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CPC Subgroup
F17B 1/007

with telescopically movable ring-shaped parts (F17B1/10 takes precedence; sealing of rings F17B1/04)

Full Title

Gas-holders of variable capacity (large containers in general B65D88/00; storing fluids in natural or artificial cavities or chambers in the earth B65G5/00) > with telescopically movable ring-shaped parts (F17B1/10 takes precedence; sealing of rings F17B1/04)

Filing statistics

CPC F17B 1/007 belongs to the parent subclass F17B, which recorded 387 patent applications worldwide between 2013 and 2023. Annual filings grew from 22 in 2013 to 46 in 2023 (+109%), peaking at 51 applications in 2017. The most active applicants in class F17 are GAZ TRANSPORT ET TECHNIGAZ (1,718 applications), L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (1,633 applications) and DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY (1,570 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class F17, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GAZ TRANSPORT ET TECHNIGAZ FR 1,718
  2. L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,633
  3. DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 1,570
  4. SAMSUNG HEAVY INDUSTRIES KR 1,174
  5. HYUNDAI HEAVY INDUSTRIES COMPANY KR 988
  6. LINDE DE 757
  7. ROBERT BOSCH DE 696
  8. BMW (BAYERISCHE MOTOREN WERKE) DE 523
  9. TOYOTA MOTOR CORPORATION JP 515
  10. KAWASAKI HEAVY IND JP 456