DIFF Subgroup
F17D 5/005 Full Title
Protection or supervision of installations (arrangements for protecting foundations E02D31/00; protecting pipes from damage or internal or external wear F16L57/00, against corrosion and scale F16L58/00; investigation of the fluid-tightness of structures G01M3/00)
Top Applicants
Top Applicants (IPC)
Class F17,2013–2023, worldwide · Source: EPO PATSTAT
- DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 1,622
- GAZ TRANSPORT ET TECHNIGAZ FR 1,588
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,470
- SAMSUNG HEAVY INDUSTRIES KR 1,287
- HYUNDAI HEAVY INDUSTRIES COMPANY KR 989
- TOYOTA MOTOR CORPORATION 830
- LINDE DE 703
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 666
- ROBERT BOSCH DE 654
- BMW (BAYERISCHE MOTOREN WERKE) DE 511
Top Applicants (CPC)
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