MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

Introduced: September 1968

Description

C09K covers materials and compositions designed for specialized applications that do not fit into more specific chemical or industrial classifications within the C section. This subclass encompasses diverse functional materials including heat transfer fluids, lubricants, drilling fluids, de-icing compositions, and materials for optical, electrical, or thermal applications. The classification serves as a residual category for chemical formulations and material systems where the primary technical function or application area falls outside established pigment, paint, adhesive, or natural resin classifications, allowing inventors to classify innovations in emerging material technologies and niche industrial applications.

Title

Titles differ between systems:

IPC: MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR

CPC: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

Full Title

Full titles differ between systems:

IPC:

MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR

CPC:

MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

Additional Content IPC

Glossary

Materials material include compounds, compositions, mixtures and preparations

Limiting references

materials or their applications or uses for which entries are available elsewhere in IPC .

Of 31 combined children, 11 exist in both systems.

13 codes are CPC-only extensions, 7 exist only in IPC.

Note: 13 CPC extensions are marked as secondary classification only.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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C09K 101/00 Agricultural use since 1995 IPC only IPC only
C09K 103/00 Civil engineering use since 1995 IPC only IPC only
C09K 105/00 Erosion prevention since 1995 IPC only IPC only
C09K 107/00 Impermeabilisation since 1995 IPC only IPC only
C09K 109/00 pH regulation since 1995 IPC only IPC only
C09K 11/00 Luminescent materials, e.g. electroluminescent or chemiluminescent since 1974 IPC+CPC Available in IPC and CPC
C09K 111/00 Perovskites, i.e. ABX since 2026 IPC only IPC only
C09K 113/00 Quantum dots since 2026 IPC only IPC only
C09K 13/00 Etching, surface-brightening or pickling compositions (for glass C03C15/00, ; for metallic material C23F, C23G1/00, C25F1/00; ) since 1974 IPC+CPC Available in IPC and CPC
C09K 15/00 Anti-oxidant compositions; Compositions inhibiting chemical change ( , in foodstuffs A21D, A23, , in macromolecular compositions C08; in liquid fuels or lubricants C10; in fats, fatty substances, fatty oils or waxes C11B5/00; in detergents C11D; ; corrosion inhibiting compositions for metallic material C23F11/00) since 1974 IPC+CPC Available in IPC and CPC
C09K 17/00 Soil-conditioning materials or soil-stabilising materials (specially adapted for boreholes or wells C09K8/00; fertilisers C05; consolidating by placing solidifying or pore-filling substances in the soil E02D3/12) since 1980 IPC+CPC Available in IPC and CPC
C09K 19/00 Liquid crystal materials since 1985 IPC+CPC Available in IPC and CPC
C09K 21/00 Fireproofing materials (for use in a particular application, see the relevant places, e.g. fireproofing of wood B27K, of polymers C08, of textiles D06M, of paper D21H; fireproof paints C09D5/18) since 1985 IPC+CPC Available in IPC and CPC
C09K 2101/00 Agricultural use 2nd only CPC only CPC only
C09K 2103/00 Civil engineering use 2nd only CPC only CPC only
C09K 2105/00 Erosion prevention 2nd only CPC only CPC only
C09K 2107/00 Impermeabilisation 2nd only CPC only CPC only
C09K 2109/00 pH regulation 2nd only CPC only CPC only
C09K 2111/00 Perovskites, i.e. ABX3 2nd only CPC only CPC only
C09K 2113/00 Quantum dots 2nd only CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

LG CHEM KR 6,420
NITTO DENKO CORPORATION JP 5,752
HALLIBURTON ENERGY SERVICES GROUP US 5,650
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 5,635
DOW GLOBAL TECHNOLOGIES US 4,844
MERCK PATENT DE 4,779
CHINESE ACADEMY OF SCIENCES 4,311
FUJIFILM JP 4,205
BASF (BADISCHE ANILIN & SODA FABRIK) DE 4,039
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,931

Top Applicants (CPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

LG CHEM KR 7,954
HALLIBURTON ENERGY SERVICES GROUP US 6,584
NITTO DENKO CORPORATION JP 6,500
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
DOW GLOBAL TECHNOLOGIES US 6,324
FUJIFILM JP 5,832
MERCK PATENT DE 5,481
BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
SAMSUNG DISPLAY KR 5,105
NITTO DENKO CORPORATION 3,584