ClassID:

200175

G21C7/22 - CPC Classification

Classification description:

Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of a fluid or fluent neutron-absorbing material, e.g. by adding neutron-absorbing material to the coolant

Recent Application in this class:
#1
20250259757
2025-08-14

DRILLHOLE NUCLEAR REACTOR

#2
20250182917
2025-06-05

NUCLEAR REACTOR SHUTDOWN SYSTEM AND METHOD OF NUCLEAR REACTOR SHUTDOWN

#3
20250149197
2025-05-08

Method for controlling a pressurized water reactor, computer program product and control system

#4
20250149193
2025-05-08

GADOLINIUM OXIDE NANO PARTICLES IN COOLANT FOR REACTIVITY CONTROL

#5
20240404716
2024-12-05

CONTROLLING A POWER OUTPUT OF A NUCLEAR REACTION USING CHEMICAL INJECTION

#6
20240355488
2024-10-24

PASSIVE CHEMICAL INJECTION SYSTEM FOR CONTROLLING A NUCLEAR REACTION BY DELIVERING A NEUTRON-ABSORBING CHEMICAL INTO A CONTAINMENT VESSEL

#7
20240339231
2024-10-10

DRILLHOLE NUCLEAR REACTOR

#8
20240339230
2024-10-10

A LOW PRESSURE WATER REACTOR AND A METHOD FOR CONTROLLING A LOW PRESSURE WATER REACTOR

#9
20240194360
2024-06-13

METHOD AND ASSEMBLY FOR CONTROLLING A NUCLEAR REACTOR, NUCLEAR REACTOR EQUIPPED WITH SUCH AN ASSEMBLY

#10
20230282376
2023-09-07

System that moves liquid fuel into and out of a nuclear reactor core to control reactivity

#11
20230260668
2023-08-17

Nuclear reactor passive reactivity control system

#12
20220367073
2022-11-17

Controlling a power output of a nuclear reaction using chemical injection

#13
20220246317
2022-08-04

Controlling a power output of a nuclear reactor without using control rods

#14
20210210224
2021-07-08

Molten fuel nuclear reactor

#15
20210202114
2021-07-01

Dry stand-by liquid control system for a nuclear reactor

#16
20200365285
2020-11-19

Subcritical reactivity monitor utilizing prompt self-powered in-core detectors

#17
20200321135
2020-10-08

Elimination of neutrons from nuclear reactions in a reactor, in particular clean laser boron-11 fusion without secondary contamination

#18
20200027604
2020-01-23

Controlling a power output of a nuclear reaction without control rods

#19
20200027603
2020-01-23

Controlling a power output of a nuclear reaction without control rods

#20
20200027592
2020-01-23

Boron injection system for controlling a nuclear reaction by delivering boron into a containment vessel

#21
20190115113
2019-04-18

Magneto-rheological nuclear reactivity distribution control elements

#22
20180277262
2018-09-27

Secondary shutdown structure of nuclear reactor by using sliding doors

#23
20180190394
2018-07-05

Nuclear fuel assembly for a thermal neutron reactor

#24
20180174693
2018-06-21

Device for passive protection of a nuclear reactor

#25
20180068750
2018-03-08

Molten fuel nuclear reactor with neutron reflecting coolant

#26
20170301421
2017-10-19

Molten fuel nuclear reactor with neutron reflecting coolant

#27
20170243664
2017-08-24

Reactivity control in a molten salt reactor

#28
20170140842
2017-05-18

Subcritical Reactivity Monitor Utilizing Prompt Self-Powered Incore Detectors

#29
20170092381
2017-03-30

Neutron reflector assembly for dynamic spectrum shifting

#30
20170076825
2017-03-16

Portable apparatus for the boration of continuously flowing water

#31
20160329116
2016-11-10

Method for operating a pressurized water reactor during load monitoring

#32
20160232995
2016-08-11

Magneto-rheological fluid based filter/reflector

#33
20150200021
2015-07-16

Passive shutdown system and method of operating a liquid metal cooled reactor using the same

#34
20130341555
2013-12-26

Method of fabricating liquid-metal coolants for nuclear reactors

#35
20130322588
2013-12-05

Nuclear reactor and power generation facility

#36
20130301773
2013-11-14

NUCLEAR REACTOR CONTROL METHOD AND APPARATUS

#37
20130177120
2013-07-11

Passive reactivity control apparatus

#38
20120288048
2012-11-15

Nuclear reactor control method and apparatus

#39
20120033776
2012-02-09

NUCLEAR REACTOR

#40
20060146976
2006-07-06

Nuclear reactor and means for inserting liquid neutron absorber into the core

#41
20050283553
2005-12-22

Event based operating system, method, and apparatus for instrumentation and control systems

#42
20050281368
2005-12-22

Software based control system for nuclear reactor standby liquid control (SLC) logic processor

#43
20050105672
2005-05-19

Device permitting the modulation of absorption, emission, moderation or reflection of radiation or a particle flow