IPC Subgroup
B27K 3/24 Compounds of mercury
Introduced: September 1968
Last revised: January 2006
Full Title
Impregnating wood, e.g. for protection > Inorganic impregnating agents > Compounds of mercury
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- Subclass:
- 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
Top Applicants
Top 10 applicants by patent filingsfor class B27, 2013–2023, worldwide · Source: EPO PATSTAT
- NANJING FORESTRY UNIVERSITY 960
- ROBERT BOSCH DE 762
- HOMAG DE 384
- HARBIN ARTS AND CRAFTS COMPANY 350
- NORTHEAST FORESTRY UNIVERSITY 343
- SWISS KRONO TEC CH 304
- MAKITA CORPORATION 298
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 296
- VAELINGE INNOVATION SE 287
- HUSQVARNA SE 282