IPC Subgroup
E06B 5/01 Trap-doors
Introduced: September 1968
Last revised: January 2006
Full Title
Doors, windows, or like closures for special purposes; Border constructions therefor > Trap-doors
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS, IN GENERAL; LADDERS
- Subclass:
- FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
Related Keywords
SCUTTLE(S) covers or trap doorsTRAP(S) doors
Top Applicants
Top 10 applicants by patent filingsfor class E06, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 1,398
- YKK AP 1,252
- LIXIL CORPORATION 1,235
- SAINT-GOBAIN GLASS FR 1,133
- BUNKA SHUTTER COMPANY 839
- HUNTER DOUGLAS US 812
- SANKYOTATEYAMA 796
- SANWA SHUTTER CORPORATION 699
- VKR HOLDING DK 579
- VIEW US 557