Hydrodynamic or hydrostatic features of hulls or of hydrofoils (hulls peculiar to submarines B63B3/13; keels B63B3/38)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Hydrodynamic or hydrostatic features of hulls or of hydrofoils

CPC: Hydrodynamic or hydrostatic features of hulls or of hydrofoils (hulls peculiar to submarines B63B3/13; keels B63B3/38)

Full Title

Full titles differ between systems:

IPC:

Hydrodynamic or hydrostatic features of hulls or of hydrofoils

CPC:

Hydrodynamic or hydrostatic features of hulls or of hydrofoils (hulls peculiar to submarines B63B3/13; keels B63B3/38)

Additional Content IPC

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

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B63B 1/02 deriving lift mainly from water displacement (B63B1/16 takes precedence) IPC+CPC Available in IPC and CPC
B63B 1/16 deriving additional lift from hydrodynamic forces IPC+CPC Available in IPC and CPC
B63B 1/32 Other means for varying the inherent hydrodynamic characteristics of hulls +3 CPC IPC+CPC Available in IPC and CPC
B63B 2001/005 2nd only CPC only CPC only

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