CPC Subgroup
B63H 3/02 actuated by control element coaxial with propeller shaft, e.g. the control element being rotary
Full Title
Propeller-blade pitch changing > actuated by control element coaxial with propeller shaft, e.g. the control element being rotary
1 direct subcode
Child Classifications
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- B63H 3/04 the control element being reciprocatable
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