CPC Main Group
E21C 33/00 Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam
Filing statistics
CPC E21C 33/00 belongs to the parent subclass E21C, which recorded 16,559 patent applications worldwide between 2013 and 2023. Annual filings grew from 828 in 2013 to 1,605 in 2023 (+94%), peaking at 1,908 applications in 2021. The most active applicants in class E21 are HALLIBURTON ENERGY SERVICES GROUP (27,652 applications), SAUDI ARABIAN OIL COMPANY (7,755 applications) and PETROCHINA COMPANY (7,025 applications).
Source: EPO PATSTAT, worldwide filings
1 direct subcode
Child Classifications
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- E21C 33/02 with equipment for loading or unloading the machine on to or from the truck
Top Applicants
Top 10 applicants by patent filingsfor class E21, 2013–2023, worldwide · Source: EPO PATSTAT
- HALLIBURTON ENERGY SERVICES GROUP US 27,652
- SAUDI ARABIAN OIL COMPANY SA 7,755
- PETROCHINA COMPANY 7,025
- BAKER HUGHES US 6,589
- SCHLUMBERGER TECHNOLOGY US 6,151
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 4,443
- SCHLUMBERGER TECHNOLOGY NL 4,255
- CNPC (CHINA NATIONAL PETROLEUM CORPORATION) 3,991
- SERVICES PETROLIERS SCHLUMBERGER FR 3,300
- SCHLUMBERGER CANADA CA 3,086