Individual holder
SISK DAVID E
US·43 granted patents·12 pending applications·1,032 citations·filing 1988–2022
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
55 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
- 0386US5360030AButterfly valve incorporating sleeve sealsSISK DAVID E·Filed 1993·Granted Nov 1, 1994·54 cites·3 claims
- 0482US9328855B2Tee and unload line with integrated cam lockSISK DAVID E·Filed 2013·Granted May 3, 2016·6 cites·2 claims
- 0580US8657898B2Air filter spin flow inlet/outlet housingSISK DAVID E·Filed 2011·Granted Feb 25, 2014·4 cites·17 claims
- 0680US4822001APositive fluid seal butterfly valveSISK DAVID E·Filed 1988·Granted Apr 18, 1989·35 cites·6 claims
- 0779US8419072B2Shallow angle elbowSISK DAVID E·Filed 2011·Granted Apr 16, 2013·5 cites·5 claims
- 0879US8091925B2Fluted hopper teeSISK DAVID E·Filed 2008·Granted Jan 10, 2012·10 cites·15 claims
- 0977US9057445B2Butterfly valve disc to attain accelerated flowSISK DAVID E·Filed 2013·Granted Jun 16, 2015·4 cites·16 claims
- 1077US8087816B2Aerator device inducing cyclonic flowSISK DAVID E·Filed 2008·Granted Jan 3, 2012·6 cites·21 claims
- 1176USD722140SIntegrated teeSISK DAVID E·Filed 2012·Granted Feb 3, 2015·20 cites·1 claims
- 1275US5017053AAeration device for bulk material containersSISK DAVID E·Filed 1989·Granted May 21, 1991·34 cites·8 claims
- 1371US8807529B2Handle extension for butterfly valveSISK DAVID E·Filed 2012·Granted Aug 19, 2014·3 cites·9 claims
- 1471US8727306B2Valve handle for butterfly valve for bulk commodity hopper with teeSISK DAVID E·Filed 2012·Granted May 20, 2014·3 cites·20 claims
- 1569USD1090791SFilter tube holding grommetSISK DAVID E·Filed 2022·Granted Aug 26, 2025·4 cites·1 claims
- 1669US9175796B2Hopper tee with comformable arcuate closure memberSISK DAVID E·Filed 2013·Granted Nov 3, 2015·2 cites·5 claims
- 1769USD358202SReinforced structural teeSISK DAVID E·Filed 1994·Granted May 9, 1995·13 cites·1 claims
- 1869US4889318AMolded hopper teeSISK DAVID E·Filed 1988·Granted Dec 26, 1989·32 cites·5 claims
- 1969US4848396ACast hopper teeSISK DAVID E·Filed 1988·Granted Jul 18, 1989·33 cites·6 claims
- 2068USD726288SUnload elbow with spherical wear pocketSISK DAVID E·Filed 2013·Granted Apr 7, 2015·14 cites·1 claims
- 2167US9267611B2Multi-angle butterfly valve extension assemblySISK DAVID E·Filed 2013·Granted Feb 23, 2016·2 cites·5 claims
- 2267US5053063ADust filtering and collection systemSISK DAVID E·Filed 1990·Granted Oct 1, 1991·30 cites·14 claims
- 2360US12337269B2Vacuum filter assembly for processing bulk granular material and filter mounting assembly thereforeSISK DAVID E·Filed 2022·Granted Jun 24, 2025·0 cites·16 claims
- 2460US5207411AButterfly valve assemblySISK DAVID E·Filed 1992·Granted May 4, 1993·21 cites·15 claims
- 2559USD678475SButterfly valve handle extensionSISK DAVID E·Filed 2011·Granted Mar 19, 2013·10 cites·1 claims
- 2656US4909814ADust filtering and collection systemSISK DAVID E·Filed 1988·Granted Mar 20, 1990·18 cites·25 claims
- 2755USD711509SAeration butterfly valveSISK DAVID E·Filed 2012·Granted Aug 19, 2014·8 cites·1 claims
- 2855US2022088522A1Dust 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
- 2954US2022176288A1Filter tube holding grommet for filtration systemSISK DAVID E·Filed 2021·Application pending·0 cites
- 3053US2014191147A1Aeration butterfly valveSISK DAVID E·Filed 2013·Application pending·0 cites
- 3152US10150071B2Filter guide ringSISK DAVID E·Filed 2014·Granted Dec 11, 2018·0 cites·7 claims
- 3252USD678471SValve with handle extensionSISK DAVID E·Filed 2011·Granted Mar 19, 2013·7 cites·1 claims
- 3352US2016040786A1Aeration butterfly valveSISK DAVID E·Filed 2015·Application pending·0 cites
- 3452US2013076021A1Structured tee with wear pocketSISK DAVID E·Filed 2011·Application pending·0 cites
- 3551US5067856AIn-line air filter for dry bulk tank trailersSISK DAVID E·Filed 1990·Granted Nov 26, 1991·20 cites·6 claims
- 3651US2014353962A1Structured tee with wear pocketSISK DAVID E·Filed 2014·Application pending·0 cites
- 3749US12005551B2Adjustable pivot bolt for a sealed manhole clampSISK DAVID E·Filed 2020·Granted Jun 11, 2024·0 cites·17 claims
- 3849USD678474SArcuate disc for butterfly valveSISK DAVID E·Filed 2011·Granted Mar 19, 2013·6 cites·1 claims
- 3947US10753526B2Unload elbow with spherical wear pocketSISK DAVID E·Filed 2015·Granted Aug 25, 2020·0 cites·13 claims
- 4047US2013307262A1Structure tee with wear pocketSISK DAVID E·Filed 2013·Application pending·0 cites
- 4146USD678472SValve handleSISK DAVID E·Filed 2011·Granted Mar 19, 2013·5 cites·1 claims
- 4244US9677672B2Butterfly valve having integral gaskets for its inlet and outlet seatsSISK DAVID E·Filed 2015·Granted Jun 13, 2017·0 cites·3 claims
- 4344US2005248098A1Gasket for a coupler upon a rail car, tank trailer, or related meansSISK DAVID E·Filed 2005·Application pending·0 cites
- 4443US10145500B2Structured tee with wear pocketSISK DAVID E·Filed 2017·Granted Dec 4, 2018·0 cites·20 claims
- 4543USD652904SAir filter inlet/outlet housingSISK DAVID E·Filed 2011·Granted Jan 24, 2012·4 cites·1 claims
- 4643US2010320758A1Pipe coupler with split gasket and gripping clipsSISK DAVID E·Filed 2010·Application pending·0 cites
- 4743US2022065363A1Composite valve handleSISK DAVID E·Filed 2021·Application pending·0 cites
- 4842USD696748SCombined butterfly valve stem and discSISK DAVID E·Filed 2011·Granted Dec 31, 2013·4 cites·1 claims
- 4941US10766694B2Alternative bottom drop and straight tee discharge from bulk tank having various extensions for automatic and manual operations of the tee valveSISK DAVID E·Filed 2019·Granted Sep 8, 2020·0 cites·9 claims
- 5040US5030037APorous filter pad for fluid pressure conveying systemsSISK DAVID E·Filed 1988·Granted Jul 9, 1991·7 cites·24 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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