ClassID:

89469

C04B2103/0035 - CPC Classification

Classification description:

Function or property of ingredients for mortars, concrete or artificial stone; Standardised cement types according to API Type G

Recent Application in this class:
#1
20250361435
2025-11-27

CEMENTITIOUS MIXTURE FOR CEMENTING A WELLBORE

#2
20230174844
2023-06-08

Fluid loss control additive

#3
20220212989
2022-07-07

In-situ polyphosphazene generation in cement for improved elastic properties

#4
20190241792
2019-08-08

High temperature resistant Portland cement slurry and production method thereof

#5
20190010378
2019-01-10

Overcoming the retardation of cement hydration from dispersing agents used in suspension of additives

#6
20180065891
2018-03-08

CARBON DIOXIDE-RESISTANT PORTLAND BASED CEMENT COMPOSITION

#7
20170349805
2017-12-07

APPLICATION OF GROUND EXPANDING AGENTS IN CEMENT

#8
20170240469
2017-08-24

Nanoclay-enhanced cement composition for deep well treatment

#9
20170002256
2017-01-05

Chitin nanocrystal containing wellbore fluids

#10
20160177663
2016-06-23

Nanoclay as an additive for high pressure and high temperature well cementing

#11
20160115365
2016-04-28

Methods for maintaining zonal isolation in a subterranean well

#12
20150175870
2015-06-25

Cement compositions containing metaphosphate and methods of use

#13
20140102704
2014-04-17

Cement compositions containing metphosphate and methods of use

#14
20140000490
2014-01-02

Catalyst composition which is intended for use with pozzolan compositions

#15
20130048284
2013-02-28

Carbon dioxide-resistant Portland based cement composition

#16
20120322912
2012-12-20

Drag Reducer for Cement Compositions

#17
20120210911
2012-08-23

Stable organic-based fluid loss additive containing an organophilic clay-based suspending agent for use in a well

#18
20120192768
2012-08-02

Lost circulation compositions and associated methods

#19
20110297377
2011-12-08

Stable organic-based fluid loss additive containing an organophilic clay-based suspending agent for use in a well

#20
20110162845
2011-07-07

Lost circulation compositions and associated methods

#21
20100249269
2010-09-30

DRAG REDUCER FOR CEMENT COMPOSITIONS

#22
20100155068
2010-06-24

Cement retarder systems, and retarded cement compositions

#23
20100065273
2010-03-18

Methods and materials for zonal isolation

#24
20100010108
2010-01-14

Well cementing material

#25
20090277635
2009-11-12

Method of well treatment and construction

#26
20090241803
2009-10-01

Oil and gas well cement systems using elemental sulfur

#27
20060185561
2006-08-24

Methods of cementing in subterranean zones and cementing compositions therefor

#28
20060169175
2006-08-03

Cement composition for use with a formate-based drilling fluid comprising an alkaline buffering agent

#29
20060075932
2006-04-13

Well cementing material

#30
20060021751
2006-02-02

Methods of cementing and cement compositions containing a polymeric cement cohesion additive

#31
20060005966
2006-01-12

Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry

#32
20050204960
2005-09-22

Methods and compositions for compensating for cement hydration volume reduction

#33
20050194190
2005-09-08

Method for accelerating oil well construction and production processes and heating device therefor

#34
20050009710
2005-01-13

Reactive sealing compositions for sealing hydrocarbon containing subterranean formations and methods