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CPC Subclass Not Allocatable
C09D

COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

Description

C09D encompasses coating compositions and related products used to impart color, protection, or functional properties to surfaces. This subclass covers paints, varnishes, lacquers, inks, wood stains, filling pastes, and chemical removers for paints or inks, as well as solid or paste colorants for printing and decorative applications. The classification includes formulations based on various binders (such as resins, oils, or polymers) and their application methods, but excludes adhesives and natural resins classified elsewhere in C09. Inventions in this subclass typically address composition design, performance characteristics, environmental properties, or manufacturing processes for coating systems.

Filing statistics

CPC subclass C09D recorded 321,075 patent applications worldwide between 2013 and 2023. Annual filings grew from 21,074 in 2013 to 22,354 in 2023 (+6%), peaking at 36,931 applications in 2016. The most active applicants in class C09 are LG CHEM (7,954 applications), HALLIBURTON ENERGY SERVICES GROUP (6,584 applications) and NITTO DENKO CORPORATION (6,500 applications).

Source: EPO PATSTAT, worldwide filings

61 direct subcodes

Child Classifications

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  • C09D 10/00 Correcting fluids, e.g. fluid media for correction of typographical errors by coating
  • C09D 117/00 Coating compositions based on reclaimed rubber
  • C09D 13/00 Pencil-leads; Crayon compositions; Chalk compositions

Top Applicants

Top 10 applicants by patent filingsfor class C09, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 7,954
  2. HALLIBURTON ENERGY SERVICES GROUP US 6,584
  3. NITTO DENKO CORPORATION JP 6,500
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
  5. DOW GLOBAL TECHNOLOGIES US 6,324
  6. FUJIFILM JP 5,832
  7. MERCK PATENT DE 5,481
  8. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
  9. SAMSUNG DISPLAY KR 5,105
  10. NITTO DENKO CORPORATION 3,584