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CPC Subgroup
E01H 1/08

Pneumatically dislodging or taking-up undesirable matter ( suction cleaners in general A47L5/00 - A47L9/00; ); Drying by heat only or by streams of gas (permanently-installed heating or blowing devices E01C11/26; heating or drying for road- building or repairing E01C23/14; ); Cleaning by projecting abrasive particles (sand-blasting in general B24C; )

Full Title

Removing undesirable matter from roads or like surfaces, with or without moistening of the surface (for snow or ice E01H5/00; cleaning tramway rails E01H8/00; obstruction removers on vehicles B60R19/00; in combination with application of bitumen or the like E01C19/16; in combination with application of traffic line E01C23/16 ) > Pneumatically dislodging or taking-up undesirable matter ( suction cleaners in general A47L5/00 - A47L9/00; ); Drying by heat only or by streams of gas (permanently-installed heating or blowing devices E01C11/26; heating or drying for road- building or repairing E01C23/14; ); Cleaning by projecting abrasive particles (sand-blasting in general B24C; )

Filing statistics

CPC E01H 1/08 belongs to the parent subclass E01H, which recorded 21,455 patent applications worldwide between 2013 and 2023. Annual filings grew from 785 in 2013 to 1,782 in 2023 (+127%), peaking at 2,947 applications in 2018. The most active applicants in class E01 are PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN (998 applications), CATERPILLAR PAVING PRODUCTS (937 applications) and CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY (869 applications).

Source: EPO PATSTAT, worldwide filings

4 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class E01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN AT 998
  2. CATERPILLAR PAVING PRODUCTS US 937
  3. CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP COMPANY 869
  4. WIRTGEN DE 740
  5. CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP COMPANY 685
  6. CHANG AN UNIVERSITY 615
  7. CREEC (CHINA RAILWAY ERYUAN ENGINEERING GROUP) 613
  8. SOUTHEAST UNIVERSITY 562
  9. TONGJI UNIVERSITY 500
  10. ROAD & BRIDGE INTERNATIONAL COMPANY 491