ClassID:

71631

B63H21/38 - CPC Classification

Classification description:

Use of propulsion power plant or units on vessels Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like

Sub-classes:
Recent Application in this class:
#1
20260145769
2026-05-28

DEVICES AND METHODS FOR FIRE PROTECTION AND HEAT SHIELDING OF FILTER BOWLS

#2
20260077849
2026-03-19

A MARINE DRIVE UNIT WITH A BI-DIRECTIONAL INTEGRATED OIL CHANNEL

#3
20260062107
2026-03-05

SAIL DRIVE AND SHIP

#4
20250364580
2025-11-27

FUEL CELL SHIP

#5
20250304225
2025-10-02

CONTROL DEVICE FOR VESSEL FOR MANAGING VESSEL FUEL SYSTEM AND METHOD THEREOF

#6
20250271270
2025-08-28

METHOD AND DEVICE FOR OPTIMIZING SHIP NAVIGATION

#7
20250260030
2025-08-14

PFUEL CONDUCTING DEVICE FOR CONDUCTING FUEL, FUEL CELL ASSEMBLY, AND WATERCRAFT

#8
20250206431
2025-06-26

PERSONAL WATERCRAFT AND CONTROLLING METHOD OF THE SAME

#9
20250145269
2025-05-08

WATERCRAFT

#10
20250136262
2025-05-01

SYSTEM AND METHOD FOR TREATING BOIL-OFF GAS OF SHIP

#11
20250115344
2025-04-10

MAGNETOHYDRODYNAMIC SEAWATER PROPULSION THRUSTER

#12
20250101934
2025-03-27

GAS PURGING SYSTEM FOR SHIP

#13
20250075666
2025-03-06

System for supplying VOC as fuel for engine and vessel using VOC as fuel

#14
20240429784
2024-12-26

MOTOR, WATERCRAFT PROPELLER, AND WATERCRAFT

#15
20240413370
2024-12-12

SYSTEM FOR REPLENISHING AN ON-BOARD POWER SOURCE FOR A PROPULSION SYSTEM ON A VEHICLE SUCH AS A WATERCRAFT AND PROCESS

#16
20240391575
2024-11-28

PROPULSION MODULE, PROPULSION SYSTEM, WATERCRAFT AND RELATED METHODS

#17
20240301849
2024-09-12

Containerized alternative fuel control unit

#18
20240278981
2024-08-22

SHIPPING CONTAINER SYSTEM WITH INTEGRATED RECHARGEABLE BATTERY

#19
20240255144
2024-08-01

AN ARRANGEMENT HANDLING PURGED ALCOHOL-BASED FUEL AND A METHOD THEREOF

#20
20240255141
2024-08-01

METHOD AND ARRANGEMENT FOR HANDLING VENT GAS MIXTURE

#21
20240230033
2024-07-11

POWER-SAVING TYPE LIQUEFIED-GAS-FUEL SHIP AND METHOD FOR PROCESSING BOIL-OFF GAS FOR LIQUEFIED-GAS-FUEL SHIP

#22
20240067322
2024-02-29

Systems and methods for refueling an electric vehicle

#23
20240035871
2024-02-01

FUEL REMAINING AMOUNT MEASURING APPARATUS, BOAT, AND MOVABLE BODY

#24
20240002027
2024-01-04

AIR SUPPLY APPARATUS FOR A SHIP, SHIP INCLUDING THE SAME, AND METHOD OF SUPPLYING AIR TO AN AIR LUBRICATION DEVICE

#25
20230417206
2023-12-28

MARINE METHANOL INERT GAS BLANKETING

#26
20230415877
2023-12-28

AIR DIFFUSER INTENDED TO BE INSTALLED IN A COOLING ROTATING INTERFACE OF A PROPULSION ORIENTED DEVICE

#27
20230278671
2023-09-07

LIQUID CONTAINER

#28
20230182882
2023-06-15

Draining arrangement of a propulsion unit

#29
20230081154
2023-03-16

GAS TREATMENT SYSTEM AND SHIP INCLUDING SAME

#30
20230027991
2023-01-26

LNG STORAGE TANK AND SHIP HAVING THEREOF

#31
20230020034
2023-01-19

Fuel management system capable of freely performing transfer of fuel among a plurality of fuel tanks

#32
20230019057
2023-01-19

Boil-off gas reliquefaction system

#33
20220393198
2022-12-08

FUEL CELL SHIP

#34
20220388620
2022-12-08

FUEL CELL SHIP

#35
20220333555
2022-10-20

System and method for supplying fuel for ship

#36
20220324538
2022-10-13

ELECTRIC DRIVE SYSTEM FOR CRAFT, SUCH AS A SURFBOARD OR PADDLEBOARD, WITH COOLING MEANS

#37
20220242543
2022-08-04

Pod propulsion device

#38
20220228822
2022-07-21

COOLING DEVICE

#39
20220185441
2022-06-16

Fuel supply system for eco-friendly ship

#40
20220097816
2022-03-31

Driving unit for a tunnel thruster and a tunnel thruster with such driving unit

#41
20220048596
2022-02-17

SureFill

#42
20210249671
2021-08-12

Fuel cell power system for an unmanned surface vehicle

#43
20210148514
2021-05-20

Boil-off gas reliquefication system, method for discharging lubricating oil in boil-off gas reliquefication system, and engine fuel supply method

#44
20210129967
2021-05-06

Carbon negative energy generation system

#45
20200408160
2020-12-31

Marine engine

#46
20200391839
2020-12-17

Unmanned watercraft

#47
20200347810
2020-11-05

FUEL SYSTEM

#48
20200277036
2020-09-03

MOBILE CONTAINER-TANK MODULE

#49
20200277035
2020-09-03

Gas-electric parallel-serial hybrid marine power train system with LNG cooling

#50
20200255099
2020-08-13

Method and apparatus for transferring liquid cargo in pressurization type

#51
20200239109
2020-07-30

Boil-off gas reliquefaction system and method for discharging lubricanting oil in boil-off gas reliquefaction system

#52
20200231254
2020-07-23

OFFSHORE FLOATING FACILITY

#53
20200208780
2020-07-02

BOIL-OFF GAS RELIQUEFACTION SYSTEM

#54
20200208771
2020-07-02

System for circulating air through double pipes for supplying gas and air circulation method using same

#55
20200173406
2020-06-04

USE OF GASEOUS FUEL IN MARINE VESSELS

#56
20200156741
2020-05-21

BOIL-OFF GAS RELIQUEFACTION SYSTEM AND METHOD FOR SHIP AND METHOD FOR STARTING BOIL-OFF GAS RELIQUEFACTION SYSTEM FOR SHIP

#57
20200079485
2020-03-12

Boil-off gas re-liquefying system

#58
20200054990
2020-02-20

Apparatus and calculating method of pH

#59
20190389553
2019-12-26

Floating vessel with gearless pod propulsor having counter rotating propellers

#60
20190351988
2019-11-21

Boil-off gas re-liquefying method for LNG ship

#61
20190348696
2019-11-14

Fuel supply arrangement for a fuel cell system and fuel cell system

#62
20190301374
2019-10-03

Fuel consumption calculation of a fuel and water mixture

#63
20190285352
2019-09-19

Method of operating a heat exchanger

#64
20190285273
2019-09-19

Ship having plurality of fuel lines

#65
20190203667
2019-07-04

Gas treatment system and vessel including the same

#66
20190143773
2019-05-16

AMPHIBIOUS VEHICLE

#67
20190128160
2019-05-02

METHOD AND DEVICE FOR WASHING AND PURIFYING OCEAN ENGINEERING ENGINE TAIL GAS BY MEANS OF SEAWATER WITH ZERO ENERGY CONSUMPTION

#68
20190063684
2019-02-28

Ship having gas regasification system

#69
20190054991
2019-02-21

Propeller drive assembly and a screw pump for a water vessel

#70
20190041125
2019-02-07

Vessel comprising engine

#71
20190032852
2019-01-31

Ship including gas re-vaporizing system

#72
20190006686
2019-01-03

Fuel cell power system for an unmanned surface vehicle

#73
20180363975
2018-12-20

Vessel comprising engine

#74
20180327056
2018-11-15

Vessel

#75
20180320637
2018-11-08

Gas processing system and vessel including the same

#76
20180313497
2018-11-01

Method of an apparatus for treating boil-off gas for the purpose of supplying at least an engine

#77
20180312236
2018-11-01

Marine reduction gear

#78
20180312235
2018-11-01

Arrangement of cryogenic containers for LNG or CNG on a deck of a tugboat

#79
20180281901
2018-10-04

Marine surface vessel

#80
20180251194
2018-09-06

Fuel composition, ship, and automatic fuel composition-switching system

#81
20180201353
2018-07-19

Ship comprising engine

#82
20180194447
2018-07-12

Ship comprising engine

#83
20180170507
2018-06-21

Ship

#84
20180170506
2018-06-21

Ship

#85
20180170505
2018-06-21

Ship with boil-off gas liquefaction system

#86
20180170504
2018-06-21

Ship

#87
20180170503
2018-06-21

Ship

#88
20180163611
2018-06-14

Outboard motor

#89
20180162492
2018-06-14

SHIP

#90
20180148138
2018-05-31

BOIL-OFF GAS RE-LIQUEFYING SYSTEM

#91
20180050782
2018-02-22

Method for controlling the fuel consumption of a ship

#92
20180022432
2018-01-25

FUEL SUPPLY SYSTEM AND METHOD FOR SHIP ENGINE

#93
20180022431
2018-01-25

Fuel supply system and method for ship engine

#94
20180009511
2018-01-11

Natural gas hydrate tank container loading system enabling self-powered power generation and boil-off gas treatment

#95
20170313397
2017-11-02

Method and device for controlling energy-saving sailing of ship

#96
20170305521
2017-10-26

Propulsion unit for an aquatic vehicle comprising a hydraulic fluid conditioning module and a conditioning control method

#97
20170298847
2017-10-19

MODULES AND SUB-MODULES FOR USE IN CONVERTING A MARINE VESSEL TO GASEOUS FUEL

#98
20170267318
2017-09-21

Container ship and layout structure thereof

#99
20170259203
2017-09-14

Apparatus and calculating method of pH

#100
20170240013
2017-08-24

Amphibious vehicle

#101
20170217555
2017-08-03

SYSTEM AND METHOD FOR SUPPLYING FUEL

#102
20170217554
2017-08-03

FUEL SUPPLY CONTROL SYSTEM AND CONTROL METHOD

#103
20170214295
2017-07-27

Pod propulsion device and a method for cooling such

#104
20170183072
2017-06-29

Fuel tank arrangement of a marine vessel and method of operating a tank container of a marine vessel

#105
20170174306
2017-06-22

METHOD FOR OPERATING ENGINE FOR VESSEL

#106
20170158288
2017-06-08

SEMI-RIGID INFLATABLE WATERCRAFT

#107
20170121002
2017-05-04

Maintenance unit for an inboard marine engine

#108
20170067685
2017-03-09

SYSTEM AND METHOD FOR PROCESSING BOIL-OFF GAS

#109
20170050713
2017-02-23

FUEL GAS SUPPLY SYSTEM OF VESSEL

#110
20160362165
2016-12-15

System and method for controlling fuel supply to engine of ship

#111
20160258396
2016-09-08

Engine device

#112
20160251069
2016-09-01

Marine propulsion unit and a valve for a marine propulsion unit

#113
20160114876
2016-04-28

System and method for treating boil-off gas in ship

#114
20160101842
2016-04-14

FUEL TRANSFER AND STORAGE SYSTEMS AND METHODS

#115
20160096609
2016-04-07

Fuel gas supply system and method of ship

#116
20160090161
2016-03-31

Activation and operation mode system for an electro chemical battery for the propulsion of marine, in particular submarine means

#117
20160076433
2016-03-17

Boat motor flushing system

#118
20160052612
2016-02-25

Apparatus and method for transferring inflammable material on marine structure

#119
20160039512
2016-02-11

Boat propulsion device

#120
20160039511
2016-02-11

Fuel supply device, fuel supply method and boat propulsion device

#121
20160031541
2016-02-04

WATERCRAFT AND MARINE PROPULSION DEVICE

#122
20150375833
2015-12-31

Easy maintenance flying board

#123
20150323188
2015-11-12

ENCLOSED GAS FUEL DELIVERY SYSTEM

#124
20150316326
2015-11-05

3-D channel gas heat exchanger

#125
20150300301
2015-10-22

Liquefied gas treatment system for vessel

#126
20150285189
2015-10-08

Hybrid fuel supply system and method for engine of vessel

#127
20150259035
2015-09-17

Boat

#128
20150246715
2015-09-03

System for aiding the planing of planing boats

#129
20150217847
2015-08-06

PROPULSION APPARATUS FOR UNDERWATER DRIVING

#130
20150204486
2015-07-23

Operating gas system for an underwater vehicle, method for operating such an operating gas system and an underwater vehicle having such an operating gas system

#131
20150204256
2015-07-23

Boat propulsion device and float position determining method

#132
20150203182
2015-07-23

Propulsion unit for maritime vessel

#133
20150192093
2015-07-09

Fuel gas supply apparatus

#134
20150191236
2015-07-09

Motor Flushing System

#135
20150184618
2015-07-02

Apparatus and method for transferring inflammable material on marine structure

#136
20150184617
2015-07-02

Apparatus and method for supplying fuel to engine of ship

#137
20150121859
2015-05-07

Apparatus and method for supplying fuel to engine of ship

#138
20150040856
2015-02-12

Ship, fuel gas supply apparatus, and fuel gas supply method

#139
20140250921
2014-09-11

System for supplying liquefied natural gas fuel with leak detection

#140
20140141664
2014-05-22

Fleet protection attack craft

#141
20140090379
2014-04-03

Exhaust gas diverter and collection system for ocean going vessels

#142
20140026862
2014-01-30

Fuel supply device and outboard motor

#143
20130303038
2013-11-14

Rudder propeller with an underwater mechanism comprising a planetary gearing

#144
20130269633
2013-10-17

Fuel feeding system and method of operating a fuel feeding system

#145
20130137318
2013-05-30

Floating structure having an upper deck fuel tank

#146
20130078878
2013-03-28

Marine fuel system with spill control feature

#147
20130065461
2013-03-14

Small size floating vessel using a dual fuel system

#148
20130052891
2013-02-28

Outboard engine unit

#149
20120252285
2012-10-04

Ship alternatively running fuel gas main drive engine and fuel gas generator engine

#150
20120240874
2012-09-27

Ship for supplying liquified fuel gas

#151
20120216919
2012-08-30

LNG fuel tank system for at least one gas engine used for ship propulsion

#152
20120204776
2012-08-16

Hydraulic system for a watercraft

#153
20120152407
2012-06-21

Fuel tank with internal evaporative emission system

#154
20120152375
2012-06-21

Fuel tank with internal fuel shut-off system

#155
20120108116
2012-05-03

GAS-FIRED SUPERCONDUCTIVE ELECTRICALLY PROPELLED SHIP

#156
20120071045
2012-03-22

Marine propulsion system

#157
20120042855
2012-02-23

ULTRA LOW POWER MARINE FUEL POSLISHING SYSTEM

#158
20120009831
2012-01-12

Engine Flushing System

#159
20110318977
2011-12-29

Marine vessel propulsion apparatus

#160
20110257820
2011-10-20

Control device for vessel equipped with exhaust heat recovery system and the vessel equipped with the control device

#161
20110226173
2011-09-22

Fleet protection attack craft

#162
20110159753
2011-06-30

Personal watercraft

#163
20110088648
2011-04-21

Rigid primer bulb pump

#164
20110083629
2011-04-14

Rigid primer bulb pump

#165
20110070782
2011-03-24

MARINE PROPULSION SYSTEM

#166
20090253318
2009-10-08

MARINE VESSEL

#167
20090239426
2009-09-24

Fuel system for gas driven vessel

#168
20090203273
2009-08-13

No drill multiport drive shower

#169
20090199806
2009-08-13

Rigid primer bulb pump

#170
20090199575
2009-08-13

BOIL OFF GAS MANAGEMENT DURING SHIP-TO-SHIP TRANSFER OF LNG

#171
20090193780
2009-08-06

Power Generation System for a Marine Vessel

#172
20090111338
2009-04-30

Water jet propulsion boat

#173
20080065306
2008-03-13

Marine engine

#174
20080017451
2008-01-24

LUBRICATING STRUCTURE FOR MARINE DRIVE

#175
20060160441
2006-07-20

Outboard motor

#176
18162766
2025-08-26

Keel drive assembly for propelling and maneuvering a boat

#177
17900086
2023-04-04

Systems and methods for refueling an electric watercraft

#178
16725433
2022-11-22

Marine engine assembly

#179
15597487
2018-04-03

Boat leveling system

#180
14681039
2015-11-24

Floating vessel with appendages for reduced vibration and increased thruster capacity