ClassID:

200169

G21C7/117 - 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 solid control elements, e.g. control rods; Construction of control elements Clusters of control rods; Spider construction

Recent Application in this class:
#1
20260155266
2026-06-04

CONTROL ROD FIXING MECHANISM FOR CONTROL ROD ASSEMBLY USING BOLTED TIGHT FIT

#2
20260142045
2026-05-21

CONTROL ROD ASSEMBLY WITH ENHANCED CONTROL ROD WORTH USING HIGHLY ENRICHED B4C

#3
20260142044
2026-05-21

CONTROL ROD ASSEMBLY WITH ENHANCED CONTROL ROD WORTH USING 28 NEUTRON ABSORBER RODS

#4
20260142043
2026-05-21

CONTROL ROD ASSEMBLY WITH ENHANCED CONTROL ROD WORTH

#5
20250259758
2025-08-14

IMPROVED NUCLEAR FUEL ASSEMBLY WITH ENHANCED SEISMIC PERFORMANCE AND CONTROL ROD WORTH

#6
20250157678
2025-05-15

INTEGRATED FUEL AND CONTROL SYSTEM

#7
20250069763
2025-02-27

FUEL ASSEMBLY FOR A NUCLEAR POWER PLANT, METHOD FOR ACTIVATING A MATERIAL TO BE ACTIVATED AND GRIPPER

#8
20240339231
2024-10-10

DRILLHOLE NUCLEAR REACTOR

#9
20240266081
2024-08-08

NUCLEAR FUEL CORE AND METHODS OF FUELING AND/OR DEFUELING A NUCLEAR REACTOR, CONTROL ROD DRIVE SYSTEM FOR NUCLEAR REACTOR, SHUTDOWN SYSTEM FOR NUCLEAR STEAM SUPPLY SYSTEM, NUCLEAR REACTOR SHROUD, AND/OR LOSS-OF-COOLANT ACCIDENT REACTOR COOLING SYSTEM

#10
20230162875
2023-05-25

CONTROL ROD DAMPING SYSTEM

#11
20230139641
2023-05-04

CONTROL ROD REMOTE HOLDOUT MECHANISM

#12
20230137322
2023-05-04

Control rod remote disconnect mechanism

#13
20230134417
2023-05-04

CONTROL ROD REMOTE DISCONNECT MECHANISM

#14
20230133343
2023-05-04

Control rod remote holdout mechanism

#15
20220406477
2022-12-22

Methods and devices to improve performances of RCCA and CEA to mitigate clad strain in the high fluence region

#16
20220115153
2022-04-14

Sheet based, in-bundle reactivity control device for storage of spent nuclear fuel

#17
20210398695
2021-12-23

Control rod damping system

#18
20210210221
2021-07-08

Control rod drive system for nuclear reactor

#19
20200373027
2020-11-26

Small modular mobile fission reactor

#20
20200043617
2020-02-06

Method of installing an external dashpot tube around a control rod guide tube in a nuclear fuel assembly

#21
20190287690
2019-09-19

Method and device for unlatching control rod drive shafts in pressurized water reactors

#22
20190115113
2019-04-18

Magneto-rheological nuclear reactivity distribution control elements

#23
20180374590
2018-12-27

Absorber rod assembly for nuclear reactor

#24
20180277261
2018-09-27

Control rod guide tube with an extended intermediate guide assembly

#25
20180261338
2018-09-13

Extruded guide frame and manufacturing methods thereof

#26
20180197640
2018-07-12

Fuel assembly with an external dashpot disposed around a guide tube portion

#27
20180190393
2018-07-05

Control rod damping system

#28
20180190392
2018-07-05

Control rod drive mechanism (CRDM) with remote disconnect mechanism

#29
20170301419
2017-10-19

Method of operating a pressurized-water nuclear reactor allowing same to pass from a plutonium equilibrium cycle to a uranium equilibrium cycle and corresponding nuclear fuel assembly

#30
20160372222
2016-12-22

Method for controlling a pressurized water nuclear reactor during stretchout

#31
20160254065
2016-09-01

Control rod/control rod drive mechanism couplings

#32
20160247584
2016-08-25

Method of forming a support structure for a control rod assembly of a nuclear reactor

#33
20160093407
2016-03-31

Pressurized water reactor fuel assembly

#34
20150357055
2015-12-10

Control rod guide tube with an extended intermediate guide assembly

#35
20150206605
2015-07-23

Control rod/control rod drive mechanism couplings

#36
20140348285
2014-11-27

Control rod-driving control apparatus and a method thereof

#37
20140334586
2014-11-13

CRDM designs with separate SCRAM latch engagement and locking

#38
20140270036
2014-09-18

CRDM with separate SCRAM latch engagement and locking

#39
20140247915
2014-09-04

METHOD FOR PRODUCING A WEAR-RESISTANT AND CORROSION-RESISTANT STAINLESS STEEL PART FOR A NUCLEAR REACTOR, CORRESPONDING PART AND CORRESPONDING CONTROL CLUSTER

#40
20140126681
2014-05-08

Support pin replacing apparatus for control rod cluster guide tube

#41
20130329847
2013-12-12

Nuclear control rod with flexure joint

#42
20130287158
2013-10-31

Suspended upper internals with tie rod couplings for compact nuclear reactor

#43
20130272464
2013-10-17

Control rod assembly impact limiter

#44
20130148773
2013-06-13

Control rod with outer hafnium skin

#45
20130051510
2013-02-28

Control rod for a nuclear power light water reactor

#46
20120230459
2012-09-13

Method of improving wear and corrosion resistance of rod control cluster assemblies

#47
20120189089
2012-07-26

Method of operating a pressurized-water nuclear reactor allowing same to pass from a plutonium-equilibrium cycle to a uranium-equilibrium cycle and corresponding nuclear fuel assembly

#48
20120163525
2012-06-28

Method of operating a pressurized-water nuclear reactor for reaching a plutonium equilibrium cycle

#49
20120099691
2012-04-26

Support structure for a control rod assembly of a nuclear reactor

#50
20120051482
2012-03-01

Terminal elements for coupling connecting rods and control rods in control rod assemblies for a nuclear reactor

#51
20110235769
2011-09-29

Control rod transfer device

#52
20100316177
2010-12-16

Control rod drive mechanism for nuclear reactor

#53
20100111243
2010-05-06

Fixed cluster having a spider-like support, corresponding pressurized water nuclear reactor core and assembly comprising a nuclear fuel assembly and such a fixed cluster

#54
20090034674
2009-02-05

NUCLEAR REACTOR CONTROL ROD

#55
20080253496
2008-10-16

Nuclear reactor control rod spider assembly

#56
20060034412
2006-02-16

Cluster for adjusting a nuclear reactor core reactivity, absorber rod of the cluster and method for protecting the absorber rod against wear