IPC Main Group
C04B 111/00 Function, property or use of the mortars, concrete or artificial stone
Introduced: January 1995
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- Subclass:
- LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
Filing statistics
IPC C04B 111/00 belongs to the parent subclass C04B, which recorded 267,018 patent applications worldwide between 2013 and 2023. Annual filings grew from 18,185 in 2013 to 23,514 in 2023 (+29%), peaking at 27,426 applications in 2018. The most active applicants in class C04 are CHINESE ACADEMY OF SCIENCES (2,095 applications), WUHAN UNIVERSITY OF TECHNOLOGY (1,205 applications) and NGK INSULATORS (1,133 applications).
Source: EPO PATSTAT, worldwide filings
17 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C04B 111/1 Compositions characterised by the absence of a specified material
- C04B 111/2 Resistance against chemical, physical or biological attack
- C04B 111/3 Nailable or sawable materials
- C04B 111/32 Expansion inhibited materials
- C04B 111/34 Non-shrinking materials
- C04B 111/4 Porous or lightweight materials
- C04B 111/5 Flexible or elastic materials
- C04B 111/52 Sound insulating materials
- C04B 111/54 Substitutes for natural stone, e.g. artificial marble
- C04B 111/56 Compositions suited for fabrication of pipes, e.g. by centrifugal casting
- C04B 111/6 Flooring materials
- C04B 111/7 Grouts
- C04B 111/72 Compositions used for repairing existing buildings or building materials
- C04B 111/74 Underwater applications
- C04B 111/76 Use at sub-zero temperatures
- C04B 111/8 Optical properties, e.g. transparency
- C04B 111/9 Electrical properties
Top Applicants
Top 10 applicants by patent filingsfor class C04, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 2,095
- WUHAN UNIVERSITY OF TECHNOLOGY 1,205
- NGK INSULATORS JP 1,133
- HALLIBURTON ENERGY SERVICES GROUP US 1,049
- SIKA TECHNOLOGY CH 1,041
- GUILIN UNIVERSITY OF TECHNOLOGY 807
- WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
- SOUTHEAST UNIVERSITY 801
- CORNING US 777
- UNITED STATES GYPSUM COMPANY US 739