ClassID:

200372

G21D5/02 - CPC Classification

Classification description:

Arrangements of reactor and engine in which reactor-produced heat is converted into mechanical energy Reactor and engine structurally combined, e.g. portable

Recent Application in this class:
#1
20260120902
2026-04-30

DEPLOYMENT METHOD AND SYSTEMS FOR MOLTEN SALT REACTORS

#2
20260117726
2026-04-30

RADIAL IN-FLOW PARTICLE BED NUCLEAR ROCKET ENGINE AND METHOD

#3
20260100291
2026-04-09

NUCLEAR REACTOR CORE ARCHITECTURE WITH ENHANCED HEAT TRANSFER AND SAFETY

#4
20250285776
2025-09-11

ENERGY SOURCE

#5
20250266178
2025-08-21

THERMAL POWER REACTOR

#6
20250182918
2025-06-05

DEPLOYMENT METHOD AND SYSTEMS FOR MOLTEN SALT REACTORS

#7
20250066045
2025-02-27

NUCLEAR THERMAL PROPULSION SYSTEM WITH REACTOR DIRECT DRIVE OF CRYOCOOLER TURBINE

#8
20240420859
2024-12-19

Mixed Particle Nuclear Reactions

#9
20240371534
2024-11-07

NUCLEAR REACTOR FUEL ASSEMBLIES AND PROCESS FOR PRODUCTION

#10
20240331886
2024-10-03

TRANSPORTABLE SUB-CRITICAL MODULES DISPOSED IN INTERMODAL TRANSPORT CONTAINER FOR POWER GENERATION

#11
20240278938
2024-08-22

Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine

#12
20240266077
2024-08-08

FUNCTIONALLY GRADED LATTICE CERMET FUEL STRUCTURE WITH SHAPE CORRESPONDING TO A MATHEMATICALLY-BASED PERIODIC SOLID, PARTICULARLY FOR NUCLEAR THERMAL PROPULSION APPLICATIONS

#13
20240229744
2024-07-11

High Speed Aircraft Propelled by Thorium or Uranium Fueled Molten Salt Reactor

#14
20240038406
2024-02-01

Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications

#15
20240038405
2024-02-01

Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications

#16
20230415926
2023-12-28

Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine

#17
20230352201
2023-11-02

ENERGY SOURCE

#18
20230326618
2023-10-12

CARBIDE-BASED FUEL ASSEMBLY FOR THERMAL PROPULSION APPLICATIONS

#19
20230317305
2023-10-05

Carbide-based fuel assembly for thermal propulsion applications

#20
20230290528
2023-09-14

RADIATION SHIELDING FOR COMPACT AND TRANSPORTABLE NUCLEAR POWER SYSTEMS

#21
20230282373
2023-09-07

FUEL BUNDLE WITH TWISTED RIBBON FUEL RODLETS FOR NUCLEAR THERMAL PROPULSION APPLICATIONS, STRUCTURES FOR MANUFACTURE, AND METHODS OF MANUFACTURE

#22
20230253128
2023-08-10

ENGINE COMPRISING A DEVICE FOR INDUCING NUCLEAR FUSION REACTIONS BY ACCELERATED IONS

#23
20230230714
2023-07-20

CONTROL DRUM CONTROLLER FOR NUCLEAR REACTOR SYSTEM

#24
20230211898
2023-07-06

COMBINED AMMONIA-BASED MODERATOR AND PROPELLANT FOR NUCLEAR THERMAL PROPULSION STAGES

#25
20230170101
2023-06-01

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

#26
20230107838
2023-04-06

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

#27
20230040232
2023-02-09

METHOD OF OBTAINING TRANSURANIC ELEMENTS AND CREATING A NANOFUEL FROM THE TRANSURANIC ELEMENTS

#28
20220406480
2022-12-22

Mobile heat pipe cooled fast reactor system

#29
20220399135
2022-12-15

THERMAL POWER REACTOR

#30
20220375641
2022-11-24

ADJUSTING WAIT TIME BETWEEN BURN CYCLES OR MERGING BURN CYCLES

#31
20220367077
2022-11-17

Space-Based Radioisotope Production and Methods of Use

#32
20220351870
2022-11-03

Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion

#33
20220344067
2022-10-27

SPACE NUCLEAR PROPULSION REACTOR AFT PLENUM ASSEMBLY

#34
20220328202
2022-10-13

AUTOMATIC SHUTDOWN CONTROLLER FOR NUCLEAR REACTOR SYSTEM WITH CONTROL DRUMS

#35
20220301732
2022-09-22

NUCLEAR REACTOR CORE ARCHITECTURE WITH ENHANCED HEAT TRANSFER AND SAFETY

#36
20220267031
2022-08-25

NTAC augmented nuclear electric propulsion and/or nuclear thermal propulsion

#37
20220115156
2022-04-14

Transportable sub-critical modules disposed in intermodal transport container for power generation

#38
20220115152
2022-04-14

Carbide-based fuel assembly for thermal propulsion applications

#39
20220055774
2022-02-24

OPTO-MECHANIC DRIVEN LASER-BORON FUSION FOR DRIVING OF SPACECRAFTS

#40
20220013243
2022-01-13

Neutron moderation modules

#41
20210375495
2021-12-02

Nuclear reactor fuel assemblies and process for production

#42
20210110946
2021-04-15

Integrated system for converting nuclear energy into electrical, mechanical, and thermal energy

#43
20210082587
2021-03-18

Control drum system for use with nuclear reactors

#44
20200411205
2020-12-31

Floating nuclear reactor protection system

#45
20200373029
2020-11-26

Mobile heat pipe cooled fast reactor system

#46
20200365290
2020-11-19

Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications

#47
20200357531
2020-11-12

Nuclear thermal propulsion nuclear reactor interface structure

#48
20200273588
2020-08-27

Variable propellant density for passive reactivity control of nuclear thermal propulsion reactors

#49
20200265964
2020-08-20

Internal-external hybrid microreactor in a compact configuration

#50
20200161011
2020-05-21

Cooling facility in a reactor vessel and electric power generation system

#51
20200005955
2020-01-02

Integrated system for converting nuclear energy into rotational and thermal energy

#52
20200005954
2020-01-02

Integrated system for converting nuclear energy into electrical, rotational and thermal energy

#53
20200005953
2020-01-02

Integrated system for converting nuclear energy into electrical, rotational, and thermal energy

#54
20190164655
2019-05-30

Floating nuclear power reactor with a self-cooling containment structure

#55
20190148027
2019-05-16

Integrated system for converting nuclear energy into electrical, rotational, and thermal energy

#56
20180172362
2018-06-21

Modular power unit

#57
20180170496
2018-06-21

Method of using nanofuel in a nanofuel internal engine

#58
20180090237
2018-03-29

Transportable sub-critical modules for nuclear power generation

#59
20180033501
2018-02-01

Nuclear reactor and a method of heat transfer from a core

#60
20170263345
2017-09-14

Passive reactivity control of nuclear thermal propulsion reactors

#61
20170069402
2017-03-09

Nanofuel internal engine

#62
20160314859
2016-10-27

Floating nuclear power reactor with a self-cooling containment structure

#63
20160049210
2016-02-18

Modular transportable nuclear generator

#64
20160012924
2016-01-14

Electric fission reactor for space applications

#65
20150170771
2015-06-18

Floating nuclear power reactor with a self-cooling multiple component containment structure and an automatic radiation scrubbing containment structure

#66
20150170770
2015-06-18

Floating nuclear power reactor with a self-cooling containment structure

#67
20150052886
2015-02-26

Nuclear powered rotary internal engine apparatus

#68
20150000251
2015-01-01

System, method and apparatus for lean combustion with plasma from an electrical arc

#69
20140260179
2014-09-18

System, method and apparatus for lean combustion with plasma from an electrical arc

#70
20130259186
2013-10-03

Nuclear energy, metal fuel, H/ O from HO, with MHD power and propulsion for one month astronaut rocket voyages to Mars

#71
20130042594
2013-02-21

Terrestrial power and propulsion from nuclear or renewable metal fuels with magnetohydrodynamics

#72
20120328068
2012-12-27

Decay heat conversion to electricity and related methods

#73
20120036829
2012-02-16

System, method and apparatus for lean combustion with plasma from an electrical arc

#74
20090242704
2009-10-01

In orbit space transportation and recovery system

#75
20090235637
2009-09-24

System, method and apparatus for lean combustion with plasma from an electrical arc

#76
20080232533
2008-09-25

High flux sub-critical reactor for nuclear waste transmulation

#77
20070127617
2007-06-07

Nuclear fission fragment kinetic energy rocket engine

#78
20070114334
2007-05-24

Orbit space transportation and recovery system

#79
20070108349
2007-05-17

In orbit space transportation and recovery system

#80
20070040067
2007-02-22

Orbit space transportation and recovery system

#81
20060056570
2006-03-16

Fission fragment propulsion for space applications

#82
20050151022
2005-07-14

In orbit space transportation and recovery system

#83
18233765
2025-02-25

Radial in-flow particle bed nuclear rocket engine and method

#84
18233554
2025-09-09

Radial in-flow particle bed nuclear rocket engine and method

#85
17820512
2023-12-19

Reactor rocket engine

#86
14851665
2016-05-24

Nuclear thermal propulsion rocket engine

#87
14518075
2018-09-04

Advanced protective coatings for gr-based nuclear propulsion fuel elements

#88
12862510
2015-05-05

Aerospace laser ignition/ablation variable high precision thruster