(0)C04B:0/8:
IPC6
SECTION C - CHEMISTRY; METALLURGY
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g....
C04B
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C 04

 CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES (alloys based on refractory metals C 22 C) [4]
 

Note
 

This class does not cover mechanical features provided for elsewhere, e.g. mechanical working B 28, kilns F 27.

C 04 B

 LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C 03 C 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 C 04 B 7/00 to C 04 B 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 C 04 B 26/00 or C 04 B 28/00 is also classified in groups C 04 B 14/00 to C 04 B 24/00, if a filler or active ingredient is of interest. [4]

(4)

 In groups C 04 B 26/00 to C 04 B 30/00, it is desirable to add the indexing codes relating to individual constituents. The indexing codes, which are chosen from groups C 04 B 7/00 to C 04 B 24/00, with the exception of groups C 04 B 7/13, C 04 B 7/36 to C 04 B 7/60, C 04 B 9/11 to C 04 B 9/20, C 04 B 11/02 to C 04 B 11/036, C 04 B 11/28 and C 04 B 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]

 

 

 

Lime; Magnesia; Slag
 

 2
/ 00 Lime, magnesia or dolomite (hydraulic lime cements C 04 B 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 C 04 B 7/43) [4]  

2
/ 12 • • in shaft or vertical furnaces (shaft or vertical furnaces in general F 27 B 1/00) [4]  
 

 5
/ 00 Treatment of molten slag (manufacture of slag wool C 03 B; in, or for, the production of metals C 21 B, C 22 B); Artificial stone from molten slag (mechanical aspects B 28 B 1/54) [4]

5
/ 02 • Granulating (apparatus B 01 J 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
/ 00 Hydraulic cements (calcium sulfate cements C 04 B 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 C 04 B 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 (C 04 B 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 C 04 B 7/02 to C 04 B 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 B 01 J 2/00)  

7
/ 42 • • • Active ingredients added before, or during, the burning process (after the burning process C 04 B 22/00, C 04 B 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 (C 04 B 7/47 takes precedence) [4]  

7
/ 51 • • • Hydrating [4]  

7
/ 52 • • • Grinding  

7
/ 60 • • Methods for eliminating alkali metals or compounds thereof [4]  
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