Topic leaderboard
Preheating feed-water & feed-water supply
Ranked by the PatentIndex Score — a 1–99 percentile within F22D · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F22D patents became public in the last 2 years — the current frontier
- 199Raub Warfield Smith3 patents · 16 citations
- 296Armen Eduardo Kodjaian2 patents · 1 citations
- 392Björn Hardarson2 patents · 1 citations
- 488Emeric Sarron2 patents · 1 citations
- 583Ólafur Hrafn Björnsson2 patents · 1 citations
- 679Song Hun Cha5 patents · 0 citations
- 775Alfred T. Volberding2 patents · 0 citations
- 871William A. Fuglevand2 patents · 0 citations
- 967Michelle Smith Allebach1 patents · 1 citations
- 1063Brian Smith1 patents · 1 citations
- 1158Randall M. Smith1 patents · 1 citations
- 1254Abdul Aziz Afzal2 patents · 0 citations
- 1350Ahad Khalid Alghamdi2 patents · 0 citations
- 1446Kazuhiko Sato2 patents · 0 citations
- 1542Leen Hassan Al Badah2 patents · 0 citations
- 1638Lina Ashraf Altahini2 patents · 0 citations
- 1733Muhammad Asad2 patents · 0 citations
- 1829Muhammad Azhar Ali Khan2 patents · 0 citations
- 1925Razan Salem Abuzaid2 patents · 0 citations
- 2021Shams Ameen Almomen2 patents · 0 citations
- 2117CONLON WILLIAM M1 patents · 0 citations
- 2213Anand Kumar1 patents · 0 citations
- 238Bryan F. Craig1 patents · 0 citations
- 244Chae Gwan Park1 patents · 0 citations
- 251Do Hoon Kim1 patents · 0 citations
Active· last 5 yrs
Sustained F22D output across the last 5 years
- 199Raub Warfield Smith3 patents · 16 citations
- 296Andy Nowak3 patents · 5 citations
- 392Frank Thomas7 patents · 5 citations
- 488Jan Brückner9 patents · 5 citations
- 583Martin Effert6 patents · 4 citations
- 679Czeslaw Golkowski2 patents · 5 citations
- 775Daotong Chong5 patents · 4 citations
- 871Junjie Yan5 patents · 4 citations
- 967Ming Liu5 patents · 4 citations
- 1063Glenn D. Mattison3 patents · 2 citations
- 1158Kevin J. O'Boyle3 patents · 2 citations
- 1254Kamal Prithiviraj Fernando2 patents · 4 citations
- 1350Akihiro Hamasaki4 patents · 2 citations
- 1446Hui Yan3 patents · 4 citations
- 1542Yuji Ohta2 patents · 5 citations
- 1638Jinshi Wang2 patents · 4 citations
- 1733Weixiong Chen2 patents · 4 citations
- 1829Matthew P. Goertz2 patents · 2 citations
- 1925Nelson Joseph Geoffroy1 patents · 5 citations
- 2021Sylvester Lopez1 patents · 5 citations
- 2117Ted Lee Mcintyre, Ii1 patents · 5 citations
- 2213Jun Taguchi3 patents · 2 citations
- 238Armen Eduardo Kodjaian2 patents · 1 citations
- 244Björn Hardarson2 patents · 1 citations
- 251Emeric Sarron2 patents · 1 citations
All-time canon
Career PatentIndex Score in F22D
- 199Ari Nir4 patents · 66 citations
- 296Erhard Liebig4 patents · 55 citations
- 392Barry Johnston4 patents · 68 citations
- 488Herbert Tratz4 patents · 53 citations
- 583Armand Francart, Jr.3 patents · 101 citations
- 679G. Scott Vogel3 patents · 77 citations
- 775John S. Haefner3 patents · 77 citations
- 871Toyohiko Masuda4 patents · 34 citations
- 967Charles F. Noll, Jr.6 patents · 22 citations
- 1063Randall James Davis6 patents · 22 citations
- 1158Hideaki Yumoto3 patents · 47 citations
- 1254Pierre E. Regamey3 patents · 42 citations
- 1350Brendan Kemp3 patents · 57 citations
- 1446Paul James Nichols3 patents · 57 citations
- 1542Martin Bekedam3 patents · 44 citations
- 1638Li Hua3 patents · 45 citations
- 1733Melvin J. Albrecht4 patents · 32 citations
- 1829Tsuyoshi Oishi4 patents · 21 citations
- 1925Yoji Nagai3 patents · 27 citations
- 2021Chikayuki Nagata3 patents · 21 citations
- 2117Satoshi Nakamura3 patents · 21 citations
- 2213Shinji Nakamura3 patents · 21 citations
- 238Tsuyoshi Dohi3 patents · 21 citations
- 244Yasuhiro Takeuchi3 patents · 21 citations
- 251Yoshio Nakayama3 patents · 21 citations
Rising· last 2 yrs
The top-scoring F22D patents made public in the last 2 years
- 199US11944922B1✦ AIWater treatment system1 cites · 202467% earned
- 293US12405000B2✦ AIBuilding emission processing and/or sequestration systems and methods0 cites · 20240% earned
- 387US12442317B2✦ AIHeat integration0 cites · 20240% earned
- 480US12584424B2Start-up and control of liquid salt energy storage combined cycle systems0 cites · 20250% earned
- 573US12031457B2Combined cycle power plant having reduced parasitic pumping losses0 cites · 20240% earned
- 667US12221923B2Gas turbine cogeneration system and method of operating the same0 cites · 20240% earned
- 760US12480428B1Solar steam electricity system0 cites · 20250% earned
- 853US12595761B2Generating electrical energy from hydrogen and oxygen0 cites · 20240% earned
- 947US12451762B1Solar electrical grid with distributed solar generation0 cites · 20250% earned
- 1040US12258885B2Combined power generation system and operation control method thereof0 cites · 20240% earned
- 1133US12203650B2Waste heat recovery system and method0 cites · 20240% earned
- 1227US12552996B2Method and system for steamcracking0 cites · 20240% earned
- 1320US12562579B2Power generation system employing power amplifying thermo-mechanical inverter technology0 cites · 20240% earned
- 1413US12372231B2Device and method for producing high-pressure or super high-pressure steam as byproduct fr0 cites · 20240% earned
- 157US11892160B1System to achieve full combustion turbine load in HRSG limited combined cycle plants0 cites · 20240% earned
- 161US12486981B2Conduit preheating control0 cites · 20240% earned
Active· last 5 yrs
The top-scoring F22D patents of the last 5 years
- 199US11721980B2✦ AIPower generation system employing power amplifying thermo-mechanical inverter technology3 cites · 202372% earned
- 296US10955130B1✦ AIExhaust powered liquid evaporator apparatus and method5 cites · 202184% earned
- 392US12129773B2✦ AIStart-up and control of liquid salt energy storage combined cycle systems2 cites · 202367% earned
- 488US10968784B2Flexible coal-fired power generation system and operation method thereof4 cites · 202182% earned
- 583US11761624B2Chemical dispensing system for treating fluid in boiler/cooling systems2 cites · 202158% earned
- 679US12098657B2Heat integration1 cites · 202350% earned
- 775US11834968B2Steam generation apparatus and exhaust gas heat recovery plant2 cites · 202376% earned
- 871US11944922B1Water treatment system1 cites · 202467% earned
- 967US11022005B2Steam turbine power plant utilizing industrial heat pumps to preheat boiler feed-water2 cites · 202176% earned
- 1063US11649178B2Systems and methods for removing organic compounds from water used to generate steam1 cites · 202156% earned
- 1158US11236640B2Steam power plant, modification method and operation method of steam power plant1 cites · 202167% earned
- 1254US12025305B2Solute concentration decision method and water quality management method for steam turbine1 cites · 202267% earned
- 1350USRE49474EFree radical sterilization system and method1 cites · 202356% earned
- 1446US11713877B2Systems and methods for removing organic compounds from steam1 cites · 202167% earned
- 1542US11473451B2Method for improving efficiency of Rankine cycle1 cites · 202167% earned
- 1638US11492270B2Apparatus, systems and methods for management of raw water and emissions utilizing heat an0 cites · 20210% earned
- 1733US12398880B2Systems and methods for isolating substantially pure carbon dioxide from flue gas0 cites · 20230% earned
- 1829US11940178B2Condensing, ultra-low NOx gas-fired humidifier0 cites · 20220% earned
- 1925US12072096B2Method and system for improving boiler effectiveness0 cites · 20210% earned
- 2021US11635202B2Dirty water and exhaust constituent free, direct steam generation, convaporator system, ap0 cites · 20210% earned
- 2117US12312697B2Electrolyzer system with steam generation and method of operating same0 cites · 20220% earned
- 2213US12279712B2Steam cooking apparatus and method0 cites · 20220% earned
- 238US12130011B2Steam boiler system and method of circulating water and steam in a steam boiler system0 cites · 20230% earned
- 244US11391457B2Segregated steam system and process in a hydrogen production facility0 cites · 20210% earned
- 251US12031457B2Combined cycle power plant having reduced parasitic pumping losses0 cites · 20240% earned
All-time canon
The defining F22D patents of the whole record
- 199US5215448A✦ AICombined boiler feed and condensate pump138 cites · 199393% earned
- 296US4476930A✦ AIInhibition of scale deposition from steam generation fluids114 cites · 198493% earned
- 392US4660511A✦ AIFlue gas heat recovery system85 cites · 198793% earned
- 488US9874112B2Heat engine system having a selectively configurable working fluid circuit81 cites · 201589% earned
- 583US5152252AWater treatment control system for a boiler81 cites · 199293% earned
- 679US7174715B2Hot to cold steam transformer for turbine systems76 cites · 200693% earned
- 775US7591309B2Method for production of high pressure steam from produced water73 cites · 200893% earned
- 871US5141405ALeak proof, preloaded, high-biasing force float-operated over-center valve actuating mecha69 cites · 199289% earned
- 967US5353653AHeat exchanger abnormality monitoring system64 cites · 199492% earned
- 1063US5041386AConcentration cycles, percent life holding time and continuous treatment concentration mon62 cites · 199192% earned
- 1158US5199263ACombustion system with reduced sulfur oxide emissions59 cites · 199392% earned
- 1254US4841722ADual fuel, pressure combined cycle58 cites · 198992% earned
- 1350US5347958AHeat recovery apparatus and an improved heat recovery method54 cites · 199492% earned
- 1446US5293842AMethod for operating a system for steam generation, and steam generator system53 cites · 199492% earned
- 1542US4489679AControl system for economic operation of a steam generator52 cites · 198492% earned
- 1638US4687626APassive safety device for emergency steam dump and heat removal for steam generators in nu47 cites · 198792% earned
- 1733US7100540B2Portable steam and heat generator46 cites · 200588% earned
- 1829US4437968ABoiler apparatus46 cites · 198492% earned
- 1925US4619224AApparatus for controlling drum water level of drum type boiler46 cites · 198692% earned
- 2021US5747342AMethods and apparatus for monitoring and controlling PH phosphate and sodium to phosphate 46 cites · 199892% earned
- 2117US4242989ABoiler level control system46 cites · 198192% earned
- 2213US5050540AMethod of gas blanketing a boiler45 cites · 199192% earned
- 238US8091361B1Method and apparatus for controlling the final feedwater temperature of a regenerative Ran44 cites · 201292% earned
- 244US4031862AEconomizer43 cites · 197792% earned
- 251US5896435APressurized water supply device for a steam injector water source42 cites · 199992% earned
Rising· last 2 yrs
Assignees whose newest F22D patents became public in the last 2 years — the current frontier
- 199GEN ELECTRIC27 patents · 251 citations
- 292MITSUBISHI HEAVY IND LTD6 patents · 18 citations
- 385Kalindha Rashmi LLC3 patents · 4 citations
- 477PINTAIL POWER LLC2 patents · 2 citations
- 569HRST INC2 patents · 3 citations
- 662Cri Hf2 patents · 1 citations
- 754CARBONQUEST INC2 patents · 0 citations
- 846SIEMENS ENERGY GLOBAL GMBH & CO KG4 patents · 0 citations
- 938SMITH RANDALL1 patents · 1 citations
- 1031DOOSAN ENERBILITY CO LTD3 patents · 0 citations
- 1123UNIV PRINCE MOHAMMAD BIN FAHD2 patents · 0 citations
- 1215CHANGZHOU RUIHUA CHEMICAL ENGINEERING & TECH CO LTD1 patents · 0 citations
- 138LINDE GMBH1 patents · 0 citations
- 141SAMSUNG E&A CO LTD1 patents · 0 citations
Active· last 5 yrs
Sustained F22D output across the last 5 years
- 199GEN ELECTRIC27 patents · 251 citations
- 296MITSUBISHI HEAVY IND LTD6 patents · 18 citations
- 392Kalindha Rashmi LLC3 patents · 4 citations
- 488STERIFRE MEDICAL INC2 patents · 5 citations
- 583UNIV XI AN JIAOTONG5 patents · 4 citations
- 679ARVOS LJUNGSTROM LLC3 patents · 2 citations
- 775DONALDSON CO INC3 patents · 2 citations
- 871GENERAL ELECTRIC TECHNOLOGY GMBH7 patents · 2 citations
- 967DOOSAN HEAVY IND & CONSTRUCTION CO LTD6 patents · 1 citations
- 1063MITSUBISHI POWER LTD5 patents · 1 citations
- 1158PINTAIL POWER LLC2 patents · 2 citations
- 1254MARINE TURBINE TECH LLC1 patents · 5 citations
- 1350HRST INC2 patents · 3 citations
- 1446Cri Hf2 patents · 1 citations
- 1542CONDOR TECHNOLOGIES—A DIV OF AZURE WATER SYSTEMS LLC1 patents · 2 citations
- 1638LEVIN JOEL MELVIN1 patents · 2 citations
- 1733KONINKLIJKE PHILIPS NV3 patents · 0 citations
- 1829CARBONQUEST INC2 patents · 0 citations
- 1925DRI STEEM CORP2 patents · 0 citations
- 2021SIEMENS ENERGY GLOBAL GMBH & CO KG4 patents · 0 citations
- 2117BEIJING CYNERTEC CO LTD1 patents · 1 citations
- 2213SMITH RANDALL1 patents · 1 citations
- 238DOOSAN ENERBILITY CO LTD3 patents · 0 citations
- 244CLEANTEK IND INC1 patents · 0 citations
- 251CONDOR TECH INC1 patents · 0 citations
All-time canon
All-time PatentIndex Score in F22D
- 199COMBUSTION ENG11 patents · 234 citations
- 296GEN ELECTRIC27 patents · 251 citations
- 392HITACHI LTD17 patents · 289 citations
- 488TOSHIBA KK9 patents · 159 citations
- 583BABCOCK & WILCOX CO8 patents · 126 citations
- 679WESTINGHOUSE ELECTRIC CORP8 patents · 132 citations
- 775KRAFTWERK UNION AG9 patents · 107 citations
- 871BBC BROWN BOVERI & CIE10 patents · 108 citations
- 967SIEMENS AG13 patents · 89 citations
- 1063TLV CO LTD7 patents · 50 citations
- 1158ASEA BROWN BOVERI4 patents · 56 citations
- 1254SKAVIS CORP6 patents · 22 citations
- 1350CLAYTON MANUFACTURING CO3 patents · 61 citations
- 1446ALSTOM TECHNOLOGY LTD11 patents · 18 citations
- 1542REGAMEY PIERRE E3 patents · 42 citations
- 1638AUTOFLAME ENG LTD3 patents · 57 citations
- 1733BEKEDAM MARTIN3 patents · 44 citations
- 1829JOHNSTON BARRY W3 patents · 51 citations
- 1925BABCOCK & WILCOX POWER GENERAT5 patents · 21 citations
- 2021EMERSON ELECTRIC CO2 patents · 72 citations
- 2117FRANCART JR ARMAND2 patents · 79 citations
- 2213TEXAS UTILITIES ELECTRIC COMPA2 patents · 63 citations
- 238SHIN EI KK2 patents · 61 citations
- 244PHILLIPS PETROLEUM CO2 patents · 59 citations
- 251CRANE CO2 patents · 55 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth