IPC Subgroup
E02F 3/04 mechanically-driven
Introduced: September 1968
Last revised: January 2006
Full Title
Dredgers; Soil-shifting machines > mechanically-driven
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
- Subclass:
- DREDGING; SOIL-SHIFTING
10 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- E02F 3/06 with digging screws
- E02F 3/08 with digging elements on an endless chain
- E02F 3/18 with digging wheels turning round an axis
- E02F 3/28 with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets
- E02F 3/46 with reciprocating digging or scraping elements moved by cables or hoisting ropes
- E02F 3/627 Devices to connect beams or arms to a tractor or similar self-propelled machine
- E02F 3/64 Bucket cars, i.e. having scraper bowls
- E02F 3/76 Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling devices
- E02F 3/88 with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F 3/96 with arrangements for alternate use of different digging elements
Top Applicants
Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT
- KOMATSU JP 3,549
- CATERPILLAR US 2,893
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
- HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
- POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
- SGCC(STATE GRID CORPORATION OF CHINA) 2,119
- HOHAI UNIVERSITY 1,821
- KOMATSU 1,775
- POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725