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IPC Subgroup
F17C 3/04

by insulating layers

Introduced: September 1968

Last revised: January 2006

Full Title

Vessels not under pressure > with provision for thermal insulation > by insulating layers

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
STORING OR DISTRIBUTING GASES OR LIQUIDS
Subclass:
VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES

1 direct subcode

Child Classifications

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  • F17C 3/06 on the inner surface, i.e. in contact with the stored fluid

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