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IPC 7
 
C04-C04B01448
  C04B 16/00 - C04B 28/36  

SECTION C – CHEMISTRY; METALLURGY


C 04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES (alloys based on refractory metals C22C) [4]


C 04 BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C03C 10/00); REFRACTORIES; TREATMENT OF NATURAL STONE  [4]


Notes

(1)In this subclass, the following terms or expressions are used with the meanings indicated:  [6]

 "fillers" includes pigments, aggregates and fibrous reinforcing materials;  [6]

 "active ingredients" includes processing aids or property improvers, e.g. grinding aids used after the burning process or used in the absence of a burning process;  [6]

 "mortars", "concrete" and "artificial stone" are to be considered as a single group of materials, and therefore, in the absence of an indication to be contrary, they include mortar, concrete and other cementitious compositions.  [6]

(2)In groups C04B 7/00 to C04B 32/00, in the absence of an indication to the contrary, classification is made in the last appropriate place.  [4]

(3)A composition classified in groups C04B 26/00 or C04B 28/00 is also classified in groups C04B 14/00 to C04B 24/00, if a filler or active ingredient is of interest.  [4]

(4)In groups C04B 26/00 to C04B 30/00, it is desirable to add the indexing codes relating to individual constituents. The indexing codes, which are chosen from groups C04B 7/00 to C04B 24/00, with the exception of groups C04B 7/13, C04B 7/36 to C04B 7/60, C04B 9/11 to C04B 9/20, C04B 11/02 to C04B 11/036, C04B 11/28 and C04B 11/30, have the same numbers as the classification symbols, but a colon is used instead of the oblique stroke, and should be linked.  [4]

(5)Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code.  [6]


Subclass Index

LIME, MAGNESIA; SLAG 

C04B 2/00; C04B 5/00 

CEMENTS 

C04B 7/00 to C04B 12/00 

MORTARS; CONCRETE; ARTIFICIAL STONE 

Compositions 

C04B 26/00 to C04B 32/00 

Fillers 

C04B 14/00 to C04B 20/00 

Active ingredients 

C04B 22/00, C04B 24/00 

Porous products 

C04B 38/00 

Influencing or modifying the properties of mortars 

C04B 40/00 

After-treatment 

C04B 41/00 

CERAMICS 

Clay-wares 

C04B 33/00 

Other ceramics 

C04B 35/00 

Joining 

C04B 37/00 

Porous products 

C04B 38/00 

After-treatment 

C04B 41/00 

TREATMENT OF NATURAL STONE 

C04B 41/00 



Lime; Magnesia; Slag


2/

00Lime, magnesia or dolomite (hydraulic lime cements C04B 7/34) [4]

2/

02.Lime  [4]

2/

04..Slaking  [4]

2/

06...with addition of substances, e.g. hydrophobic agents  [4]

2/

08...Devices therefor  [4]

2/

10.Preheating, burning, calcining or cooling (decarbonation during burning of cement raw materials C04B 7/43)  [4]

2/

12..in shaft or vertical furnaces (shaft or vertical furnaces in general F27B 1/00)  [4]


5/

00Treatment of molten slag (manufacture of slag wool C03B; in, or for, the production of metals C21B, C22B); Artificial stone from molten slag (mechanical aspects B28B 1/54) [4]

5/

02.Granulating (apparatus B01J 2/00); Dehydrating; Drying

5/

06.Ingredients, other than water, added to the molten slag; Treatment with gases or gas generating material, e.g. to obtain porous slag  [4]


Cements


7/

00Hydraulic cements (calcium sulfate cements C04B 11/00)

7/

02.Portland cement

7/

04..using raw materials containing gypsum

7/

06..using alkaline raw materials

7/

12.Natural pozzuolanas; Natural pozzuolana cements (cements containing slag C04B 7/14)  [4]

7/

13..Mixtures thereof with inorganic cementitious materials, e.g. Portland cements  [4]

7/

14.Cements containing slag

7/

147..Metallurgical slag  [4]

7/

153...Mixtures thereof with other inorganic cementitious materials or other activators  [4]

7/

17....with calcium oxide containing activators  [4]

7/

19.....Portland cements  [4]

7/

21....with calcium sulfate containing activators  [4]

7/

22.Iron ore cements

7/

24.Cements from oil shales, residues or waste other than slag  [4]

7/

26..from raw materials containing flue dust

7/

28..from combustion residues (C04B 7/26 takes precedence)  [4]

7/

30..from oil shale; from oil shale residues  [4]

7/

32.Aluminous cements

7/

34.Hydraulic lime cements; Roman cements

7/

345.Hydraulic cements not provided for in one of the groups C04B 7/02 to C04B 7/34  [4]

7/

36.Manufacture of hydraulic cements in general

7/

38..Preparing or treating the raw materials individually or as batches  [4]

7/

40...Dehydrating; Forming, e.g. granulating (apparatus for granulating B01J 2/00)

7/

42...Active ingredients added before, or during, the burning process (after the burning process C04B 22/00, C04B 24/00)

7/

43..Heat treatment, e.g. precalcining, burning, melting; Cooling  [4]

7/

44...Burning; Melting  [4]

7/

45....in fluidised beds  [4]

7/

46....electric  [4]

7/

47...Cooling  [4]

7/

48..Clinker treatment (C04B 7/47 takes precedence)  [4]

7/

51...Hydrating  [4]

7/

52...Grinding

7/

60..Methods for eliminating alkali metals or compounds thereof  [4]


9/

00Magnesium cements or silimar cements

9/

02.Magnesium cements containing chlorides, e.g. Sorel cement

9/

04.Magnesium cements containing sulfates, nitrates, phosphates, or fluorides

9/

06.Cements containing metal compounds other than magnesium compounds, e.g. compounds of zinc or lead

9/

11.Mixtures thereof with other inorganic cementitious materials  [4]

9/

12..with hydraulic cements, e.g. Portland cements  [4]

9/

20.Manufacture, e.g. preparing the batches (preheating, burning, calcining or cooling lime stone, magnesite or dolomite C04B 2/10)


11/

00Calcium sulfate cements

11/

02.Dehydrating gypsum

11/

024..Ingredients added before, or during, the calcining process, e.g. calcination modifiers  [4]

11/

028..Devices therefor  [4]

11/

032...for the wet process, e.g. dehydrating in solution or under saturated vapor conditions  [4]

11/

036...for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln  [4]

11/

05.obtaining anhydrite (C04B 11/028 takes precedence)  [4]

11/

06.starting from anhydrite

11/

26.starting from phosphogypsum or from waste, e.g. purification products of smoke (C04B 11/02 takes precedence; chemical or biological purification of waste gases B01D 53/34)  [4]

11/

28.Mixtures thereof with other inorganic cementitious materials (C04B 7/04, C04B 7/153 take precedence)  [4]

11/

30..with hydraulic cements, e.g. Portland cements  [4]


12/

00Cements not provided for in groups C04B 7/00 to C04B 11/00  [4]

12/

02.Phosphate cements (in, or for, the manufacture of ceramics C04B 33/00, C04B 35/00)  [4]

12/

04.Alkali metal or ammonium silicate cements (alkali metal silicates per se, their preparation C01B 33/32; ammonium silicates per se, their preparation C01C 1/00)  [4]


Use of materials as fillers (ceramics C04B 33/00, C04B 35/00; reinforcing elements for building materials E04C 5/00)  [4]


14/

00Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone (expanding or defibrillating materials C04B 20/00) [4]

14/

02.Granular materials  [4]

14/

04..Silica-rich materials; Silicates  [4]

14/

06...Quartz; Sand  [4]

14/

08...Diatomaceous earth  [4]

14/

10...Clay  [4]

14/

12....Expanded clay  [4]

14/

14...Minerals of vulcanic origin  [4]

14/

16....porous, e.g. pumice  [4]

14/

18....Perlite  [4]

14/

20...Mica; Vermiculite  [4]

14/

22...Glass  [4]

14/

24....porous, e.g. foamed glass  [4]

14/

26..Carbonates  [4]

14/

28...of calcium  [4]

14/

30..Oxides other than silica  [4]

14/

32..Carbides; Nitrides; Borides  [4]

14/

34..Metals  [4]

14/

36..Inorganic materials not provided for in groups C04B 14/04 to C04B 14/34  [4]

14/

38.Fibrous materials; Whiskers  [4]

14/

40..Asbestos  [4]

14/

42..Glass  [4]

14/

44...Treatment for enhancing alkali resistance  [4]

14/

46..Rock wool  [4]

14/

48..Metal  [4]

   C04B 16/00 - C04B 28/36  
 

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