IPC Subgroup
B63B 21/48 Sea-anchors; Drogues
Introduced: September 1968
Last revised: January 2006
Full Title
Tying-up; Shifting, towing, or pushing equipment; Anchoring > Anchors > Sea-anchors; Drogues
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
Drogue Drogues A funnel-like device deployed in the water behind a vessel to create drag in order to reduce vessel speed or improve stability.
Related Keywords
DROGUES or sea anchorsSEA anchors
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