B63B 21/56 Towing or pushing equipment (tugs B63B35/66; towing arrangements for water sports use B63B34/60)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Towing or pushing equipment
CPC: Towing or pushing equipment (tugs B63B35/66; towing arrangements for water sports use B63B34/60)
Full Title
Full titles differ between systems:
Tying-up; Shifting, towing, or pushing equipment; Anchoring > Towing or pushing equipment
Tying-up; Shifting, towing, or pushing equipment; Anchoring ( dynamic anchoring B63H25/00 ) > Towing or pushing equipment (tugs B63B35/66; towing arrangements for water sports use B63B34/60)
Of 6 combined children, 4 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B63B 21/58 Adaptations of hooks for towing; Towing-hook mountings (hooks in general F16B) IPC+CPC Available in IPC and CPC
- B63B 21/62 characterised by moving of more than one vessel (rigid interconnections between pontoons B63B35/38) IPC+CPC Available in IPC and CPC
- B63B 21/64 Equipment for towing or pushing vessels by vehicles or beings moving forward on ground-based paths along water-way (boat-hooks or the like B63B21/54) since 1974 IPC+CPC Available in IPC and CPC
- B63B 21/66 Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables ( salvaging underwater vessels or objects B63C7/00; towed underwater vessels B63G8/42) since 1980 +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B63,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG HEAVY INDUSTRIES KR 5,719
- DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 4,684
- HYUNDAI HEAVY INDUSTRIES COMPANY KR 3,015
- ZHEJIANG OCEAN UNIVERSITY 1,359
- HUDONG-ZHONGHUA SHIPBUILDING (GROUP) COMPANY 1,221
- HARBIN ENGINEERING UNIVERSITY 1,175
- SHANGHAI WAIGAOQIAO SHIPBUILDING COMPANY 1,129
- CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY 1,113
- GUANGZHOU SHIPYARD INTERNATIONAL COMPANY 1,073
- JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY 963
Top Applicants (CPC)
Class B63,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG HEAVY INDUSTRIES KR 4,830
- DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 4,093
- HYUNDAI HEAVY INDUSTRIES COMPANY KR 2,639
- GAZ TRANSPORT ET TECHNIGAZ FR 1,037
- SHANGHAI WAIGAOQIAO SHIPBUILDING COMPANY 827
- HARBIN ENGINEERING UNIVERSITY 811
- GUANGZHOU SHIPYARD INTERNATIONAL COMPANY 808
- HUDONG-ZHONGHUA SHIPBUILDING (GROUP) COMPANY 784
- YAMAHA MOTOR COMPANY JP 731
- THYSSEN KRUPP DE 727