ClassID:

91820

C07C53/12 - CPC Classification

Classification description:

Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen Acetic anhydride

Recent Application in this class:
#1
20250352972
2025-11-20

HIGHLY ACCURATE DE NOVO POLYNUCLEOTIDE SYNTHESIS

#2
20210171428
2021-06-10

METHOD FOR PRODUCING KETENE DERIVATIVE

#3
20200222875
2020-07-16

HIGHLY ACCURATE DE NOVO POLYNUCLEOTIDE SYNTHESIS

#4
20190055184
2019-02-21

Processes for purifying acetic acid and hydrating anhydride

#5
20180141890
2018-05-24

Processes for purifying acetic acid and hydrating anhydride

#6
20140066653
2014-03-06

Processes for purifying acetic anhydride

#7
20130197267
2013-08-01

Processes for preparing acetic anhydride

#8
20130137903
2013-05-30

INTEGRATED PROCESS FOR PRODUCING POLYVINYL ALCOHOL OR A COPOLYMER THEREOF AND ETHANOL

#9
20120273338
2012-11-01

Process for removing water from alcohol mixtures

#10
20120123156
2012-05-17

Coproduction of acetic acid and acetic anhydride

#11
20120053366
2012-03-01

Process for producing carboxylic acid anhydrides

#12
20110269992
2011-11-03

Preparation of acetic acid and acetic anhydride

#13
20110091360
2011-04-21

High shear system and process for the production of acetic anhydride

#14
20110021816
2011-01-27

Acetic anhydride production by way of carbonylation with enhanced reaction and flashing

#15
20090299092
2009-12-03

Carbonylation process

#16
20090275774
2009-11-05

Process for the preparation of carboxylic acids and/or derivatives thereof

#17
20090247783
2009-10-01

CARBONYLATION PROCESS

#18
20090177007
2009-07-09

Process for producing carboxylic acid anhydrides

#19
20090005585
2009-01-01

High shear system and process for the production of acetic anhydride

#20
20080234512
2008-09-25

Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream

#21
20080221352
2008-09-11

Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream

#22
20070293695
2007-12-20

Carbonylation process

#23
20070287862
2007-12-13

Production of acetic acid and mixtures of acetic acid and acetic anhydride

#24
20070197822
2007-08-23

Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream

#25
20070191625
2007-08-16

Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream

#26
20060052631
2006-03-09

Flexible method for the joint production of (i) formic acid, (ii) a carboxylic acid comprising at least two carbon atoms and/or the derivatives thereof, and (iii) a carboxylic acid anhydride

#27
20060041162
2006-02-23

Acetic anhydride and acetate ester co-production