ClassID:

90975

C07C21/20 - CPC Classification

Classification description:

Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds; Halogenated dienes Halogenated butadienes

Sub-classes:
Recent Application in this class:
#1
20220084835
2022-03-17

PLASMA ETCHING METHOD AND PLASMA ETCHING APPARATUS

#2
20210163382
2021-06-03

Production method for hexafluoro-1,3-butadiene

#3
20210061735
2021-03-04

Method of producing compound having butadiene skeleton containing hydrogen and fluorine and/or chlorine

#4
20210040021
2021-02-11

Method for producing hexafluoro-1,3-butadiene

#5
20200247735
2020-08-06

Method for producing hexafluorobutadiene

#6
20190112244
2019-04-18

Method for preparing hexafluorobutadiene

#7
20190112243
2019-04-18

Method for preparing polyunsaturated perfluorinated compounds

#8
20110313216
2011-12-22

PROCESS FOR PRODUCTION OF 2,3-DICHLOROBUTADIENE-1,3

#9
20100280291
2010-11-04

Process for the synthesis of perfluorobutadiene

#10
20100273326
2010-10-28

METHOD FOR PURIFYING UNSATURATED FLUOROCARBON COMPOUND, METHOD FOR FORMING FLUOROCARBON FILM, AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE

#11
20100191024
2010-07-29

Preparation of halogen and hydrogen containing alkenes over metal fluoride catalysts

#12
20090216053
2009-08-27

Process for producing hexafluoro-1,3-butadiene

#13
20090163746
2009-06-25

Process for production of 2,3-dichlorobutadiene-1,3

#14
20090163745
2009-06-25

Process for production of 2,3-dichlorobutadiene-1,3

#15
20080300432
2008-12-04

Chemical Production Processes and Systems

#16
20070299287
2007-12-27

Chemical production processes and systems

#17
20060281955
2006-12-14

Fluorobutene derivatives and process for producing same

#18
20060252968
2006-11-09

Dehalogenation process

#19
20060205986
2006-09-14

Fluorobutene derivatives and process for producing same

#20
20050119512
2005-06-02

Fluorobutene derivatives and process for producing same