DIFF Main Group
B63H 21/00 Use of propulsion power plant or units on vessels
Introduced: September 1968
Of 14 combined children, 11 exist in both systems.
3 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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- B63H 21/02 the vessels being steam-driven (B63H21/18 takes precedence) IPC+CPC Available in IPC and CPC
- B63H 21/12 the vessels being motor-driven (B63H21/175, B63H21/18 take precedence; ) IPC+CPC Available in IPC and CPC
- B63H 21/175 the vessel being powered by land vehicle supported by vessel since 1985 IPC+CPC Available in IPC and CPC
- B63H 21/20 the vessels being powered by combinations of different types of propulsion units +1 CPC IPC+CPC Available in IPC and CPC
- B63H 21/21 Control means for engine or transmission, specially adapted for use on marine vessels since 1985 +2 CPC IPC+CPC Available in IPC and CPC
- B63H 21/22 the propulsion power units being controlled from exterior of engine room, e.g. from navigation bridge; Arrangements of order telegraphs IPC+CPC Available in IPC and CPC
- B63H 21/30 Mounting of propulsion plant or unit, e.g. for anti-vibration purposes (hull reinforcements therefor B63B3/70) +3 CPC IPC+CPC Available in IPC and CPC
- B63H 21/32 Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels IPC+CPC Available in IPC and CPC
- B63H 21/36 Covers or casing arranged to protect plant or unit from marine environment since 1985 IPC+CPC Available in IPC and CPC
- B63H 21/38 Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like ( lubricating or cooling machines or engines in general F01 - F04) since 1985 +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