ClassID:

200187

G21C9/004 - CPC Classification

Classification description:

Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices Pressure suppression

Sub-classes:
Recent Application in this class:
#1
20250336553
2025-10-30

PRESSURIZER VALVE DEVICE AND REACTOR FACILITY INCLUDING THE SAME

#2
20240376996
2024-11-14

DEPRESSURISATION VALVE

#3
20240355489
2024-10-24

DEPRESSURISATION VALVE

#4
20240312650
2024-09-19

BOILING WATER REACTORS

#5
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

#6
20240233967
2024-07-11

ORGANIC IODINE TRAPPING APPARATUS AND ORGANIC IODINE TRAPPING METHOD

#7
20240071636
2024-02-29

INTEGRATED NUCLEAR REACTOR SYSTEM INCLUDING DOUBLE CONTAINMENT STRUCTURE USING LIQUID NITROGEN

#8
20230311058
2023-10-05

FILTER FOR REMOVING RADIOACTIVE NOBLE GAS, FILTER UNIT AND REACTOR CONTAINMENT VENT SYSTEM

#9
20220406478
2022-12-22

Depressurisation valve

#10
20220319729
2022-10-06

Reactor Containment Vessel Vent System

#11
20220215974
2022-07-07

Injecting reactant into a spent fuel pool to react with radioactive effluent released into the pool from a nuclear reactor containment

#12
20220051813
2022-02-17

ORGANIC IODINE TRAPPING APPARATUS AND ORGANIC IODINE TRAPPING METHOD

#13
20210316248
2021-10-14

Organic iodine trapping apparatus

#14
20210210221
2021-07-08

Control rod drive system for nuclear reactor

#15
20210065922
2021-03-04

Emission monitoring system for a venting system of a nuclear power plant

#16
20210012913
2021-01-14

LOSS-OF-COOLANT ACCIDENT REACTOR COOLING SYSTEM

#17
20200395135
2020-12-17

INTEGRAL PRESSURE VESSEL PENETRATIONS AND SYSTEMS AND METHODS FOR USING AND FABRICATING THE SAME

#18
20200343012
2020-10-29

Reactor containment vessel vent system

#19
20200321136
2020-10-08

Very simplified boiling water reactors for commercial electricity generation

#20
20200234836
2020-07-23

System and method for reducing atmospheric release of radioactive materials caused by severe accident

#21
20200194134
2020-06-18

Depressurization valve

#22
20200176137
2020-06-04

PASSIVE REACTOR COOLING SYSTEM

#23
20190362861
2019-11-28

Inadvertent actuation block valve for a small modular nuclear reactor

#24
20190311817
2019-10-10

Containment building separation system at a nuclear power plant

#25
20190156960
2019-05-23

Reactor containment building spent fuel pool filter vent

#26
20180322966
2018-11-08

Very simplified boiling water reactors for commercial electricity generation

#27
20180254113
2018-09-06

Loss-of-coolant accident reactor cooling system

#28
20180144836
2018-05-24

Emergency and back-up cooling of nuclear fuel and reactors and fire-extinguishing, explosion prevention using liquid nitrogen

#29
20180130561
2018-05-10

Systems, Devices, and/or Methods for Managing Radiation Shielding

#30
20180029007
2018-02-01

Filtration material for filtered venting, and filtered venting device

#31
20170372805
2017-12-28

Containment internal passive heat removal system

#32
20170356557
2017-12-14

Vacuum breaker valve assembly

#33
20170229196
2017-08-10

Nuclear power plant that can automatically close a steam safety relief valve upon determination of exhaust pipe leakage

#34
20170206986
2017-07-20

Convective dry filtered containment venting system

#35
20170200515
2017-07-13

Passive reactor cooling system

#36
20170162281
2017-06-08

Passive containment cooling and filtered venting system, and nuclear power plant

#37
20170004892
2017-01-05

Passive cooling system of containment building and nuclear power plant comprising same

#38
20160329114
2016-11-10

Emergency and back-up cooling of nuclear fuel and reactors and fire-extinguishing, explosion prevention using liquid nitrogen

#39
20160268009
2016-09-15

Cooling System of Reactor Suppression Pool

#40
20160260507
2016-09-08

CONTAINMENT FILTERED VENTING SYSTEM (CFVS) FOR NUCLEAR POWER PLANT

#41
20160189809
2016-06-30

Nuclear power plant

#42
20160118149
2016-04-28

Emission monitoring system for a venting system of a nuclear power plant

#43
20160042816
2016-02-11

Reactor and operating method for the reactor

#44
20160019987
2016-01-21

Pressure relief system for the containment of a nuclear power facility, nuclear power facility and method of operating a pressure relief system

#45
20160019986
2016-01-21

Venting system for the containment of a nuclear plant and method of operating the venting system

#46
20150380115
2015-12-31

Liquid nitrogen emergency cooling system for nuclear power plants

#47
20150357063
2015-12-10

Nuclear power plant and reactor building gas treatment system

#48
20150243379
2015-08-27

Nuclear plant with a containment shell and with a pressure relief system

#49
20150235718
2015-08-20

REACTOR PRESSURE-RELIEVING FILTER SYSTEM

#50
20150221403
2015-08-06

Facility for reducing radioactive material and nuclear power plant having the same

#51
20150200022
2015-07-16

CONTAINMENT PROTECTION SYSTEM FOR A NUCLEAR FACILITY AND ASSOCIATED OPERATING METHOD

#52
20150194225
2015-07-09

Passively initiated depressurization valve for light water reactor

#53
20150170771
2015-06-18

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

#54
20150170769
2015-06-18

Passive reactor containment protection system

#55
20150117585
2015-04-30

Gas supply apparatus and air or nitrogen supply apparatus of nuclear plant

#56
20150049852
2015-02-19

Systems, methods, and filters for radioactive material capture

#57
20150043701
2015-02-12

Systems for debris mitigation in nuclear reactor safety systems

#58
20140376679
2014-12-25

Cooling system of nuclear reactor containment structure

#59
20140321597
2014-10-30

Loss-of-coolant accident reactor cooling system

#60
20140321596
2014-10-30

Passive reactor cooling system

#61
20140321595
2014-10-30

Submerged or underwater electricity production module

#62
20140301524
2014-10-09

Underwater electricity production module

#63
20140254738
2014-09-11

ALTERNATIVE AIR SUPPLY AND EXHAUST PORT FOR AIR-OPERATED VALVE

#64
20140241484
2014-08-28

PRESSURIZED WATER REACTOR DEPRESSURIZATION SYSTEM

#65
20140226779
2014-08-14

REACTOR PRESSURE VESSEL DEPRESSURIZATION SYSTEM AND MAIN STEAM SAFETY RELIEF VALVE DRIVE APPARATUS

#66
20140192947
2014-07-10

Submerged electricity production module

#67
20140161218
2014-06-12

Radioactive capture system for severe accident containment of light water reactors (LWRS), and method thereof

#68
20140112427
2014-04-24

Completely passive cooling system for reactor core after accident of large-scale pressurized water reactor nuclear power plant

#69
20140105348
2014-04-17

Emergency and back-up cooling of nuclear fuel and reactors

#70
20140072090
2014-03-13

METHOD AND SYSTEM FOR AN ALTERNATE RPV ENERGY REMOVAL PATH

#71
20140003568
2014-01-02

Nuclear technology plant and method for the pressure relief of a nuclear technology plant

#72
20140003567
2014-01-02

Nuclear power plant and passive containment cooling system

#73
20130301782
2013-11-14

Defense in depth safety paradigm for nuclear reactor

#74
20130259184
2013-10-03

Containment vessel and nuclear power plant

#75
20130259183
2013-10-03

Passive cooling and depressurization system and pressurized water nuclear power plant

#76
20130182812
2013-07-18

Method for depressurizing a nuclear power plant, depressurization system for a nuclear power plant, and associated nuclear power plant

#77
20130156145
2013-06-20

Method and apparatus for an alternative suppression pool cooling for boiling water reactors

#78
20130129034
2013-05-23

HYDROGEN VENTING DEVICE FOR COOLING WATER OF NUCLEAR REACTORS

#79
20130094623
2013-04-18

SAFETY/RELIEF VALVE DISCHARGE LINE HEADER IN A BOILING WATER REACTOR

#80
20130077730
2013-03-28

Nuclear Power Plant

#81
20130051511
2013-02-28

Pressurized water reactor with compact passive safety systems

#82
20120294407
2012-11-22

Nuclear Power Plant, Fuel Pool Water Cooling Facility and Method Thereof

#83
20120281802
2012-11-08

EMERGENCY SYSTEM

#84
20120177164
2012-07-12

Reactor pressure vessel head vents and methods of using the same

#85
20120155597
2012-06-21

Nuclear reactor automatic depressurization system

#86
20120121056
2012-05-17

Reactor containment vessel and nuclear power plant using the same

#87
20120057668
2012-03-08

REACTOR CONTAINMENT STRUCTURE

#88
20120051488
2012-03-01

Method for the pressure relief of a nuclear power plant, pressure-relief system for a nuclear power plant and associated nuclear power plant

#89
20120051486
2012-03-01

REACTOR CONTAINMENT STRUCTURE

#90
20110314858
2011-12-29

REACTOR CONTAINMENT VESSEL COOLING SYSTEM, REACTOR CONTAINMENT VESSEL, AND REACTOR CONTAINMENT VESSEL COOLING METHOD

#91
20110249784
2011-10-13

DRIVING SYSTEM OF RELIEF SAFETY VALVE

#92
20110158371
2011-06-30

Pressurized water reactor plant

#93
20100272226
2010-10-28

Boiling water nuclear reactor and emergency core cooling system of the same

#94
20100232560
2010-09-16

PH adjusting system and PH adjusting method

#95
20100226830
2010-09-09

pH adjusting apparatus

#96
20100183111
2010-07-22

Ex-vessel accident mitigation

#97
20090323884
2009-12-31

Containment vessel and nuclear power plant therewith

#98
20090060112
2009-03-05

BOILING WATER NUCLEAR REACTOR AND EMERGENCY CORE COOLING SYSTEM OF THE SAME

#99
20090020179
2009-01-22

Leakproof draft system pressure/vacuum relief device for power plants

#100
20080037696
2008-02-14

Reactor containment vessel

#101
20070092053
2007-04-26

Reactor containment vessel and boiling water reactor power plant

#102
20070076835
2007-04-05

Reactor containment vessel cooling equipment

#103
20060251202
2006-11-09

Nuclear facility and method for operating a nuclear facility

#104
20060188055
2006-08-24

Nuclear plant and method for the pressure relief in a nuclear plant

#105
20050265511
2005-12-01

Pressure suppression and decontamination apparatus and method for reactor container