B63H MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00)
Description
B63H encompasses propulsion and steering systems for waterborne vessels, including propellers, screws, jets, paddle wheels, and rudders. The class covers the mechanical and hydrodynamic design of marine propulsion devices, steering mechanisms, and associated control systems. This includes arrangements for mounting propulsion units, thrust transmission, and directional control of ships and other water-based craft. Adjacent classes address hull design (B63B), vessel-specific systems (B63C), and related marine equipment, while B63H focuses specifically on the propulsion and steering functionalities themselves.
Filing statistics
CPC subclass B63H recorded 35,971 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,557 in 2013 to 3,548 in 2023 (+39%), peaking at 4,036 applications in 2022. The most active applicants in class B63 are SAMSUNG HEAVY INDUSTRIES (4,830 applications), DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY (4,093 applications) and HYUNDAI HEAVY INDUSTRIES COMPANY (2,639 applications).
Source: EPO PATSTAT, worldwide filings
15 direct subcodes
Child Classifications
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- B63H 1/00 Propulsive elements directly acting on water (jet propulsion B63H11/00)
- B63H 11/00 Marine propulsion by water jets
- B63H 13/00 Marine propulsion by wind motors driving water-engaging propulsive elements
- B63H 15/00 Marine propulsion by use of vessel-mounted driving mechanisms co-operating with anchored chains or the like
- B63H 16/00 Marine propulsion by muscle power
- B63H 19/00 Marine propulsion not otherwise provided for
- B63H 20/00 Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H 21/00 Use of propulsion power plant or units on vessels
- B63H 23/00 Transmitting power from propulsion power plant to propulsive elements (adaptation of transmission to allow adjustment in direction of propellers B63H5/125; transmission between wind motors and propulsive elements B63H13/00; in outboard propulsion units B63H20/14; adaptation of transmission to allow adjustment of location of propellers B63H20/08)
- B63H 25/00 Steering; Slowing-down otherwise than by use of propulsive elements (using movably-installed outboard propulsion units B63H20/00); Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H 3/00 Propeller-blade pitch changing
- B63H 5/00 Arrangements on vessels of propulsion elements directly acting on water
- B63H 7/00 Propulsion directly actuated on air (jet propulsion B63H11/00)
- B63H 8/00 Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
- B63H 9/00 Marine propulsion provided directly by wind power (wind-motors driving underwater propulsive elements B63H13/00)
Top Applicants
Top 10 applicants by patent filingsfor 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