(0)C04B:7/8:
IPC6
SECTION C - CHEMISTRY; METALLURGY
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g....
C04B
8/9
<<   >>   C04B037/00 - C04B101:00  

37
/ 00 Joining burned ceramic articles with other burned ceramic articles or other articles by heating (laminated products B 32 B, E 04 C)

37
/ 02 • with metallic articles  

37
/ 04 • with articles made from glass  
 

 38
/ 00 Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C 04 B 5/06) [4,6]

Note
 

Porous mortars, concrete, artificial stone or ceramic ware characterised by the ingredients or compositions are also classified in groups C 04 B 2/00 to C 04 B 35/00. [4]

38
/ 02 • by adding chemical blowing agents [4]  

38
/ 04 • by dissolving-out added substances [4]  

38
/ 06 • by burning-out added substances [4]  

38
/ 08 • by adding porous substances [4]  

38
/ 10 • by using foaming agents (C 04 B 38/02 takes precedence) [4]  
 

 40
/ 00 Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability (active ingredients C 04 B 22/00 to C 04 B 24/00; hardening of a well-defined composition C 04 B 26/00 to C 04 B 28/00; making porous, cellular or lightening C 04 B 38/00; mechanical aspects B 28, e.g. conditioning the materials prior to shaping B 28 B 17/02) [4,6]

40
/ 02 • Selection of the hardening environment [4]  

40
/ 04 • Preventing evaporation of the mixing water (permanent coverings C 04 B 41/00) [4]  

40
/ 06 • Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers [4]  

Note
 

In group C 04 B 41/00, the following terms or expressions are used with the meanings indicated: [6]
 

-

 "mortars", "concrete" and "artificial stone" cover materials after primary shaping. [6]
 

 41
/ 00 After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone (conditioning of the materials prior to shaping C 04 B 40/00; applying liquids or other fluent materials to surfaces, in general B 05; grinding or polishing B 24; apparatus or processes for treating or working shaped articles of clay or other ceramic compositions, slag or mixtures containing cementitious material B 28 B 11/00; working stone or stone-like materials B 28 D; glazes, other than cold glazes, C 03 C 8/00; etching, surface-brightening or pickling compositions C 09 K 13/00) [3]

Notes

(1)

 In groups C 04 B 41/45 to C 04 B 41/91, in the absence of an indication to the contrary, classification is made in the last appropriate place. [4]

(2)

 Treating, e.g. coating or impregnating, a material with the same material or with a substance which ultimately is transformed into the same material is not considered after-treatment for this group but is classified as preparation of the material, e.g. a carbon body impregnated with a carbonisable substance is classified in C 04 B 35/52. [4]

41
/ 45 • Coating or impregnating (paints C 09 D) [4]  

41
/ 46 • • with organic materials [4]  

41
/ 47 • • • Oils, fats or waxes [4]  

41
/ 48 • • • Macromolecular compounds [4]  

41
/ 49 • • • Compounds having one or more carbon-to-metal or carbon-to-silicon linkages [4]  

41
/ 50 • • with inorganic materials [4]  

41
/ 51 • • • Metallising [4]  

41
/ 52 • • Multiple coating or impregnating [4]  

41
/ 53 • involving the removal of part of the materials of the treated article [4]  

41
/ 60 • of only artificial stone [4]  

41
/ 61 • • Coating or impregnating [4]  

41
/ 62 • • • with organic materials [4]  

41
/ 63 • • • • Macromolecular compounds [4]  

41
/ 64 • • • • Compounds having one or more carbon-to-metal or carbon-to-silicon linkages [4]  

41
/ 65 • • • with inorganic materials [4]  

41
/ 66 • • • • Fluorides, e.g. ocratation [4]  

41
/ 67 • • • • Phosphates [4]  

41
/ 68 • • • • Silicic acid; Silicates [4]  

41
/ 69 • • • • Metals [4]  

41
/ 70 • • • for obtaining at least two superposed coatings having different compositions [4]  

41
/ 71 • • • • at least one coating being an organic material [4]  

41
/ 72 • • involving the removal of part of the materials of the treated articles, e.g. etching [4]  

41
/ 80 • of only ceramics [4]  

41
/ 81 • • Coating or impregnating [4]  

41
/ 82 • • • with organic materials [4]  

41
/ 83 • • • • Macromolecular compounds [4]  

41
/ 84 • • • • Compounds having one or more carbon-to-metal or carbon-to-silicon linkages [4]  

41
/ 85 • • • with inorganic materials [4]  

41
/ 86 • • • • Glazes; Cold glazes [4]  

41
/ 87 • • • • Ceramics [4]  

41
/ 88 • • • • Metals [4]  

41
/ 89 • • • for obtaining at least two superposed coatings having different compositions [4]  

41
/ 90 • • • • at least one coating being a metal [4]  

41
/ 91 • • involving the removal of part of the materials of the treated articles, e.g. etching [4]  

Indexing scheme associated with group C 04 B 35/00, relating to high critical-temperature superconductive ceramics. The indexing code should be unlinked. [6]

Note
 

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]
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