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IPC Subgroup
E04G 21/16

Tools or apparatus

Introduced: September 1968

Last revised: January 2006

Full Title

Preparing, conveying, or working-up building materials or building elements; Other devices or measures for constructional work > Conveying or assembling building elements > Tools or apparatus

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
BUILDING
Subclass:
SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS

Related Keywords

BRICKS laying machines or toolsbricklayers' TROWELS

3 direct subcodes

Child Classifications

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  • E04G 21/18 Adjusting tools; Templates
  • E04G 21/2 for applying mortar
  • E04G 21/22 for setting building elements with mortar, e.g. brick-laying machines

Top Applicants

Top 10 applicants by patent filingsfor class E04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
  2. ZHEJIANG YASHA DECORATION COMPANY 4,488
  3. SGCC(STATE GRID CORPORATION OF CHINA) 4,427
  4. CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
  5. CHINA MCC17 GROUP COMPANY 3,122
  6. GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
  7. SHENYANG JIANZHU UNIVERSITY 2,420
  8. CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
  9. CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
  10. CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967