B27K1/00	7	Damping wood	B27K1/00	B27K1/00		471
B27K1/02	8	Apparatus	B27K1/02	B27K1/02		140
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		121
B27K3/002	8	{employing compositions comprising microorganisms}	B27K3/00	B27K3/00		149
B27K3/005	8	{employing compositions comprising microparticles}	B27K3/00	B27K3/00		254
B27K3/007	8	{employing compositions comprising nanoparticles}	B27K3/00	B27K3/00		418
B27K3/02	8	Processes; Apparatus	B27K3/02	B27K3/02		1373
B27K3/0207	9	{Pretreatment of wood before impregnation}	B27K3/02	B27K3/02		735
B27K3/0214	10	{Drying (drying in general F26B)}	B27K3/02	B27K3/02		715
B27K3/0221	10	{Pore opening (B27K3/0214 takes precedence)}	B27K3/02	B27K3/02		172
B27K3/0228	9	{Spraying apparatus, e.g. tunnels}	B27K3/02	B27K3/02		380
B27K3/0235	9	{Stationary devices on or in legs or poles}	B27K3/02	B27K3/02		93
B27K3/0242	9	{using melt impregnation}	B27K3/02	B27K3/02		67
B27K3/025	9	{Controlling the process}	B27K3/02	B27K3/02		436
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		263
B27K3/0278	9	{involving an additional treatment during or after impregnation}	B27K3/02	B27K3/02		604
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		270
B27K3/04	9	Impregnating in open tanks	B27K3/04	B27K3/04		523
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		2230
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		634
B27K3/105	11	{Injection apparatus}	B27K3/10	B27K3/10		269
B27K3/12	9	Impregnating by coating the surface of the wood with an impregnating paste	B27K3/12	B27K3/12		819
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		1223
B27K3/153	10	{Without in-situ polymerisation, condensation, or cross-linking reactions}	B27K3/15	B27K3/15		258
B27K3/156	10	{Combined with grafting onto wood fibres}	B27K3/15	B27K3/15		145
B27K3/16	8	Inorganic impregnating agents	B27K3/16	B27K3/16		807
B27K3/163	9	{Compounds of boron}	B27K3/16	B27K3/16		354
B27K3/166	9	{Compounds of phosphorus}	B27K3/16	B27K3/16		249
B27K3/18	9	Compounds of alkaline earth metals	B27K3/18	B27K3/18		247
B27K3/20	9	Compounds of alkali metals or ammonium	B27K3/20	B27K3/20		958
B27K3/22	9	Compounds of zinc or copper	B27K3/22	B27K3/22		611
B27K3/24	9	Compounds of mercury	B27K3/24	B27K3/24		32
B27K3/26	9	Compounds of iron, aluminium, or chromium	B27K3/26	B27K3/26		321
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		915
B27K3/34	8	Organic impregnating agents {(polymers B27K3/15)}	B27K3/34	B27K3/34		1489
B27K3/343	9	{Heterocyclic compounds}	B27K3/34	B27K3/34		582
B27K3/346	9	{Grafting onto wood fibres (B27K3/156 takes precedence; macromolecular compounds derived from lignocellulosic materials C08H)}	B27K3/34	B27K3/34		119
B27K3/36	9	Aliphatic compounds	B27K3/36	B27K3/36		1155
B27K3/38	9	Aromatic compounds {(B27K3/343 takes precedence)}	B27K3/38	B27K3/38		535
B27K3/40	10	halogenated	B27K3/40	B27K3/40		327
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		1926
B27K3/52	8	Impregnating agents containing mixtures of inorganic and organic compounds	B27K3/52	B27K3/52		4166
B27K5/00	7	Treating of wood not provided for in groups B27K1/00, B27K3/00	B27K5/00	B27K5/00		805
B27K5/0005	8	{Cryogenic treatment}	B27K5/00	B27K5/00		284
B27K5/001	8	{Heating}	B27K5/00	B27K5/00		2460
B27K5/0015	8	{by electric means}	B27K5/00	B27K5/00		57
B27K5/002	9	{Electric discharges, plasma}	B27K5/00	B27K5/00		109
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		36
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		21
B27K5/0055	9	{Radio-waves, e.g. microwaves}	B27K5/00	B27K5/00		428
B27K5/006	9	{Vibrations}	B27K5/00	B27K5/00		41
B27K5/0065	9	{Ultrasonic treatment}	B27K5/00	B27K5/00		307
B27K5/007	8	{using pressure (B27K3/08 takes precedence)}	B27K5/00	B27K5/00		485
B27K5/0075	9	{Vacuum}	B27K5/00	B27K5/00		269
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		1314
B27K5/009	9	{using a well-defined temperature schedule}	B27K5/00	B27K5/00		114
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		2026
B27K5/04	8	Combined bleaching or impregnating and drying of wood	B27K5/04	B27K5/04		2812
B27K5/06	8	Softening or hardening of wood	B27K5/06	B27K5/06		986
B27K5/065	9	{Hardening}	B27K5/06	B27K5/06		90
B27K7/00	7	Chemical or physical treatment of cork (mechanical working of cork B27J5/00)	B27K7/00	B27K7/00		363
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		332
B27K9/002	8	{Cane, bamboo}	B27K9/00	B27K9/00		2158
B27K9/005	8	{Reed}	B27K9/00	B27K9/00		36
B27K9/007	8	{Straw}	B27K9/00	B27K9/00		301
B27K2200/00	7	Wooden materials to be treated	CPCONLY	B27K2200/00		10
B27K2200/10	8	Articles made of particles or fibres consisting of wood or other lignocellulosic material	CPCONLY	B27K2200/10		225
B27K2200/15	8	Pretreated particles or fibres	CPCONLY	B27K2200/15		292
B27K2200/30	8	Multilayer articles comprising wood	CPCONLY	B27K2200/30		121
B27K2240/00	7	Purpose of the treatment	CPCONLY	B27K2240/00		356
B27K2240/10	8	Extraction of components naturally occurring in wood, cork, straw, cane or reed	CPCONLY	B27K2240/10		159
B27K2240/15	8	Decontamination of previously treated wood	CPCONLY	B27K2240/15		210
B27K2240/20	8	Removing fungi, molds or insects	CPCONLY	B27K2240/20		2528
B27K2240/30	8	Fireproofing	CPCONLY	B27K2240/30		1478
B27K2240/50	8	Ageing	CPCONLY	B27K2240/50		133
B27K2240/60	8	Improving the heat-storage capacity	CPCONLY	B27K2240/60		36
B27K2240/70	8	Hydrophobation treatment	CPCONLY	B27K2240/70		865
B27K2240/90	8	UV-protection	CPCONLY	B27K2240/90		118
