IPC Subgroup
F17B 1/007 with telescopically movable ring-shaped parts
Introduced: July 1974
Last revised: January 2006
Full Title
Gas-holders of variable capacity > with telescopically movable ring-shaped parts
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STORING OR DISTRIBUTING GASES OR LIQUIDS
- Subclass:
- GAS-HOLDERS OF VARIABLE CAPACITY
Top Applicants
Top 10 applicants by patent filingsfor 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