ClassID:

200254

G21C15/257 - CPC Classification

Classification description:

Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants; Promoting flow of the coolant using heat-pipes

Recent Application in this class:
#1
20260081045
2026-03-19

HEAT PIPE REACTORS WITH ARBITRARY HEAT EXCHANGERS

#2
20250292918
2025-09-18

MICRO NUCLEAR REACTOR

#3
20250259757
2025-08-14

DRILLHOLE NUCLEAR REACTOR

#4
20250218613
2025-07-03

MOBILE HEAT PIPE COOLED FAST REACTOR SYSTEM

#5
20250079029
2025-03-06

THERMAL POWER CONVERSION SYSTEMS INCLUDING HEAT PIPES AND PHOTOVOLTAIC CELLS

#6
20250006383
2025-01-02

DEVICES, SYSTEMS, AND METHODS FOR ADJUSTING THE OUTPUT OF A REACTOR CORE

#7
20240312648
2024-09-19

NUCLEAR FUEL RODS AND HEAT PIPES IN A GRAPHITE MODERATOR MATRIX FOR A MICRO-REACTOR, WITH THE FUEL RODS HAVING FUEL PELLETS IN A BeO SLEEVE

#8
20240304347
2024-09-12

MULTI-MODE HEAT REMOVAL SYSTEMS FOR NUCLEAR REACTORS AND METHODS OF USING THE SAME

#9
20240274306
2024-08-15

HEAT PIPE HAVING A WICK BETWEEN CONCENTRIC INNER AND OUTER HOUSINGS, FOR USE IN HEAT REMOVAL FROM A NUCLEAR REACTOR CORE

#10
20240233966
2024-07-11

DEVICES, SYSTEMS, AND METHODS FOR COOLING A NUCLEAR REACTOR WITH HYDRIDE MODERATORS

#11
20240170169
2024-05-23

MODULAR THERMAL AND RADIATION SHIELDING WITH PASSIVE HEAT REMOVAL

#12
20240170168
2024-05-23

SOLID-STATE FLUID THERMAL BONDED HEAT PIPE MICRO-REACTOR

#13
20240021334
2024-01-18

ALKALI METAL REACTOR POWER SUPPLY

#14
20230420149
2023-12-28

Fuel, Heat Exchanger, and Instrumentation for Nuclear Reactors

#15
20230377763
2023-11-23

NUCLEAR REACTORS HAVING LIQUID METAL ALLOY FUELS AND/OR MODERATORS

#16
20230317306
2023-10-05

Heat pipe networks for heat removal, such as heat removal from nuclear reactors, and associated systems and methods

#17
20230279756
2023-09-07

Small modular nuclear reactor integrated energy systems for industrial applications, such as enhanced oil recovery operations

#18
20230170102
2023-06-01

Micro-reactor core mechanical support

#19
20230170101
2023-06-01

COMPACT PASSIVE DECAY HEAT REMOVAL SYSTEM FOR TRANSPORTABLE MICRO-REACTOR APPLICATIONS

#20
20230154634
2023-05-18

System having heat pipe passing through annulus of nuclear fuel element

#21
20230107838
2023-04-06

HIGH TEMPERATURE HYDRIDE MODERATOR ENABLING COMPACT AND HIGHER POWER DENSITY CORES IN NUCLEAR MICRO-REACTORS

#22
20230102811
2023-03-30

REACTOR BUILDING AND VESSEL SYSTEMS

#23
20230070156
2023-03-09

Metal wick crimping method for heat pipe internals

#24
20220406480
2022-12-22

Mobile heat pipe cooled fast reactor system

#25
20220359095
2022-11-10

Modular thermal and radiation shielding with passive heat removal

#26
20220246316
2022-08-04

Travelling wave reactor for space exploration

#27
20220238241
2022-07-28

Nuclear reactor core support system providing radial and axial support

#28
20220199271
2022-06-23

Dual-mode heat removal system that allows first direction natural circulation flow through a heat exchanger during nuclear reactor emergency cooling and allows opposite direction forced flow through the heat exchanger during decay heat removal

#29
20220172852
2022-06-02

Nuclear fuel rods and heat pipes in a graphite moderator matrix for a micro-reactor, with the fuel rods having fuel pellets in a BeO sleeve

#30
20220139581
2022-05-05

Heat pipe having a wick between concentric inner and outer housings, for use in heat removal from a nuclear reactor core

#31
20220139579
2022-05-05

Devices, systems, and methods for adjusting the output of a reactor core

#32
20220068513
2022-03-03

Heat transfer module

#33
20220051825
2022-02-17

Thermal power conversion systems including heat pipes and photovoltaic cells

#34
20220049906
2022-02-17

HEAT PIPES INCLUDING COMPOSITE WICKING STRUCTURES, AND ASSOCIATED METHODS OF MANUFACTURE

#35
20210335510
2021-10-28

Reactor core having both nuclear fuel and a heat pipe in a module located in a solid neutron moderator

#36
20210125737
2021-04-29

Heat pipe networks for heat removal, such as heat removal from nuclear reactors, and associated systems and methods

#37
20210110940
2021-04-15

Nuclear reactors having liquid metal alloy fuels and/or moderators

#38
20210027900
2021-01-28

Reactor core having both nuclear fuel and a heat pipe in a module located in a solid neutron moderator

#39
20200373029
2020-11-26

Mobile heat pipe cooled fast reactor system

#40
20200098483
2020-03-26

Steam generator for nuclear steam supply system

#41
20200027588
2020-01-23

Control rod drive mechanism with heat pipe cooling

#42
20190333651
2019-10-31

Steam generator for nuclear steam supply system

#43
20190096536
2019-03-28

PLATE TYPE NUCLEAR MICRO REACTOR

#44
20180299207
2018-10-18

COOLER, COOLING APPARATUS USING THE SAME, AND METHOD FOR COOLING HEAT GENERATION ELEMENT

#45
20180268950
2018-09-20

Nuclear reactors including heat exchangers and heat pipes extending from a core of the nuclear reactor into the heat exchanger and related methods

#46
20180226159
2018-08-09

Modular nuclear reactors including fuel elements and heat pipes extending through grid plates, and methods of forming the modular nuclear reactors

#47
20180075931
2018-03-15

Heat pipe molten salt fast reactor with stagnant liquid core

#48
20180047465
2018-02-15

System, a device and a method for passive decay heat transport

#49
20180033501
2018-02-01

Nuclear reactor and a method of heat transfer from a core

#50
20170263341
2017-09-14

Reactor coolant system piping temperature distribution measurement system

#51
20160232996
2016-08-11

Steam generator with inclined tube sheet

#52
20160196886
2016-07-07

Reactor Cooling System

#53
20160196885
2016-07-07

Steam generator for nuclear steam supply system

#54
20160027536
2016-01-28

Mobile heat pipe cooled fast reactor system

#55
20160012924
2016-01-14

Electric fission reactor for space applications

#56
20150235719
2015-08-20

Leidenpump

#57
20150060018
2015-03-05

Heat pipe based passive residual heat removal system for spent fuel pool

#58
20130156143
2013-06-20

EMERGENCY CORE COOLING SYSTEM (ECCS) FOR NUCLEAR REACTOR EMPLOYING CLOSED HEAT TRANSFER PATHWAYS

#59
20120279543
2012-11-08

Power converter

#60
20100040187
2010-02-18

Heat pipe nuclear fission deflagration wave reactor cooling

#61
20050089130
2005-04-28

Methods and apparatuses for removing thermal energy from a nuclear reactor

#62
18166835
2026-05-26

Nuclear reactor system arranged to inject material into heat pipes to suppress a fire

#63
17835247
2025-11-25

Heat pipe reactors with arbitrary heat exchangers

#64
17696491
2024-01-23

Counter gravity heat pipe techniques

#65
17176752
2024-12-24

Moderated nuclear reactor

#66
16822486
2024-05-28

Multi-directional heat pipes

#67
16186090
2022-03-08

Creep and cascade failure mitigation in heat pipe reactors

#68
15921800
2022-05-24

Counter gravity heat pipe techniques

#69
15873517
2018-07-24

Heat pipe dry cooling system

#70
15828933
2021-10-26

Heat pipe reactor core and heat exchangers formation and deployment