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IPC Subclass
B63J

AUXILIARIES ON VESSELS

Introduced: September 1968

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
Subclass:
AUXILIARIES ON VESSELS

Description

B63J encompasses auxiliary systems and equipment installed on ships and waterborne vessels to support primary operations. This subclass covers devices for vessel propulsion assistance, maneuvering, stabilization, and onboard utilities such as anchoring systems, mooring equipment, and auxiliary power generation. The classification includes technologies for improving vessel handling, safety, and operational efficiency but excludes primary hull structures (B63B) and main propulsion machinery (B63H), which are classified separately.

Filing statistics

IPC subclass B63J recorded 12,759 patent applications worldwide between 2013 and 2023. Annual filings grew from 819 in 2013 to 1,438 in 2023 (+76%), peaking at 1,462 applications in 2022. The most active applicants in class B63 are SAMSUNG HEAVY INDUSTRIES (5,719 applications), DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY (4,684 applications) and HYUNDAI HEAVY INDUSTRIES COMPANY (3,015 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

auxiliaries for SHIP(S)auxiliaries for water-borne VESSEL(S)

5 direct subcodes

Child Classifications

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  • B63J 1/00 Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
  • B63J 4/00 Arrangements of installations for treating waste-water or sewage
  • B63J 99/00 Subject matter not provided for in other groups of this subclass

Top Applicants

Top 10 applicants by patent filingsfor 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