Hydrodynamic or hydrostatic features of hulls or of hydrofoils

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
Subclass:: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING

Additional Content

Glossary

Hydrofoil hydrofoils A wing-like structure positioned below a hull which creates hydrodynamic lift when a vessel is moved through the water at speed. The term is also used to describe vessels which use hydrofoil features to lift the hull out of the water at speed, thereby reducing drag. Planing surface planing surfaces Part of the hull of a light water craft of the hydroplane type which generates hydrodynamic lift when skimming over the water surface at high speed.

Limiting references

Determining hydrodynamic or hydrostatic features

3 direct subcodes

Child Classifications

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B63B 1/02 deriving lift mainly from water displacement
B63B 1/16 deriving additional lift from hydrodynamic forces
B63B 1/32 Other means for varying the inherent hydrodynamic characteristics of hulls

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