Topic leaderboard
Separation & filtration
Ranked by the PatentIndex Score — a 1–99 percentile within B01D · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest B01D patents became public in the last 2 years — the current frontier
- 199Steven Scott Gieseke103 patents · 9,668 citations
- 296David S. Soane28 patents · 3,977 citations
- 392Wayne R. W. Bishop73 patents · 6,046 citations
- 488Brad E. Kahlbaugh31 patents · 3,147 citations
- 583Wayne Ernest Conrad142 patents · 6,156 citations
- 679David W. Nelson25 patents · 1,283 citations
- 775Benny K. Nelson83 patents · 3,283 citations
- 871Joseph A. Patchett47 patents · 1,926 citations
- 967Gregory Reichter45 patents · 2,690 citations
- 1063Kevin Schrage48 patents · 2,461 citations
- 1158Bruce Allen Boehrs27 patents · 1,877 citations
- 1254Dave Petersen24 patents · 1,796 citations
- 1350Bruce Crenshaw36 patents · 2,417 citations
- 1446Bradley Kuempel36 patents · 1,935 citations
- 1542Thomas Lundgren40 patents · 1,829 citations
- 1638David J. Edlund57 patents · 3,917 citations
- 1733Steven A. Carter13 patents · 1,479 citations
- 1829Thomas Miller41 patents · 1,828 citations
- 1925Donald Mork38 patents · 1,689 citations
- 2021Rustem F. Ismagilov15 patents · 925 citations
- 2117Z. Gerald Liu29 patents · 2,280 citations
- 2213Vladimir Kladnitsky27 patents · 1,425 citations
- 238Richard Osendorf56 patents · 2,712 citations
- 244William A. Pledger28 patents · 2,028 citations
- 251Brent R. Constantz47 patents · 1,906 citations
Active· last 5 yrs
Sustained B01D output across the last 5 years
- 199Rodney S. Kenley20 patents · 2,934 citations
- 296Steven Scott Gieseke103 patents · 9,668 citations
- 392Thomas M. Weik37 patents · 3,642 citations
- 488David S. Soane28 patents · 3,977 citations
- 583Wayne R. W. Bishop73 patents · 6,046 citations
- 679Jim C. Rothman29 patents · 3,836 citations
- 775Daniel T. Risch29 patents · 4,586 citations
- 871Brad E. Kahlbaugh31 patents · 3,147 citations
- 967Fred H. Wahlquist31 patents · 3,503 citations
- 1063Wayne Ernest Conrad142 patents · 6,156 citations
- 1158Donald F. Engel30 patents · 2,671 citations
- 1254Steven Kristian Pedersen51 patents · 3,223 citations
- 1350David W. Nelson25 patents · 1,283 citations
- 1446Richard I. Brown53 patents · 4,912 citations
- 1542Benny K. Nelson83 patents · 3,283 citations
- 1638Joseph A. Patchett47 patents · 1,926 citations
- 1733Gregory Reichter45 patents · 2,690 citations
- 1829Paul Coulonvaux39 patents · 2,171 citations
- 1925Kevin Schrage48 patents · 2,461 citations
- 2021Bruce Allen Boehrs27 patents · 1,877 citations
- 2117Dave Petersen24 patents · 1,796 citations
- 2213Pierre Cote69 patents · 4,598 citations
- 238Joseph C. Dettling76 patents · 4,423 citations
- 244Bruce Crenshaw36 patents · 2,417 citations
- 251Bradley Kuempel36 patents · 1,935 citations
All-time canon
Career PatentIndex Score in B01D
- 199Larry J. Kricka11 patents · 6,098 citations
- 296Peter Wilding11 patents · 6,098 citations
- 392Thomas M. Feldsein10 patents · 2,250 citations
- 488Dennis M. Treu23 patents · 3,323 citations
- 583Rodney S. Kenley20 patents · 2,934 citations
- 679Frederick H. Peter, Jr.9 patents · 1,939 citations
- 775Steven Scott Gieseke103 patents · 9,668 citations
- 871Carolyn J. Finnerty39 patents · 4,496 citations
- 967Mark A. Gogins39 patents · 4,521 citations
- 1063Thomas M. Weik37 patents · 3,642 citations
- 1158David S. Soane28 patents · 3,977 citations
- 1254Zoya M. Soane10 patents · 3,470 citations
- 1350Robert W. Gore5 patents · 5,107 citations
- 1446Wayne R. W. Bishop73 patents · 6,046 citations
- 1542Bo Zheng12 patents · 1,183 citations
- 1638Cory John Gerdts12 patents · 1,183 citations
- 1733Joshua David Tice12 patents · 1,183 citations
- 1829David W. Baarman10 patents · 2,095 citations
- 1925Gary R. Gillingham54 patents · 6,945 citations
- 2021Stephen R. Ash13 patents · 4,338 citations
- 2117Kenneth E. Pawlak9 patents · 1,606 citations
- 2213Dawn Matthews7 patents · 1,078 citations
- 238Douglas G. Crofoot23 patents · 2,170 citations
- 244Hoo Y. Chung29 patents · 1,971 citations
- 251John R. B. Hall18 patents · 1,788 citations
Rising· last 2 yrs
The top-scoring B01D patents made public in the last 2 years
- 199US12084973B1✦ AIBlockage-proof water diversion and drainage devices for highway tunnel construction11 cites · 202488% earned
- 296US12246266B2✦ AIDisposable for a spray drying system16 cites · 202478% earned
- 392US11998861B2✦ AIUsability of a disposable for a spray drying plasma system21 cites · 202485% earned
- 488US12139681B1System and method for producing renewable natural gas from biogas10 cites · 202481% earned
- 583US11975274B2Blood plasma product19 cites · 202479% earned
- 679US12139682B1System and method for producing renewable natural gas from biogas8 cites · 202480% earned
- 775US11980846B1System and method for producing renewable natural gas from biogas12 cites · 202488% earned
- 871US12215555B2Systems and methods for operating candle filters to recover glycols from drilling operatio10 cites · 202487% earned
- 967US12275661B2Methods and systems of iodine capture from aqueous solutions6 cites · 202568% earned
- 1063US12083476B2Heterogeneous desulfurization catalyst6 cites · 202468% earned
- 1158USD1043975SFluid transfer adapter6 cites · 202478% earned
- 1254US12091330B2Apparatus and process for removing PFAS and PFAS compounds from water6 cites · 202478% earned
- 1350US11965305B1Electronic well lid based on electric control travel switch control6 cites · 202485% earned
- 1446US12332156B2Soil sample didestion device2 cites · 202576% earned
- 1542US11867357B1Deaeration conduit7 cites · 202486% earned
- 1638US11998865B1Filter cleaning system5 cites · 202469% earned
- 1733US11986769B1Carbon mineralization using hyaloclastite, volcanic ash and pumice mineral and an alkaline5 cites · 202477% earned
- 1829US12239924B2Collar having modular parts for supporting stratified filtration5 cites · 202484% earned
- 1925US12329691B2Relocation module and methods for surgical equipment3 cites · 202455% earned
- 2021US12050022B2Liquid desiccant air conditioning system and control methods3 cites · 202472% earned
- 2117US12090429B1Filter device, faucet water purifier and spraying process thereof3 cites · 202480% earned
- 2213US11952274B1Process for producing hydrogen product having reduced carbon intensity4 cites · 202470% earned
- 238US12005390B1Hybrid carbon dioxide removal systems4 cites · 202475% earned
- 244US12066252B1Gas collection system4 cites · 202482% earned
- 251US11946007B1Natural gas separation and purification and mercury collection system for oil and gas well4 cites · 202482% earned
Active· last 5 yrs
The top-scoring B01D patents of the last 5 years
- 199US11002189B2✦ AIMobile gas turbine inlet air conditioning system and associated methods130 cites · 202181% earned
- 296US11560845B2✦ AIMobile gas turbine inlet air conditioning system and associated methods71 cites · 202193% earned
- 392US11160710B1✦ AIRelocation module and methods for surgical equipment49 cites · 202178% earned
- 488US10993865B2Relocation module and methods for surgical equipment54 cites · 202185% earned
- 583US11193504B1Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear48 cites · 202185% earned
- 679US11207292B2Cannabidiol preparations and its uses47 cites · 202183% earned
- 775US11219570B2Relocation module and methods for surgical equipment36 cites · 202179% earned
- 871US11766636B1Modular open systems architecture direct air capture platform21 cites · 202385% earned
- 967US11033495B1Manufacturing of bupivacaine multivesicular liposomes34 cites · 202174% earned
- 1063US11291602B2Relocation module and methods for surgical equipment34 cites · 202176% earned
- 1158US11426318B2Medical module including automated dose-response record system32 cites · 202178% earned
- 1254US11603776B2Energy storage system and applications31 cites · 202266% earned
- 1350US11045377B2Relocation modules and methods for surgical field36 cites · 202175% earned
- 1446US11266943B1System and method for improving the performance and lowering the cost of atmospheric carbo29 cites · 202291% earned
- 1542US11345455B2Apparatus for emissions reduction as a service (ERaaS)28 cites · 202283% earned
- 1638US12084973B1Blockage-proof water diversion and drainage devices for highway tunnel construction11 cites · 202488% earned
- 1733US12246266B2Disposable for a spray drying system16 cites · 202478% earned
- 1829US11703417B1Hydrogen overflow and exhaust gas hydrogen treatment unit of a test system of a hydrogen i16 cites · 202389% earned
- 1925US11998861B2Usability of a disposable for a spray drying plasma system21 cites · 202485% earned
- 2021US11446196B2Relocation module and methods for surgical equipment21 cites · 202290% earned
- 2117US11432982B2Relocation module and methods for surgical equipment26 cites · 202273% earned
- 2213US11274293B2Method for producing and purifying RNA, comprising at least one step of tangential flow fi30 cites · 202176% earned
- 238US12139681B1System and method for producing renewable natural gas from biogas10 cites · 202481% earned
- 244US11634647B2Tower bottoms coke catching device24 cites · 202280% earned
- 251US11975274B2Blood plasma product19 cites · 202479% earned
All-time canon
The defining B01D patents of the whole record
- 199US4816397A✦ AIMultichain polypeptides or proteins and processes for their production3,126 cites · 198996% earned
- 296US3953566A✦ AIProcess for producing porous products2,444 cites · 197693% earned
- 392US4187390A✦ AIPorous products and process therefor1,618 cites · 198093% earned
- 488US5498392AMesoscale polynucleotide amplification device and method1,527 cites · 199693% earned
- 583US5587128AMesoscale polynucleotide amplification devices1,414 cites · 199691% earned
- 679US4525374ATreating hydrophobic filters to render them hydrophilic1,305 cites · 198595% earned
- 775US6887710B2Robust system for screening mail for biological agents1,120 cites · 200295% earned
- 871US5582907AMelt-blown fibrous web1,094 cites · 199689% earned
- 967US7226978B2Techniques to improve polyurethane membranes for implantable glucose sensors1,083 cites · 200386% earned
- 1063US5190657ABlood filter and method of filtration979 cites · 199395% earned
- 1158US5726026AMesoscale sample preparation device and systems for determination and processing of analyt977 cites · 199891% earned
- 1254USH2086HFine particle liquid filtration media953 cites · 200395% earned
- 1350US5376252AMicrofluidic structure and process for its manufacture948 cites · 199495% earned
- 1446US5126022AMethod and device for moving molecules by the application of a plurality of electrical fie941 cites · 199295% earned
- 1542US4452773AMagnetic iron-dextran microspheres915 cites · 198495% earned
- 1638US4777953ACapillary filtration and collection method for long-term monitoring of blood constituents886 cites · 198895% earned
- 1733US4036749APurification of saline water872 cites · 197795% earned
- 1829US4854322ACapillary filtration and collection device for long-term monitoring of blood constituents840 cites · 198995% earned
- 1925US5002054AInterstitial filtration and collection device and method for long-term monitoring of physi836 cites · 199195% earned
- 2021US5284140AAcrylic copolymer membranes for biosensors829 cites · 199492% earned
- 2117US5820646AInline filter apparatus798 cites · 199895% earned
- 2213US5055171AIonic semiconductor materials and applications thereof786 cites · 199195% earned
- 238US6262191B1Diluent slip stream to give catalyst wetting agent731 cites · 200195% earned
- 244US5750015AMethod and device for moving molecules by the application of a plurality of electrical fie729 cites · 199888% earned
- 251US5589563ASurface-modifying endgroups for biomedical polymers692 cites · 199695% earned
Rising· last 2 yrs
Assignees whose newest B01D patents became public in the last 2 years — the current frontier
- 199DONALDSON CO INC962 patents · 47,737 citations
- 296GORE & ASS155 patents · 12,587 citations
- 392PALL CORP547 patents · 25,447 citations
- 488APPLIED MATERIALS INC95 patents · 4,190 citations
- 583BAXTER INT229 patents · 12,246 citations
- 679UNIV CALIFORNIA269 patents · 8,653 citations
- 775BALDWIN FILTERS INC75 patents · 4,680 citations
- 871UNIV WASHINGTON25 patents · 1,694 citations
- 967TOYOTA MOTOR CO LTD528 patents · 12,721 citations
- 1063IBIDEN CO LTD158 patents · 3,118 citations
- 1158CORNING INC308 patents · 6,826 citations
- 1254MASSACHUSETTS INST TECHNOLOGY172 patents · 3,369 citations
- 1350PARKER HANNIFIN CORP155 patents · 5,744 citations
- 1446AIR PROD & CHEM554 patents · 20,902 citations
- 1542BATTELLE MEMORIAL INSTITUTE146 patents · 4,866 citations
- 1638PROCTER & GAMBLE111 patents · 2,960 citations
- 1733US ENERGY216 patents · 6,055 citations
- 1829AIR LIQUIDE501 patents · 8,673 citations
- 1925CARRIER CORP91 patents · 2,236 citations
- 2021CALIFORNIA INST OF TECHN85 patents · 2,030 citations
- 2117STRYKER CORP11 patents · 869 citations
- 2213JOHNSON MATTHEY PLC409 patents · 4,390 citations
- 238CHEVRON USA INC151 patents · 2,367 citations
- 244NGK INSULATORS LTD784 patents · 8,174 citations
- 251KUBOTA KK51 patents · 1,154 citations
Active· last 5 yrs
Sustained B01D output across the last 5 years
- 199UNIV PENNSYLVANIA34 patents · 6,250 citations
- 296DONALDSON CO INC962 patents · 47,737 citations
- 392GORE & ASS155 patents · 12,587 citations
- 488ACCESS BUSINESS GROUP INT LLC41 patents · 2,384 citations
- 583PALL CORP547 patents · 25,447 citations
- 679APPLIED MATERIALS INC95 patents · 4,190 citations
- 775BAXTER INT229 patents · 12,246 citations
- 8713M INNOVATIVE PROPERTIES CO408 patents · 12,071 citations
- 967UNIV CALIFORNIA269 patents · 8,653 citations
- 1063BALDWIN FILTERS INC75 patents · 4,680 citations
- 1158UNITED TECHNOLOGIES CORP125 patents · 4,430 citations
- 1254UNIV WASHINGTON25 patents · 1,694 citations
- 1350TOYOTA MOTOR CO LTD528 patents · 12,721 citations
- 1446KIMBERLY CLARK CO71 patents · 4,853 citations
- 1542SHELL OIL CO464 patents · 8,697 citations
- 1638IBIDEN CO LTD158 patents · 3,118 citations
- 1733INVACARE CORP28 patents · 1,534 citations
- 1829EASTMAN CHEM CO113 patents · 1,744 citations
- 1925CORNING INC308 patents · 6,826 citations
- 2021MASSACHUSETTS INST TECHNOLOGY172 patents · 3,369 citations
- 2117SIEMENS AG142 patents · 4,672 citations
- 2213LYNNTECH INC30 patents · 2,570 citations
- 238EBARA CORP146 patents · 3,427 citations
- 244PARKER HANNIFIN CORP155 patents · 5,744 citations
- 251AIR PROD & CHEM554 patents · 20,902 citations
All-time canon
All-time PatentIndex Score in B01D
- 199UNIV PENNSYLVANIA34 patents · 6,250 citations
- 296AKSYS LTD26 patents · 4,078 citations
- 392DONALDSON CO INC962 patents · 47,737 citations
- 488GORE & ASS155 patents · 12,587 citations
- 583ACCESS BUSINESS GROUP INT LLC41 patents · 2,384 citations
- 679MINNESOTA MINING & MFG179 patents · 17,382 citations
- 775ADVANCED TECH MATERIALS89 patents · 6,759 citations
- 871PALL CORP547 patents · 25,447 citations
- 967ZENON ENVIRONMENTAL INC77 patents · 9,177 citations
- 1063APPLIED MATERIALS INC95 patents · 4,190 citations
- 1158SYMYX TECHNOLOGIES INC31 patents · 3,572 citations
- 1254BAXTER INT229 patents · 12,246 citations
- 1350DOW CHEMICAL CO392 patents · 15,623 citations
- 1446GBD CORP28 patents · 3,201 citations
- 15423M INNOVATIVE PROPERTIES CO408 patents · 12,071 citations
- 1638INHALE THERAPEUTIC SYST9 patents · 1,372 citations
- 1733SEQUAL TECHNOLOGIES INC14 patents · 2,804 citations
- 1829ENGELHARD CORP199 patents · 14,247 citations
- 1925ACLARA BIOSCIENCES INC7 patents · 2,008 citations
- 2021UNIV CALIFORNIA269 patents · 8,653 citations
- 2117ROYAL APPLIANCE MFG28 patents · 2,136 citations
- 2213MCLAUGHLIN WILLIAM F6 patents · 1,266 citations
- 238CIPHERGEN BIOSYSTEMS INC12 patents · 1,177 citations
- 244SHARPER IMAGE CORP16 patents · 1,110 citations
- 251FANTOM TECH INC15 patents · 1,814 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth