Derwent Classification System: Printing, Coating and Photographic

Specifications with no chemical interest are not included. Thus printing machines and photographic film processing apparatus and adhesive applicators are excluded.

Adhesive processes in the production of specific goods are excluded, unless the novelty lies in the adhesive material.

Normally excluded from Section G are polymeric coatings produced by hot melt extrusion eg cable coatings (Section A), metallic coatings (Section M) and vitreous enamel coatings (Section L).

Fillers for specific materials are usually classified under the related material section, eg Section A, and are excluded from Section G.

Approximate IPCs are given in brackets.

G01 Inorganic pigments and non-fibrous fillers (C09C).
G02 Inks, paints, polishes - polymer-based paints and inks are also classified in Section A (C09D, F, G).
G03 Adhesives - excluding dispensers. Polymeric adhesives are also classified in Section A (C09H, J).
G04 Miscellaneous compositions - including luminescent and tenebrescent materials, de-icing/ de-misting compositions, mastics, heat transfer compositions and aerosol-can filling mixtures (C09H).
G05 Printing materials and processes (B41, M, N).
G06 Photosensitive compositions and bases; photographic processes - includes photo-resist coatings (G03C).
G07 Photo-mechanical production of printing surfaces (G03F).
G08 Electrography, electrophotography and magnetography (G03G).