ClassID:

94958

C07D307/08 - CPC Classification

Classification description:

Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms Preparation of tetrahydrofuran

Recent Application in this class:
#1
20240317697
2024-09-26

OXYGENATED HYDROCARBON PRODUCTION SYSTEM WITH ACIDIC IMPURITY REMOVAL RESIN COLUMN

#2
20240287011
2024-08-29

METHOD FOR PRODUCING TETRAHYDROFURAN, GAMMA-BUTYROLACTONE, OR 1,4-BUTANEDIOL

#3
20240262772
2024-08-08

A SOLVENT DRYING SOLUTION AND PROCESSES THERFOR

#4
20220340536
2022-10-27

Single step process for production of 2-methyltetrahydrofuran from furfuryl alcohol

#5
20210221782
2021-07-22

METHOD FOR PRODUCING 2,5-BIS(AMINOMETHYL)TETRAHYDROFURAN

#6
20210061780
2021-03-04

Methods for producing tetrahydrofuran

#7
20200404911
2020-12-31

Nematocidal heterocyclic amides

#8
20200399722
2020-12-24

CO-SOLVENT TO PRODUCE REACTIVE INTERMEDIATES FROM BIOMASS

#9
20200376477
2020-12-03

METHOD FOR PREPARING A CATALYST AND METHOD FOR PRODUCING 1,4-BUTANEDIOL AND/OR TETRAHYDROFURAN FROM FURAN

#10
20200376468
2020-12-03

METHOD FOR PREPARING A CATALYST AND METHOD FOR PRODUCING 1,4-BUTANEDIOL AND/OR TETRAHYDROFURAN FROM FURAN

#11
20200298199
2020-09-24

Flexible chemical production method

#12
20200290983
2020-09-17

Method for producing cyclic ether

#13
20200071286
2020-03-05

UTILIZATION OF NORMAL CARBON 4 (NC4) RECYCLE STREAM FOR SECONDARY AND TERTIARY PRODUCTS

#14
20200010440
2020-01-09

CONVERSION OF BIOMASS

#15
20190376095
2019-12-12

Microorganisms for the production of 1,4- butanediol and related methods

#16
20190300491
2019-10-03

Salt of quinazoline derivative, preparation method therefor and application thereof

#17
20190202767
2019-07-04

Purification methods

#18
20190084951
2019-03-21

Conversion of biomass

#19
20190077740
2019-03-14

Levulinic acid compositions

#20
20190031581
2019-01-31

Method for separating materials by means of an extractive distillation process

#21
20190014779
2019-01-17

Nematocidal heterocyclic amides

#22
20190002381
2019-01-03

Hydrogenation of oxygenated molecules from biomass refining

#23
20180282248
2018-10-04

Process for the production of 1,4-butanediol and tetrahydrofuran from furan

#24
20180251438
2018-09-06

Process for the production of 1,4-butanediol and tetrahydrofuran from furan

#25
20180186760
2018-07-05

PROCESS FOR THE PRODUCTION OF 1,4-BUTANEDIOL AND TETRAHYDROFURAN FROM FURAN

#26
20180072692
2018-03-15

Process for the production of 1,4-butanediol and tetrahydrofuran from furan

#27
20180029005
2018-02-01

FLEXIBLE CHEMICAL PRODUCTION PLATFORM

#28
20180002303
2018-01-04

Method for producing tetrahydrofurane, 1,4-butanediol or gamma-butyrolactone

#29
20170320842
2017-11-09

Process for the production of 1,4-butanediol and tetrahydrofuran from furan

#30
20170066736
2017-03-09

Conversion of biomass

#31
20170044086
2017-02-16

Biofuels production from bio-derived carboxylic-acid esters

#32
20160264500
2016-09-15

1,4-butanediol-containing composition

#33
20160214952
2016-07-28

IMPROVED PROCESS FOR MANUFACTURE OF TETRAHYDROFURAN

#34
20160159762
2016-06-09

PROCESS FOR PRODUCING FURAN FROM FURFURAL FROM BIOMASS

#35
20160108330
2016-04-21

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#36
20160107966
2016-04-21

Process for the separation of 1,4-butanediol and co-products

#37
20160076112
2016-03-17

Co-solvent to produce reactive intermediates from biomass

#38
20150368574
2015-12-24

BIOFUELS PRODUCTION FROM BIO-DERIVED CARBOXYLIC-ACID ESTERS

#39
20150368216
2015-12-24

Single step process for conversion of furfural to tetrahydrofuran

#40
20150353854
2015-12-10

SYNTHESIS OF FUELS AND CHEMICALS FROM SUGARS

#41
20150322026
2015-11-12

Hydrogenation products from biologically-derived carboxylic-acid esters

#42
20150299153
2015-10-22

Continuous Processing Method of 2-methyltetrahydrofuran

#43
20150231607
2015-08-20

Catalyst for tetrahydrofuran synthesis

#44
20150218117
2015-08-06

Method for producing tetrahydrofuran

#45
20150183701
2015-07-02

Catalysts for hydrodeoxygenation of oxygenated hydrocarbons

#46
20150166497
2015-06-18

CONTROLLED PARTIAL DEPOLYMERIZATION PROCESS FOR POLYTETRAMETHYLENE ETHER GLYCOL MOLECULAR WEIGHT DISTRIBUTION NARROWING

#47
20150141667
2015-05-21

Catalysts for hydrodeoxygenation of oxygenated hydrocarbons

#48
20150140616
2015-05-21

PROCESS FOR MAKING FURFURAL

#49
20150105568
2015-04-16

Catalyst for tetrahydrofuran synthesis

#50
20150031902
2015-01-29

Process for the preparation of dronedarone by oxidation of a sulphenyl group

#51
20140316146
2014-10-23

Process for producing 1,4-butanediol by hydrogenating dialkyl maleate in mixed liquid/vapor phase

#52
20140296466
2014-10-02

Method for producing bio-based homoserine lactone and bio-based organic acid from O-acyl homoserine produced by microorganisms

#53
20140187740
2014-07-03

1,4-butanediol-containing composition

#54
20140179935
2014-06-26

Method for producing tetrahydrofuran

#55
20140121390
2014-05-01

Method for producing tetrahydrofuran

#56
20140051872
2014-02-20

Catalysts for hydrodeoxygenation of oxygenated hydrocarbons

#57
20140011248
2014-01-09

Conversion of biomass

#58
20130296585
2013-11-07

Catalyst For Tetrahydrofuran Synthesis

#59
20130072714
2013-03-21

BIOBASED COMPOSITIONS OF DIAMMONIUM SUCCINATE, MONOAMMONIUM SUCCINATE AND/OR SUCCINIC ACID AND DERIVATIVES THEREOF

#60
20130053583
2013-02-28

Depolymerization of oligomeric cyclic ethers

#61
20120225463
2012-09-06

Microorganisms for the production of 1,4-butanediol and related methods

#62
20120215014
2012-08-23

PROCESSES FOR THE PRODUCTION OF HYDROGENATED PRODUCTS

#63
20120215012
2012-08-23

PROCESS AND SYSTEM FOR PURIFICATION OF TETRAHYDROFURAN

#64
20120197029
2012-08-02

Method for producing cyclicised compounds from organic acids having from 4 to 6 carbon atoms

#65
20120178948
2012-07-12

PROCESS FOR THE HYDROGENATION OF 1,4-BUTYNEDIOL TO TETRAHYDROFURAN IN THE GAS PHASE

#66
20120178947
2012-07-12

PROCESS FOR HYDROGENATING 1,4-BUTYNEDIOL TO GIVE MIXTURES COMPRISING TETRAHYDROFURAN, 1,4-BUTANEDIOL AND GAMMA-BUTYROLACTONE IN THE GAS PHASE

#67
20120095241
2012-04-19

Processes for the production of hydrogenated products

#68
20120035378
2012-02-09

Hydrogenation process for the preparation of tetrahydrofuran and alkylated derivatives thereof

#69
20110306777
2011-12-15

Processes for the production of hydrogenated products

#70
20110301364
2011-12-08

Processes for the production of hydrogenated products

#71
20110257448
2011-10-20

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#72
20110257416
2011-10-20

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#73
20110245543
2011-10-06

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#74
20110245542
2011-10-06

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#75
20110245517
2011-10-06

PROCESS FOR PREPARING TETRAHYDROFURAN

#76
20110245515
2011-10-06

Processes for the production of hydrogenated products

#77
20110245514
2011-10-06

Processes for the production of hydrogenated products

#78
20110092721
2011-04-21

Process

#79
20110045575
2011-02-24

Microorganisms for the production of 1,4-butanediol and related methods

#80
20100099895
2010-04-22

PROCESS FOR ONE-STAGE PREPARATION OF 2-METHYLTETRAHYDROFURAN FROM FURFURAL OVER A CATALYST

#81
20090137825
2009-05-28

Method of producing a carboxylic alkyl ester

#82
20090124839
2009-05-14

Production of liquid alkanes in the jet fuel range (C8-C15) from biomass-derived carbohydrates

#83
20080300435
2008-12-04

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#84
20080300434
2008-12-04

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#85
20080216391
2008-09-11

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons

#86
20080161585
2008-07-03

Production of tetrahydrofuran from 1,4-butanediol

#87
20080097112
2008-04-24

Selective preparation of tetrahydrofuran by hydrogenation of maleic anhydride

#88
20080058539
2008-03-06

Method for the distillative processing of tetrahydrofuran

#89
20080033188
2008-02-07

Catalytic process for producing furan derivatives in a biphasic reactor

#90
20070142679
2007-06-21

Homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides thereof

#91
20070135650
2007-06-14

Method for the production of defined mixtures of THF, BDO and GBL by gas phase hydrogenation

#92
20070088169
2007-04-19

Process for the production of ethers

#93
20060122365
2006-06-08

Method for producing tetrahydrofuran

#94
20060052239
2006-03-09

Catalyst and hydrogenation of carbonyl compounds in the liquid phase using the catalyst

#95
20060036103
2006-02-16

Process for preparing a deuterated or tritiated compound

#96
20060004212
2006-01-05

Catalysts for maleic acid hydrogenation to 1,4-butanediol

#97
20050258025
2005-11-24

Method for purifying tetrahydrofuran by distillation

#98
20050119494
2005-06-02

Method for the simultaneous production of tetrahydrofurans and pyrrolidones

#99
13714223
2016-01-05

Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons