IPC 6 English version  C04B03000-C04B03584
 << C04B 16/00 - C04B 28/36     C04B 37/00 - C04B 111:94 >> 
SECTION C– CHEMISTRY; METALLURGY

C 04

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

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]

30/

00

Compositions for artificial stone, not containing binders [4]

30/

02

. 

containing fibrous materials [4]

32/

00

Artificial stone not provided for in other groups of this subclass [4]

32/

02

. 

with reinforcements [4]
Ceramics

33/

00

Clay-wares (monolithic refractories or refractory mortars C 04 B 35/66; porous products C 04 B 38/00) [2]

33/

02

. 

Preparing or treating the raw materials individually or as batches

33/

04

. . 

Clay; Kaolin

33/

06

. . . 

Rendering lime harmless

33/

08

. . . . 

Preventing efflorescence

33/

10

. . 

Eliminating iron or lime

33/

13

. . 

Compounding ingredients (C 04 B 33/36, C 04 B 35/71 take precedence) [2]

33/

14

. . . 

Colouring matters

33/

16

. . . 

Lean materials, e.g. grog, quartz

33/

18

. . . 

for liquefying the batches

33/

20

. . 

for dry-pressing (C 04 B 33/13 takes precedence)

33/

22

. 

Grog products

33/

24

. 

Manufacture of porcelain or white ware

33/

26

. . 

of porcelain for electrical insulation

33/

28

. 

Slip casting (mechanical features B 28 B 1/26)

33/

30

. 

Drying methods

33/

32

. 

Burning methods

33/

34

. . 

combined with glazing

33/

36

. 

Reinforced clay-wares [2]

35/

00

Shaped ceramic products characterised by their composition (porous products C 04 B 38/00; articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B 22 D 41/02); Ceramic compositions (containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides or sulfides, other than as macroscopic reinforcing agents C 22 C); Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products (chemical preparation of powders of inorganic compounds C 01) [4]

Notes

(1)

In this group, in the absence of an indication to the contrary, compositions are classified according to the constituent present in the highest proportion by weight. [3]

(2)

In this group, magnesium is considered as an alkaline earth metal. [6]

(3)

In this group, a composite is considered as a sintered mixture of different powdered materials, other than sintering aids, the materials being present as separate phases in the sintered product. [6]

(4)

In this group, fine ceramics are considered as products having a polycrystalline fine-grained microstructure, e.g. of dimensions below 100 micrometers. [6]

(5)

The production of ceramic powder is classified in this group in so far as it relates to the preparation of powder with specific characteristics. [6]

(6)

In this group, it is desirable to add the indexing code of group C 04 B 101:00. The indexing code should be unlinked. [6]

35/

01

. 

based on oxides [6]

35/

02

(transferred to C 04 B 35/03)

35/

03

. . 

based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite [6]

35/

035

. . . 

Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon [6]

35/

04

. . . 

based on magnesium oxide [6]

35/

043

. . . . 

Refractories from grain sized mixtures [6]

35/

047

. . . . . 

containing chromium oxide or chrome ore [6]

35/

05

. . . . 

Refractories by fusion casting [6]

35/

053

. . . . 

Fine ceramics [6]

35/

057

. . . 

based on calcium oxide [6]

35/

06

. . . 

based on oxide mixtures derived from dolomite

35/

08

. . 

based on beryllium oxide [6]

35/

10

. . 

based on aluminium oxide [6]

35/

101

. . . 

Refractories from grain sized mixtures [6]

35/

103

. . . . 

containing non-oxide refractory materials, e.g. carbon (C 04 B 35/106 takes precedence) [6]

35/

105

. . . . 

containing chromium oxide or chrome ore [6]

35/

106

. . . . 

containing zirconium oxide or zircon (ZrSiO4) [6]

35/

107

. . . 

Refractories by fusion casting [6]

35/

109

. . . . 

containing zirconium oxide or zircon (ZrSiO4) [6]

35/

111

. . . 

Fine ceramics [6]

35/

113

. . . . 

based on beta-aluminium oxide [6]

35/

115

. . . . 

Translucent or transparent products [6]

35/

117

. . . . 

Composites [6]

35/

119

. . . . . 

with zirconium oxide [6]

35/

12

. . 

based on chromium oxide (C 04 B 35/047, C 04 B 35/105 take precedence) [6]

35/

14

. . 

based on silica [6]

35/

16

. . 

based on silicates other than clay [6]

35/

18

. . . 

rich in aluminium oxide [6]

35/

185

. . . . 

Mullite [6]

35/

19

. . . . 

Alkali metal aluminosilicates, e.g. spodumene [6]

35/

195

. . . . 

Alkaline earth aluminosilicates, e.g. cordierite [6]

35/

20

. . . 

rich in magnesium oxide [6]

35/

22

. . . 

rich in calcium oxide [6]

35/

26

. . 

based on ferrites [2,6]

35/

28

. . . 

with nickel oxide as the principal oxide [2,6]

35/

30

. . . . 

with zinc oxide [2,6]

35/

32

. . . 

with cobalt oxide as the principal oxide [2,6]

35/

34

. . . . 

with zinc oxide [2,6]

35/

36

. . . 

with manganese oxide as the principal oxide [2,6]

35/

38

. . . . 

with zinc oxide [2,6]

35/

40

. . . 

with rare earth oxide [2,6]

35/

42

. . 

based on chromites (C 04 B 35/047, C 04 B 35/105 take precedence) [2,6]

35/

44

. . 

based on aluminates [2,6]

35/

443

. . . 

Magnesium aluminate spinel [6]

35/

447

. . 

based on phosphates [6]

35/

45

. . 

based on copper oxide or solid solutions thereof with other oxides [6]

35/

453

. . 

based on zinc, tin or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates [6]

35/

457

. . . 

based on tin oxides or stannates [6]

35/

46

. . 

based on titanium oxides or titanates (containing also zirconium or hafnium oxides, zirconates or hafnates C 04 B 35/49) [6]

35/

462

. . . 

based on titanates [6]

35/

465

. . . . 

based on alkaline earth metal titanates [6]

35/

468

. . . . . 

based on barium titanates [6]

35/

47

. . . . . 

based on strontium titanates [6]

35/

472

. . . . 

based on lead titanates [6]

35/

475

. . . . 

based on bismuth titanates [6]

35/

478

. . . . 

based on aluminium titanates [6]

35/

48

. . 

based on zirconium or hafnium oxides or zirconates or hafnates [6]

35/

482

. . . 

Refractories from grain sized mixtures [6]

35/

484

. . . 

Refractories by fusion casting [6]

35/

486

. . . 

Fine ceramics [6]

35/

488

. . . . 

Composites [6]

35/

49

. . . 

containing also titanium oxide or titanates [3,6]

35/

491

. . . . 

based on lead zirconates and lead titanates [6]

35/

493

. . . . . 

containing also other lead compounds [6]

35/

495

. . 

based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates [6]

35/

497

. . . 

based on solid solutions with lead oxide [6]

35/

499

. . . . 

containing also titanates [6]

35/

50

. 

based on rare earth compounds

35/

505

. . 

based on yttrium oxide [6]

35/

51

. 

based on compounds of actinides (nuclear fuel materials G 21 C 3/62) [2]

35/

515

. 

based on non-oxides (C 04 B 35/50, C 04 B 35/51 take precedence) [6]

35/

52

. . 

based on carbon, e.g. graphite [6]

35/

524

. . . 

obtained from polymer precursors, e.g. glass-like carbon material [6]

35/

528

. . . 

obtained from carbonaceous particles with or without other non-organic components [6]

35/

532

. . . . 

containing a carbonisable binder [6]

35/

536

. . . 

based on expanded graphite [6]

35/

54

(transferred to C 04 B 35/52)

35/

547

. . 

based on sulfides or selenides [6]

35/

553

. . 

based on fluorides [6]

35/

56

. . 

based on carbides [4]

35/

563

. . . 

based on boron carbide [6]

35/

565

. . . 

based on silicon carbide [6]

35/

567

. . . . 

Refractories from grain sized mixtures [6]

35/

569

. . . . 

Fine ceramics [6]

35/

571

. . . . . 

obtained from polymer precursors [6]

35/

573

. . . . . 

obtained by reaction sintering [6]

35/

575

. . . . . 

obtained by pressure sintering [6]

35/

576

. . . . . 

obtained by sintering without pressure [6]

35/

577

. . . . . 

Composites [6]

35/

58

. . 

based on borides, nitrides or silicides [4,6]

35/

581

. . . 

based on aluminium nitride [6]

35/

582

. . . . 

Composites [6]

35/

583

. . . 

based on boron nitride [6]

35/

5831

. . . . 

based on cubic boron nitride [6]

35/

5833

. . . . 

based on hexagonal boron nitride [6]

35/

5835

. . . . 

Composites [6]

35/

584

. . . 

based on silicon nitride [6]

35/

586

. . . . 

Refractories from grain sized mixtures [6]

35/

587

. . . . 

Fine ceramics [6]

35/

589

. . . . . 

obtained from polymer precursors [6]

35/

591

. . . . . 

obtained by reaction sintering [6]

35/

593

. . . . . 

obtained by pressure sintering (C 04 B 35/594 takes precedence) [6]

35/

594

. . . . . 

obtained by sintering a reaction-sintered product, with or without pressure [6]

35/

596

. . . . . 

Composites [6]

35/

597

. . . 

based on silicon oxynitrides [6]

35/

599

. . . . 

based on silicon aluminium oxynitrides (SIALONS) [6]

35/

60

(transferred to C 04 B 35/653)

35/

62

(transferred to C 04 B 35/657)

35/

622

. 

Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products [6]

35/

624

. . 

Sol-gel processing [6]

35/

626

. . 

Preparing or treating the powders individually or as batches [6]

35/

628

. . . 

Coating the powders [6]

35/

63

. . . 

using additives specially adapted for forming the products [6]

35/

632

. . . . 

Organic additives [6]

35/

634

. . . . . 

Polymers (C 04 B 35/636 takes precedence) [6]

35/

636

. . . . . 

Polysaccharides or derivatives thereof [6]

35/

638

. . . . 

Removal thereof [6]

35/

64

. . 

Burning or sintering processes (C 04 B 33/32 takes precedence) [6]

35/

645

. . . 

Pressure sintering [6]

35/

65

. . . 

Reaction sintering of free metal- or free silicon-containing compositions [3]

35/

653

. . 

Processes involving a melting step [6]

35/

657

. . . 

for manufacturing refractories (C 04 B 35/05, C 04 B 35/107, C 04 B 35/484 take precedence) [6]

Notes

(1)

In group C 04 B 35/66, it is desirable to add the indexing codes relating to individual constituents of the monolithic refractories or refractory mortars. The indexing codes, which are chosen from groups C 04 B 7/00 to C 04 B 28/00, 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. [6]

(2)

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]

35/

66

. 

Monolithic refractories or refractory mortars, including those whether or not containing clay

35/

68

(transferred to C 04 B 35/66)

35/

71

. 

Ceramic products containing macroscopic reinforcing agents (C 04 B 35/66 takes precedence) [3,4]

35/

74

. . 

containing shaped metallic materials [2]

35/

76

. . . 

Fibres, filaments, whiskers, platelets, or the like [2]

35/

78

. . 

containing non-metallic materials [2]

35/

80

. . . 

Fibres, filaments, whiskers, platelets, or the like [2]

35/

81

. . . . 

Whiskers [6]

35/

82

. . . . 

Asbestos; Glass; Fused silica [2]

35/

83

. . . . 

Carbon fibres in a carbon matrix [6]

Note

The products covered by this group are usually referred to as "carbon-carbon composites". [6]

35/

84

. . . 

Impregnated or coated materials [2]
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