B27K1/00	7	Damping wood	B27K1/00	B27K1/00		468
B27K1/02	8	Apparatus	B27K1/02	B27K1/02		139
B27K3/00	7	Impregnating wood, {e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process}(dyeing, staining B27K5/00)<br><br><u>NOTE</u><br><br>In groups B27K3/16 - B27K3/50, the last place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, impregnating agents are classified in the last appropriate place.This Note corresponds to IPC Note (1) relating to B27K3/16 - B27K3/34.	B27K3/00	B27K3/00		120
B27K3/002	8	{employing compositions comprising microorganisms}	B27K3/00	B27K3/00		148
B27K3/005	8	{employing compositions comprising microparticles}	B27K3/00	B27K3/00		254
B27K3/007	8	{employing compositions comprising nanoparticles}	B27K3/00	B27K3/00		412
B27K3/02	8	Processes; Apparatus	B27K3/02	B27K3/02		1348
B27K3/0207	9	{Pretreatment of wood before impregnation}	B27K3/02	B27K3/02		726
B27K3/0214	10	{Drying (drying in general F26B)}	B27K3/02	B27K3/02		701
B27K3/0221	10	{Pore opening (B27K3/0214 takes precedence)}	B27K3/02	B27K3/02		171
B27K3/0228	9	{Spraying apparatus, e.g. tunnels}	B27K3/02	B27K3/02		374
B27K3/0235	9	{Stationary devices on or in legs or poles}	B27K3/02	B27K3/02		92
B27K3/0242	9	{using melt impregnation}	B27K3/02	B27K3/02		66
B27K3/025	9	{Controlling the process}	B27K3/02	B27K3/02		430
B27K3/0257	9	{using rods or tablets, or ampoules, e.g. inserted in pre-drilled cavities}	B27K3/02	B27K3/02		44
B27K3/0264	9	{using staples or nails}	B27K3/02	B27K3/02		7
B27K3/0271	9	{Vapour phase impregnation}	B27K3/02	B27K3/02		262
B27K3/0278	9	{involving an additional treatment during or after impregnation}	B27K3/02	B27K3/02		600
B27K3/0285	10	{for improving the penetration of the impregnating fluid}	B27K3/02	B27K3/02		138
B27K3/0292	10	{for improving fixation (B27K3/0285 takes precedence)}	B27K3/02	B27K3/02		266
B27K3/04	9	Impregnating in open tanks	B27K3/04	B27K3/04		518
B27K3/06	9	Sap stream methods	B27K3/06	B27K3/06		127
B27K3/08	9	Impregnating by pressure {, e.g. vacuum impregnation}	B27K3/08	B27K3/08		2203
B27K3/083	10	{along the fibers, i.e. longitudinal impregnation}	B27K3/08	B27K3/08		62
B27K3/086	10	{using supercritical or high pressure fluids}	B27K3/08	B27K3/08		54
B27K3/10	10	Apparatus	B27K3/10	B27K3/10		632
B27K3/105	11	{Injection apparatus}	B27K3/10	B27K3/10		268
B27K3/12	9	Impregnating by coating the surface of the wood with an impregnating paste	B27K3/12	B27K3/12		812
B27K3/14	9	Bandage methods	B27K3/14	B27K3/14		126
B27K3/15	9	Impregnating involving polymerisation {including use of polymer-containing impregnating agents (macromolecular compounds derived from lignocellulosic materials C08H; compositions of lignin-containing materials C08L97/02)}<br><br><u>NOTE</u><br><br> When classifying in group B27K3/15, classification is additionally made in the groups of subclass C08L for defining the chemical polymeric structure	B27K3/15	B27K3/15		1214
B27K3/153	10	{Without in-situ polymerisation, condensation, or cross-linking reactions}	B27K3/15	B27K3/15		245
B27K3/156	10	{Combined with grafting onto wood fibres}	B27K3/15	B27K3/15		145
B27K3/16	8	Inorganic impregnating agents	B27K3/16	B27K3/16		794
B27K3/163	9	{Compounds of boron}	B27K3/16	B27K3/16		352
B27K3/166	9	{Compounds of phosphorus}	B27K3/16	B27K3/16		246
B27K3/18	9	Compounds of alkaline earth metals	B27K3/18	B27K3/18		244
B27K3/20	9	Compounds of alkali metals or ammonium	B27K3/20	B27K3/20		941
B27K3/22	9	Compounds of zinc or copper	B27K3/22	B27K3/22		605
B27K3/24	9	Compounds of mercury	B27K3/24	B27K3/24		32
B27K3/26	9	Compounds of iron, aluminium, or chromium	B27K3/26	B27K3/26		316
B27K3/28	9	Compounds of arsenic or antimony	B27K3/28	B27K3/28		157
B27K3/30	9	Compounds of fluorine	B27K3/30	B27K3/30		129
B27K3/32	9	Mixtures of different inorganic impregnating agents	B27K3/32	B27K3/32		913
B27K3/34	8	Organic impregnating agents {(polymers B27K3/15)}	B27K3/34	B27K3/34		1459
B27K3/343	9	{Heterocyclic compounds}	B27K3/34	B27K3/34		570
B27K3/346	9	{Grafting onto wood fibres (B27K3/156 takes precedence; macromolecular compounds derived from lignocellulosic materials C08H)}	B27K3/34	B27K3/34		118
B27K3/36	9	Aliphatic compounds	B27K3/36	B27K3/36		1135
B27K3/38	9	Aromatic compounds {(B27K3/343 takes precedence)}	B27K3/38	B27K3/38		529
B27K3/40	10	halogenated	B27K3/40	B27K3/40		326
B27K3/42	10	nitrated, or nitrated and halogenated	B27K3/42	B27K3/42		137
B27K3/44	9	Tar; Mineral oil	B27K3/44	B27K3/44		174
B27K3/46	10	Coal tar	B27K3/46	B27K3/46		71
B27K3/48	10	Mineral oil	B27K3/48	B27K3/48		134
B27K3/50	9	Mixtures of different organic impregnating agents	B27K3/50	B27K3/50		1904
B27K3/52	8	Impregnating agents containing mixtures of inorganic and organic compounds	B27K3/52	B27K3/52		4136
B27K5/00	7	Treating of wood not provided for in groups B27K1/00, B27K3/00	B27K5/00	B27K5/00		794
B27K5/0005	8	{Cryogenic treatment}	B27K5/00	B27K5/00		280
B27K5/001	8	{Heating}	B27K5/00	B27K5/00		2438
B27K5/0015	8	{by electric means}	B27K5/00	B27K5/00		57
B27K5/002	9	{Electric discharges, plasma}	B27K5/00	B27K5/00		107
B27K5/0025	8	{by magnetic fields}	B27K5/00	B27K5/00		21
B27K5/003	8	{by using electromagnetic radiation or mechanical waves (infrared heating of wood B27K5/001)}	B27K5/00	B27K5/00		146
B27K5/0035	9	{Electron beam-radiation}	B27K5/00	B27K5/00		35
B27K5/004	9	{Gamma-radiation}	B27K5/00	B27K5/00		37
B27K5/0045	9	{X-rays}	B27K5/00	B27K5/00		6
B27K5/005	9	{Laser-light}	B27K5/00	B27K5/00		20
B27K5/0055	9	{Radio-waves, e.g. microwaves}	B27K5/00	B27K5/00		424
B27K5/006	9	{Vibrations}	B27K5/00	B27K5/00		41
B27K5/0065	9	{Ultrasonic treatment}	B27K5/00	B27K5/00		303
B27K5/007	8	{using pressure (B27K3/08 takes precedence)}	B27K5/00	B27K5/00		478
B27K5/0075	9	{Vacuum}	B27K5/00	B27K5/00		267
B27K5/008	9	{Supercritical or high pressure fluids}	B27K5/00	B27K5/00		44
B27K5/0085	8	{Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100&#176;C}	B27K5/00	B27K5/00		1296
B27K5/009	9	{using a well-defined temperature schedule}	B27K5/00	B27K5/00		112
B27K5/0095	8	{by employing wrappers}	B27K5/00	B27K5/00		44
B27K5/02	8	Staining or dyeing wood {(wood staining compositions C09D15/00)}; Bleaching wood (bleaching wood pulp D21C9/10)	B27K5/02	B27K5/02		2022
B27K5/04	8	Combined bleaching or impregnating and drying of wood	B27K5/04	B27K5/04		2789
B27K5/06	8	Softening or hardening of wood	B27K5/06	B27K5/06		980
B27K5/065	9	{Hardening}	B27K5/06	B27K5/06		88
B27K7/00	7	Chemical or physical treatment of cork (mechanical working of cork B27J5/00)	B27K7/00	B27K7/00		360
B27K9/00	7	Chemical or physical treatment of reed, straw, or similar material (mechanical working of cane or the like B27J1/00)	B27K9/00	B27K9/00		329
B27K9/002	8	{Cane, bamboo}	B27K9/00	B27K9/00		2129
B27K9/005	8	{Reed}	B27K9/00	B27K9/00		36
B27K9/007	8	{Straw}	B27K9/00	B27K9/00		300
B27K2200/00	7	Wooden materials to be treated	CPCONLY	B27K2200/00		7
B27K2200/10	8	Articles made of particles or fibres consisting of wood or other lignocellulosic material	CPCONLY	B27K2200/10		224
B27K2200/15	8	Pretreated particles or fibres	CPCONLY	B27K2200/15		286
B27K2200/30	8	Multilayer articles comprising wood	CPCONLY	B27K2200/30		121
B27K2240/00	7	Purpose of the treatment	CPCONLY	B27K2240/00		351
B27K2240/10	8	Extraction of components naturally occurring in wood, cork, straw, cane or reed	CPCONLY	B27K2240/10		157
B27K2240/15	8	Decontamination of previously treated wood	CPCONLY	B27K2240/15		204
B27K2240/20	8	Removing fungi, molds or insects	CPCONLY	B27K2240/20		2501
B27K2240/30	8	Fireproofing	CPCONLY	B27K2240/30		1465
B27K2240/50	8	Ageing	CPCONLY	B27K2240/50		132
B27K2240/60	8	Improving the heat-storage capacity	CPCONLY	B27K2240/60		36
B27K2240/70	8	Hydrophobation treatment	CPCONLY	B27K2240/70		854
B27K2240/90	8	UV-protection	CPCONLY	B27K2240/90		118
