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

Introduced: September 1968

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
Subclass:: MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR

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.

Scope Notes

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 .

18 direct subcodes

Child Classifications

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C09K 101/00 Agricultural use
C09K 103/00 Civil engineering use
C09K 105/00 Erosion prevention
C09K 107/00 Impermeabilisation
C09K 109/00 pH regulation
C09K 11/00 Luminescent materials, e.g. electroluminescent or chemiluminescent
C09K 111/00 Perovskites, i.e. ABX
C09K 113/00 Quantum dots
C09K 13/00 Etching, surface-brightening or pickling compositions
C09K 15/00 Anti-oxidant compositions; Compositions inhibiting chemical change
C09K 17/00 Soil-conditioning materials or soil-stabilising materials
C09K 19/00 Liquid crystal materials
C09K 21/00 Fireproofing materials
C09K 23/00 Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
C09K 3/00 Materials not provided for elsewhere
C09K 5/00 Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
C09K 8/00 Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
C09K 9/00 Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy