C04B 35/00 Shaped ceramic products characterised by their composition ; Ceramics 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
Introduced: September 1968
Title
Titles differ between systems:
IPC: Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
CPC: Shaped ceramic products characterised by their composition ; Ceramics 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
Full Title
Full titles differ between systems:
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
Shaped ceramic products characterised by their composition ; Ceramics 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
Additional Content IPC
Glossary
ceramics inorganic, non-metallic products obtained by a process involving a shaping step and a sintering or comparable heat treatment step, with the exclusion of cements, cermets and glasses, glazes, vitreous enamels and devitrified glass ceramics fine ceramics ceramics having a polycrystalline fine-grained microstructure, e.g. of dimensions below 100 micrometer refractories ceramics or mortars withstanding high temperatures of at least about 1500 degrees C. For classification and search in this subclass, no substantial distinction is made between the terms "refractories" and "ceramics" carbon-carbon composites products consisting of carbon fibres in a carbon matrix are usually referred to as "carbon-carbon composites" porous materials materials which are deliberately made porous, e.g. by adding gas-forming, foaming, burnable or lightweight additives to the composition they are made of
Limiting references
Mechanical features relating to the working of ceramics, e.g. mixing or shaping ceramic compositions Devitrified glass ceramics Clay-wares Compositions containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, such as oxynitrides or sulfides, other than as macroscopic reinforcing agents Manufacture of ceramic fibres Furnaces, kilns, ovens, or retorts Casings, linings, walls, roofs of furnaces, kilns, ovens, or retorts
Application references
Dental prostheses, e.g. porcelain or ceramic teeth Materials for prostheses or for coating prostheses Materials for catheters or for coating catheters Materials for other surgical articles Luminescent materials Fireproofing materials Materials for coating by flame or plasma spraying Materials for coating by sputtering, e.g. ceramic targets Materials for parts of bearings, e.g. sliding-contact bearings Materials for friction linings Materials for pistons, trunk pistons, plungers Materials for piston-rings or seats therefor Materials for rigid pipes Materials for protection of pipes or pipe fittings against corrosion or incrustation Luminescent materials for light screens Materials for conductors or conductive bodies Materials for insulators or insulating or dielectric bodies Superconductive or hyperconductive conductors, cables, or transmission lines Materials for varistor cores Materials for magnets or magnetic bodies Superconducting magnets or coils Materials for fixed capacitors, e.g. ceramic dielectrics Materials for superconductive or hyperconductive devices Materials for piezo-electric or electrostrictive elements Materials for inert electrodes with catalytic activity for electrochemical generators, e.g. for fuel cells Materials for solid electrolytes of fuel cells Dielectric resonators of the waveguide type Details of semiconductor or other solid-state devices characterised by the material, e.g. ceramic substrates
IPC and CPC are identically structured here. All 7 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- C04B 35/51 based on compounds of actinides ( nuclear fuel materials G21C3/62) since 1974 IPC+CPC Available in IPC and CPC
- C04B 35/622 Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products since 1995 +4 CPC IPC+CPC Available in IPC and CPC
- C04B 35/66 Monolithic refractories or refractory mortars, including those whether or not containing clay IPC+CPC Available in IPC and CPC
- C04B 35/71 Ceramic products containing macroscopic reinforcing agents (C04B35/66 takes precedence ) since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,095
- WUHAN UNIVERSITY OF TECHNOLOGY 1,205
- NGK INSULATORS JP 1,133
- HALLIBURTON ENERGY SERVICES GROUP US 1,049
- SIKA TECHNOLOGY CH 1,041
- GUILIN UNIVERSITY OF TECHNOLOGY 807
- WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
- SOUTHEAST UNIVERSITY 801
- CORNING US 777
- UNITED STATES GYPSUM COMPANY US 739
Top Applicants (CPC)
Class C04,2013–2023, worldwide · Source: EPO PATSTAT
- HALLIBURTON ENERGY SERVICES GROUP US 2,158
- CHINESE ACADEMY OF SCIENCES 1,569
- NGK INSULATORS JP 1,504
- SIKA TECHNOLOGY CH 1,181
- CORNING US 974
- WUHAN UNIVERSITY OF TECHNOLOGY 926
- UNITED STATES GYPSUM COMPANY US 882
- GE (GENERAL ELECTRIC COMPANY) US 828
- MITSUBISHI MATERIALS CORPORATION JP 792
- SAUDI ARABIAN OIL COMPANY SA 686