from phenol-containing streams from the preparation of Bisphenol A

#99
20050240065
2005-10-27

Extraction of phenol-containing effluent streams

#100
20050215835
2005-09-29

Method for removal of acetol from phenol

#101
20050215834
2005-09-29

Method for removal of acetol from phenol

#102
20050177007
2005-08-11

Dewatering of circulatory flows in the production of bisphenol A

#103
20050137427
2005-06-23

Process for purifying phenol-containing bisphenol A

#104
20050115820
2005-06-02

Method for production of a liquid composition of an ortho-dihydroxybenzyl compound of high purity and said composition

#105
20050034970
2005-02-17

Process for the preparation of phenolic compounds, for separating phenol from cleavage product mixtures, and an apparatus