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DIFF Subgroup
B63B 21/24

Anchors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Tying-up; Shifting, towing, or pushing equipment; Anchoring > Anchors

CPC:

Tying-up; Shifting, towing, or pushing equipment; Anchoring ( dynamic anchoring B63H25/00 ) > Anchors

Of 7 combined children, 5 exist in both systems.

2 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • B63B 2021/246 2nd only CPC only CPC only
  • B63B 21/243 CPC only CPC only
  • B63B 21/46 with variable sliding, connection to the chain IPC+CPC Available in IPC and CPC
  • B63B 21/48 Sea-anchors; Drogues 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