CPC Subgroup Additional Only
F17C 2221/01 Pure fluids
Full Title
Handled fluid, in particular type of fluid > Pure fluids
7 direct subcodes
Child Classifications
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- F17C 2221/011 Oxygen
- F17C 2221/012 Hydrogen
- F17C 2221/013 Carbon dioxide
- F17C 2221/014 Nitrogen
- F17C 2221/015 Carbon monoxide
- F17C 2221/016 Noble gases (Ar, Kr, Xe)
- F17C 2221/018 Acetylene
Top Applicants
Top 10 applicants by patent filingsfor class F17, 2013–2023, worldwide · Source: EPO PATSTAT
- GAZ TRANSPORT ET TECHNIGAZ FR 1,718
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,633
- DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 1,570
- SAMSUNG HEAVY INDUSTRIES KR 1,174
- HYUNDAI HEAVY INDUSTRIES COMPANY KR 988
- LINDE DE 757
- ROBERT BOSCH DE 696
- BMW (BAYERISCHE MOTOREN WERKE) DE 523
- TOYOTA MOTOR CORPORATION JP 515
- KAWASAKI HEAVY IND JP 456