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IPC Subgroup
E06B 3/9

Revolving doors; Cages or housings therefor

Introduced: September 1968

Last revised: January 2006

Full Title

Window sashes, door leaves, or like elements for closing openings; Layout of fixed or moving closures, e.g. windows; Features of rigidly-mounted outer frames relating to the mounting of wing frames > Revolving doors; Cages or housings therefor

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

Filing statistics

IPC E06B 3/9 belongs to the parent subclass E06B, which recorded 252,676 patent applications worldwide between 2013 and 2023. Annual filings grew from 14,786 in 2013 to 24,359 in 2023 (+65%), peaking at 33,082 applications in 2020. The most active applicants in class E06 are SGCC(STATE GRID CORPORATION OF CHINA) (1,398 applications), YKK AP (1,252 applications) and LIXIL CORPORATION (1,235 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

REVOLVING doors

Top Applicants

Top 10 applicants by patent filingsfor class E06, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 1,398
  2. YKK AP 1,252
  3. LIXIL CORPORATION 1,235
  4. SAINT-GOBAIN GLASS FR 1,133
  5. BUNKA SHUTTER COMPANY 839
  6. HUNTER DOUGLAS US 812
  7. SANKYOTATEYAMA 796
  8. SANWA SHUTTER CORPORATION 699
  9. VKR HOLDING DK 579
  10. VIEW US 557