IPC 7 English version C04B 30/00-C04B 35/84

IPC ⁷ English version

C04B 16/00 - C04B 28/36

C04B03000-C04B03584

C04B 37/00 - C04B 111:94

SECTION C – CHEMISTRY; METALLURGY

C 04

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

C 04 B

LIME; 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]

30/

Compositions for artificial stone, not containing binders [4]

30/

containing fibrous materials [4]

32/

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

32/

with reinforcements [4]

Ceramics

33/

Clay-wares (monolithic refractories or refractory mortars C04B 35/66; porous products C04B 38/00) [2]

33/

Preparing or treating the raw materials individually or as batches

33/

Clay; Kaolin

33/

Rendering lime harmless

33/

Preventing efflorescence

33/

Eliminating iron or lime

33/

Compounding ingredients (C04B 33/36, C04B 35/71 take precedence) [2]

33/

Colouring matters

33/

Lean materials, e.g. grog, quartz

33/

for liquefying the batches

33/

for dry-pressing (C04B 33/13 takes precedence)

33/

Grog products

33/

Manufacture of porcelain or white ware

33/

of porcelain for electrical insulation

33/

Slip casting (mechanical features B28B 1/26)

33/

Drying methods

33/

Burning methods

33/

combined with glazing

33/

Reinforced clay-wares [2]

35/

Shaped ceramic products characterised by their composition (porous products C04B 38/00; articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B22D 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 C22C); Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products (chemical preparation of powders of inorganic compounds C01) [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 C04B 101:00. The indexing code should be unlinked. [6]

35/

based on oxides [6]

35/

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/

based on magnesium oxide [6]

35/

043

Refractories from grain sized mixtures [6]

35/

047

containing chromium oxide or chrome ore [6]

35/

Refractories by fusion casting [6]

35/

053

Fine ceramics [6]

35/

057

based on calcium oxide [6]

35/

based on oxide mixtures derived from dolomite

35/

based on beryllium oxide [6]

35/

based on aluminium oxide [6]

35/

101

Refractories from grain sized mixtures [6]

35/

103

containing non-oxide refractory materials, e.g. carbon (C04B 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/

based on chromium oxide (C04B 35/047, C04B 35/105 take precedence) [6]

35/

based on silica [6]

35/

based on silicates other than clay [6]

35/

rich in aluminium oxide [6]

35/

185

Mullite [6]

35/

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

35/

195

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

35/

rich in magnesium oxide [6]

35/

rich in calcium oxide [6]

35/

based on ferrites [2,6]

35/

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

35/

with zinc oxide [2,6]

35/

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

35/

with zinc oxide [2,6]

35/

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

35/

with zinc oxide [2,6]

35/

with rare earth oxide [2,6]

35/

based on chromites (C04B 35/047, C04B 35/105 take precedence) [2,6]

35/

based on aluminates [2,6]

35/

443

Magnesium aluminate spinel [6]

35/

447

based on phosphates [6]

35/

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/

based on titanium oxides or titanates (containing also zirconium or hafnium oxides, zirconates or hafnates C04B 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/

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/

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/

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/

based on rare earth compounds

35/

505

based on yttrium oxide [6]

35/

based on compounds of actinides (nuclear fuel materials G21C 3/62) [2]

35/

515

based on non-oxides (C04B 35/50, C04B 35/51 take precedence) [6]

35/

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/

547

based on sulfides or selenides [6]

35/

553

based on fluorides [6]

35/

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/

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 (C04B 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/

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/

using additives specially adapted for forming the products [6]

35/

632

Organic additives [6]

35/

634

Polymers (C04B 35/636 takes precedence) [6]

35/

636

Polysaccharides or derivatives thereof [6]

35/

638

Removal thereof [6]

35/

Burning or sintering processes (C04B 33/32 takes precedence) [6]

35/

645

Pressure sintering [6]

35/

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

35/

653

Processes involving a melting step [6]

35/

657

for manufacturing refractories (C04B 35/05, C04B 35/107, C04B 35/484 take precedence) [6]

Notes

(1)

In group C04B 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 C04B 7/00 to C04B 28/00, 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. [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/

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

35/

Ceramic products containing macroscopic reinforcing agents (C04B 35/66 takes precedence) [3,4]

35/

containing shaped metallic materials [2]

35/

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

35/

containing non-metallic materials [2]

35/

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

35/

Whiskers [6]

35/

Asbestos; Glass; Fused silica [2]

35/

Carbon fibres in a carbon matrix [6]

Note

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

35/

Impregnated or coated materials [2]

C04B 16/00 - C04B 28/36

C04B 37/00 - C04B 111:94