IPC Subgroup
E06B 7/3 Peep-holes; Devices for speaking through; Doors having windows
Introduced: September 1968
Last revised: January 2006
Full Title
Special arrangements or measures in connection with doors or windows > Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners > Peep-holes; Devices for speaking through; Doors having windows
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
peep-holes and speaking APERTURES in doors or windowsINSPECTION apertures for 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