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IPC Subgroup
F17D 1/2

Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves

Introduced: July 1974

Last revised: January 2006

Full Title

Pipe-line systems > Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
STORING OR DISTRIBUTING GASES OR LIQUIDS
Subclass:
PIPE-LINE SYSTEMS; PIPE-LINES

Top Applicants

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

  1. DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 1,622
  2. GAZ TRANSPORT ET TECHNIGAZ FR 1,588
  3. L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,470
  4. SAMSUNG HEAVY INDUSTRIES KR 1,287
  5. HYUNDAI HEAVY INDUSTRIES COMPANY KR 989
  6. TOYOTA MOTOR CORPORATION 830
  7. LINDE DE 703
  8. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 666
  9. ROBERT BOSCH DE 654
  10. BMW (BAYERISCHE MOTOREN WERKE) DE 511