PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR (applying liquids or other fluent materials to surfaces in general B05; coating wood or similar material B44D); CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS

Introduced: September 1968

Description

B27K covers processes, apparatus, and chemical or physical treatment substances for impregnating, staining, dyeing, or bleaching wood and related fibrous materials (cork, cane, reed, straw). This includes methods and equipment for applying permeant liquids to wood that are not covered by more specific subclasses, such as preservative treatments, colorization processes, and surface modifications using chemical or physical means. The classification encompasses both the treatment procedures and the selection or formulation of substances used in these operations, excluding treatments already classified under dedicated preservation or specialized wood-working processes.

Title

Titles differ between systems:

IPC: PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS

CPC: PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR (applying liquids or other fluent materials to surfaces in general B05; coating wood or similar material B44D); CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS

Full Title

Full titles differ between systems:

IPC:

PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS

CPC:

PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR (applying liquids or other fluent materials to surfaces in general B05; coating wood or similar material B44D); CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS

Of 7 combined children, 5 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

5 shared codes have differing titles between IPC and CPC.

Child Classifications

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B27K 1/00 Damping wood IPC+CPC Available in IPC and CPC
B27K 2200/00 Wooden materials to be treated 2nd only +3 CPC CPC only CPC only
B27K 2240/00 Purpose of the treatment 2nd only +8 CPC CPC only CPC only
B27K 3/00 Impregnating wood, (dyeing, staining B27K5/00) +3 CPC IPC+CPC Available in IPC and CPC
B27K 5/00 Treating of wood not provided for in groups B27K1/00, B27K3/00 +8 CPC IPC+CPC Available in IPC and CPC
B27K 7/00 Chemical or physical treatment of cork (mechanical working of cork B27J5/00) IPC+CPC Available in IPC and CPC
B27K 9/00 Chemical or physical treatment of reed, straw, or similar material (mechanical working of cane or the like B27J1/00) +3 CPC IPC+CPC Available in IPC and CPC