IPC Subgroup
B63H 21/12 the vessels being motor-driven
Introduced: September 1968
Last revised: January 2006
Full Title
Use of propulsion power plant or units on vessels > the vessels being motor-driven
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- Subclass:
- MARINE PROPULSION OR STEERING
4 direct subcodes
Child Classifications
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- B63H 21/14 relating to internal-combustion engines
- B63H 21/16 relating to gas turbines
- B63H 21/165 by hydraulic fluid motor, i.e. wherein a liquid under pressure is utilised to rotate the propelling means
- B63H 21/17 by electric motor
Top Applicants
Top 10 applicants by patent filingsfor 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