Inventor · disambiguated record
Keh B. Dema
Also filed as: DEMA KEH · DEMA KEH B · DEMA KEH BUMA
31 granted patents·7 pending applications·1,264 citations·filing 1992–2025
98Inventor score
Files withDONALDSON CO INC19ROGERS ROBERT M5KNOWLTON TECH LLC4EASTMAN CHEM CO3ASCEND PERFORMANCE MAT OPERATIONS LLC1
Top patents by PatentIndex Score
38 records- 0198US8641796B2Filter medium and breather filter structureROGERS ROBERT M·Filed 2012·Granted Feb 4, 2014·40 cites·13 claims
- 0298US8512435B2Filter medium and breather filter structureROGERS ROBERT M·Filed 2012·Granted Aug 20, 2013·32 cites·30 claims
- 0398US8277529B2Filter medium and breather filter structureROGERS ROBERT M·Filed 2011·Granted Oct 2, 2012·44 cites·19 claims
- 0498US8268033B2Filter medium and structureROGERS ROBERT M·Filed 2011·Granted Sep 18, 2012·70 cites·23 claims
- 0598US7314497B2Filter medium and structureDONALDSON CO INC·Filed 2005·Granted Jan 1, 2008·272 cites·82 claims
- 0698US7309372B2Filter medium and structureDONALDSON CO INC·Filed 2006·Granted Dec 18, 2007·174 cites·18 claims
- 0797US11504663B2Filter medium and breather filter structureDONALDSON CO INC·Filed 2020·Granted Nov 22, 2022·4 cites·20 claims
- 0897US8057567B2Filter medium and breather filter structureWEBB DAVID M·Filed 2006·Granted Nov 15, 2011·105 cites·13 claims
- 0997US7985344B2High strength, high capacity filter media and structureDONALDSON CO INC·Filed 2007·Granted Jul 26, 2011·61 cites·7 claims
- 1096US10610813B2Filter medium and breather filter structureDONALDSON CO INC·Filed 2017·Granted Apr 7, 2020·7 cites·10 claims
- 1195US9617685B2Process for making paper and nonwoven articles comprising synthetic microfiber bindersEASTMAN CHEM CO·Filed 2014·Granted Apr 11, 2017·37 cites·17 claims
- 1295US9303357B2Paper and nonwoven articles comprising synthetic microfiber bindersEASTMAN CHEM CO·Filed 2014·Granted Apr 5, 2016·43 cites·15 claims
- 1395US8460424B2Aerosol separator; and methodROGERS ROBERT M·Filed 2012·Granted Jun 11, 2013·24 cites·14 claims
- 1495US8177875B2Aerosol separator; and methodROGERS ROBERT·Filed 2006·Granted May 15, 2012·45 cites·14 claims
- 1595US8021457B2Filter media and structureDONALDSON CO INC·Filed 2004·Granted Sep 20, 2011·77 cites·33 claims
- 1694US11821119B2High temperature treated mediaDONALDSON CO INC·Filed 2021·Granted Nov 21, 2023·2 cites·15 claims
- 1794USRE49097EFilter medium and structureDONALDSON CO INC·Filed 2019·Granted Jun 7, 2022·4 cites·82 claims
- 1894US10981096B2Process for making high efficiency synthetic filter mediaKNOWLTON TECH LLC·Filed 2018·Granted Apr 20, 2021·29 cites·10 claims
- 1994US9795906B2Filter medium and breather filter structureDONALDSON CO INC·Filed 2013·Granted Oct 24, 2017·13 cites·6 claims
- 2094US9056268B2Liquid filtration media, filter elements and methodsJONES DEREK O·Filed 2011·Granted Jun 16, 2015·39 cites·13 claims
- 2192USRE47737EFilter medium and structureDONALDSON CO INC·Filed 2017·Granted Nov 26, 2019·4 cites·82 claims
- 2292US10226723B2Liquid filtration media, filter elements and methodsDONALDSON CO INC·Filed 2015·Granted Mar 12, 2019·5 cites·18 claims
- 2390US11565206B2Liquid filtration media, filter elements and methodsDONALDSON CO INC·Filed 2019·Granted Jan 31, 2023·3 cites·19 claims
- 2490US5250094ACeramic filter construction and methodDONALDSON CO INC·Filed 1992·Granted Oct 5, 1993·95 cites·13 claims
- 2588US8404014B2Aerosol separatorISRAEL JOSEPH·Filed 2006·Granted Mar 26, 2013·31 cites·10 claims
- 2688US2025360444A1Liquid filtration media, filter elements and methodsDONALDSON CO INC·Filed 2025·Application pending·0 cites
- 2785US2024229312A9High temperature treated mediaDONALDSON CO INC·Filed 2023·Application pending·0 cites
- 2883US12350613B2Liquid filtration media, filter elements and methodsDONALDSON CO INC·Filed 2023·Granted Jul 8, 2025·0 cites·19 claims
- 2982USRE50226EFilter medium and structureDONALDSON CO INC·Filed 2022·Granted Dec 3, 2024·0 cites·101 claims
- 3079US2023158430A1High efficiency synthetic filter mediaKNOWLTON TECH LLC·Filed 2023·Application pending·0 cites
- 3178US11547963B2High efficiency synthetic filter mediaKNOWLTON TECH LLC·Filed 2018·Granted Jan 10, 2023·1 cites·5 claims
- 3274US12172111B2Filter medium and breather filter structureDONALDSON CO INC·Filed 2022·Granted Dec 24, 2024·0 cites·10 claims
- 3373US11180876B2High temperature treated mediaLITTLE DANIEL·Filed 2012·Granted Nov 23, 2021·3 cites·23 claims
- 3470US10913022B2Process for utilizing a high efficiency synthetic filter mediaKNOWLTON TECH LLC·Filed 2018·Granted Feb 9, 2021·0 cites·12 claims
- 3562US2024035214A1Bicomponent fabrics with short fibersASCEND PERFORMANCE MAT OPERATIONS LLC·Filed 2023·Application pending·0 cites
- 3661US2024254661A1High population of closed c-shaped fibersEASTMAN CHEM CO·Filed 2022·Application pending·0 cites
- 3746US2011005394A1Media for removal of organic compoundsJORIMAN JON D·Filed 2008·Application pending·0 cites
- 3844US2011115102A1Process For Making Media For Use in Air/Oil SeparatorsDONALDSON CO INC·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →