CPC Subgroup
B27K 3/16 Inorganic impregnating agents
Full Title
Impregnating wood, (dyeing, staining B27K5/00) > Inorganic impregnating agents
10 direct subcodes
Child Classifications
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- B27K 3/18 Compounds of alkaline earth metals
- B27K 3/20 Compounds of alkali metals or ammonium
- B27K 3/22 Compounds of zinc or copper
- B27K 3/24 Compounds of mercury
- B27K 3/26 Compounds of iron, aluminium, or chromium
- B27K 3/28 Compounds of arsenic or antimony
- B27K 3/30 Compounds of fluorine
- B27K 3/32 Mixtures of different inorganic impregnating agents
Top Applicants
Top 10 applicants by patent filingsfor class B27, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 868
- NANJING FORESTRY UNIVERSITY 463
- HOMAG DE 437
- HUSQVARNA SE 360
- SWISS KRONO TEC CH 350
- MAKITA CORPORATION JP 319
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 312
- VAELINGE INNOVATION SE 306
- ANDREAS STIHL & COMPANY DE 275
- FESTOOL DE 260