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IPC Subgroup
E06B 3/273

with prefabricated insulating elements held in position by deformation of portions of the frame members

Introduced: January 1995

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 > Wing frames not characterised by the manner of movement > Frames with special provision for insulation > with prefabricated insulating elements held in position by deformation of portions of the frame members

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

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