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DIFF Main Group
B63B 73/00

Building or assembling vessels or marine structures, e.g. hulls or offshore platforms

Introduced: January 2020

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

IPC defines codes here since 2020.

Child Classifications

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  • B63B 73/10 Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections since 2020 IPC+CPC Available in IPC and CPC
  • B63B 73/20 Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks since 2020 IPC+CPC Available in IPC and CPC
  • B63B 73/30 Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating since 2020 IPC+CPC Available in IPC and CPC
  • B63B 73/50 characterised by forming methods, e.g. manufacturing of curved blocks since 2020 IPC+CPC Available in IPC and CPC
  • B63B 73/60 characterised by the use of specific tools or equipment; characterised by automation, e.g. use of robots since 2020 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B63,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG HEAVY INDUSTRIES KR 5,719
  2. DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 4,684
  3. HYUNDAI HEAVY INDUSTRIES COMPANY KR 3,015
  4. ZHEJIANG OCEAN UNIVERSITY 1,359
  5. HUDONG-ZHONGHUA SHIPBUILDING (GROUP) COMPANY 1,221
  6. HARBIN ENGINEERING UNIVERSITY 1,175
  7. SHANGHAI WAIGAOQIAO SHIPBUILDING COMPANY 1,129
  8. CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY 1,113
  9. GUANGZHOU SHIPYARD INTERNATIONAL COMPANY 1,073
  10. JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY 963

Top Applicants (CPC)

Class B63,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG HEAVY INDUSTRIES KR 4,830
  2. DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 4,093
  3. HYUNDAI HEAVY INDUSTRIES COMPANY KR 2,639
  4. GAZ TRANSPORT ET TECHNIGAZ FR 1,037
  5. SHANGHAI WAIGAOQIAO SHIPBUILDING COMPANY 827
  6. HARBIN ENGINEERING UNIVERSITY 811
  7. GUANGZHOU SHIPYARD INTERNATIONAL COMPANY 808
  8. HUDONG-ZHONGHUA SHIPBUILDING (GROUP) COMPANY 784
  9. YAMAHA MOTOR COMPANY JP 731
  10. THYSSEN KRUPP DE 727