Inventor · disambiguated record
David E. Sisk
Also filed as: SISK DAVID E
62 granted patents·15 pending applications·1,458 citations·filing 1986–2025
99Inventor score
Top patents by PatentIndex Score
77 records- 0199USD653734SScreened gasketSISK DAVID E·Filed 2010·Granted Feb 7, 2012·550 cites·1 claims
- 0296USD372765SGasketSISK DAVID E·Filed 1994·Granted Aug 13, 1996·54 cites·1 claims
- 0391US5540465APipe, valve and/or tee couplerFiled 1994·Granted Jul 30, 1996·64 cites·8 claims
- 0486US5360030AButterfly valve incorporating sleeve sealsSISK DAVID E·Filed 1993·Granted Nov 1, 1994·54 cites·3 claims
- 0586USD297678SCast hopper teeTANK TRAILER INC·Filed 1986·Granted Sep 13, 1988·28 cites·1 claims
- 0685US7055440B2Remotely operated manhole cover for a tankerCAPITAL FORMATION INC·Filed 2002·Granted Jun 6, 2006·32 cites·15 claims
- 0782US9328855B2Tee and unload line with integrated cam lockSISK DAVID E·Filed 2013·Granted May 3, 2016·6 cites·2 claims
- 0882USD673657SFluted drop teeBULK TANK INC·Filed 2012·Granted Jan 1, 2013·27 cites·1 claims
- 0982US7988386B2Split collar with offset hook and hinge hopper assemblyBULK TANK INC·Filed 2009·Granted Aug 2, 2011·15 cites·18 claims
- 1082US7520925B2Filter and silencer with a quick disconnect lidSURE SEAL INC·Filed 2006·Granted Apr 21, 2009·12 cites·10 claims
- 1182US5722666APipe coupler gasket with triangular sealing ridgesFiled 1996·Granted Mar 3, 1998·44 cites·1 claims
- 1281US6952996B2Remotely operated manhole cover for a tankerCAPITAL FORMATION INC·Filed 2002·Granted Oct 11, 2005·30 cites·18 claims
- 1380US8657898B2Air filter spin flow inlet/outlet housingSISK DAVID E·Filed 2011·Granted Feb 25, 2014·4 cites·17 claims
- 1480US4822001APositive fluid seal butterfly valveSISK DAVID E·Filed 1988·Granted Apr 18, 1989·35 cites·6 claims
- 1579US8419072B2Shallow angle elbowSISK DAVID E·Filed 2011·Granted Apr 16, 2013·5 cites·5 claims
- 1679US8091925B2Fluted hopper teeSISK DAVID E·Filed 2008·Granted Jan 10, 2012·10 cites·15 claims
- 1777US9057445B2Butterfly valve disc to attain accelerated flowSISK DAVID E·Filed 2013·Granted Jun 16, 2015·4 cites·16 claims
- 1877US8087816B2Aerator device inducing cyclonic flowSISK DAVID E·Filed 2008·Granted Jan 3, 2012·6 cites·21 claims
- 1977US4699357AReinforced industrial butterfly valveULTRAFLO CORP·Filed 1986·Granted Oct 13, 1987·34 cites·3 claims
- 2076USD722140SIntegrated teeSISK DAVID E·Filed 2012·Granted Feb 3, 2015·20 cites·1 claims
- 2176US6786362B2Swing-away hopper teeSURE SEAL INC·Filed 2002·Granted Sep 7, 2004·20 cites·9 claims
- 2275US5017053AAeration device for bulk material containersSISK DAVID E·Filed 1989·Granted May 21, 1991·34 cites·8 claims
- 2371US8807529B2Handle extension for butterfly valveSISK DAVID E·Filed 2012·Granted Aug 19, 2014·3 cites·9 claims
- 2471US8727306B2Valve handle for butterfly valve for bulk commodity hopper with teeSISK DAVID E·Filed 2012·Granted May 20, 2014·3 cites·20 claims
- 2569USD1090791SFilter tube holding grommetSISK DAVID E·Filed 2022·Granted Aug 26, 2025·4 cites·1 claims
- 2669US9175796B2Hopper tee with comformable arcuate closure memberSISK DAVID E·Filed 2013·Granted Nov 3, 2015·2 cites·5 claims
- 2769USD358202SReinforced structural teeSISK DAVID E·Filed 1994·Granted May 9, 1995·13 cites·1 claims
- 2869US4889318AMolded hopper teeSISK DAVID E·Filed 1988·Granted Dec 26, 1989·32 cites·5 claims
- 2969US4848396ACast hopper teeSISK DAVID E·Filed 1988·Granted Jul 18, 1989·33 cites·6 claims
- 3068USD726288SUnload elbow with spherical wear pocketSISK DAVID E·Filed 2013·Granted Apr 7, 2015·14 cites·1 claims
- 3167US9267611B2Multi-angle butterfly valve extension assemblySISK DAVID E·Filed 2013·Granted Feb 23, 2016·2 cites·5 claims
- 3267US5053063ADust filtering and collection systemSISK DAVID E·Filed 1990·Granted Oct 1, 1991·30 cites·14 claims
- 3362US6679289B2Swing check valveSURE SEAL INC·Filed 2001·Granted Jan 20, 2004·10 cites·6 claims
- 3460US12337269B2Vacuum filter assembly for processing bulk granular material and filter mounting assembly thereforeSISK DAVID E·Filed 2022·Granted Jun 24, 2025·0 cites·16 claims
- 3560US5387015AHopper teeFiled 1994·Granted Feb 7, 1995·25 cites·4 claims
- 3660US5207411AButterfly valve assemblySISK DAVID E·Filed 1992·Granted May 4, 1993·21 cites·15 claims
- 3759US12115473B2Pressure and heat molded polymer tube with interlocking grommetBULK TANK INC·Filed 2022·Granted Oct 15, 2024·0 cites·20 claims
- 3859USD678475SButterfly valve handle extensionSISK DAVID E·Filed 2011·Granted Mar 19, 2013·10 cites·1 claims
- 3959US5988867APreassembled fluidizing device having expansive air passage stimulating enhanced flow of granular materials in tank trailers and containersFiled 1998·Granted Nov 23, 1999·15 cites·11 claims
- 4059US5842681APivotal hopper tee with alignable swing-away hopper tee assemblyFiled 1996·Granted Dec 1, 1998·28 cites·13 claims
- 4157US12280327B2Vacuum filter assembly for cleansing air for use in transfer of bulk, granular material as in conveying vehiclesBULK TANK INC·Filed 2022·Granted Apr 22, 2025·0 cites·15 claims
- 4256US4909814ADust filtering and collection systemSISK DAVID E·Filed 1988·Granted Mar 20, 1990·18 cites·25 claims
- 4356US2025257802A1Automated bulk tank pressure exhaust valve with quick connect coupling and valve closed indicator lightBULK TANK INC·Filed 2025·Application pending·0 cites
- 4455USD711509SAeration butterfly valveSISK DAVID E·Filed 2012·Granted Aug 19, 2014·8 cites·1 claims
- 4555US6170976B1Preassembled fluidizing device having expansive air passage stimulating enhanced flow of granular materials in tank trailers and containersSURE SEAL INC·Filed 1999·Granted Jan 9, 2001·20 cites·2 claims
- 4655US5676404ALow profile flanged teeFiled 1996·Granted Oct 14, 1997·20 cites·6 claims
- 4755US2025050797A1Cam and cam post assemblies for securing a filter canister tube plate on a support ringBULK TANK INC·Filed 2024·Application pending·0 cites
- 4855US2022088522A1Dust and debris filtration system for cleaning air used in the conveyance of granular material to and from the silo, dry bulk trailer, rail car, and other transportation and conveying meansSISK DAVID E·Filed 2021·Application pending·0 cites
- 4954US2022176288A1Filter tube holding grommet for filtration systemSISK DAVID E·Filed 2021·Application pending·0 cites
- 5053US2014191147A1Aeration butterfly valveSISK DAVID E·Filed 2013·Application pending·0 cites
Showing the top 50 of 77 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →