Assignee
NEENAH FOUNDRY COMPANY
US·20 granted patents·2 pending applications·304 citations·filing 1977–2022
Top patents by PatentIndex Score
22 records- 0194US9416516B2Pressure responsive locking latch arrangement for manhole coversNEENAH FOUNDRY COMPANY·Filed 2015·Granted Aug 16, 2016·9 cites·6 claims
- 0291US9909275B2Manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2016·Granted Mar 6, 2018·7 cites·8 claims
- 0389US7695213B1Cam-lift for a manhole coverNEENAH FOUNDRY COMPANY·Filed 2008·Granted Apr 13, 2010·32 cites·15 claims
- 0488US7216459B1Access hatch cover assembly with lift-assist assembly and method thereforNEENAH FOUNDRY COMPANY·Filed 2003·Granted May 15, 2007·48 cites·14 claims
- 0586US7744304B2Socket hinged construction casting assemblyNEENAH FOUNDRY COMPANY·Filed 2006·Granted Jun 29, 2010·15 cites·5 claims
- 0685US9915052B2Manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2016·Granted Mar 13, 2018·5 cites·9 claims
- 0784US7637695B1Heavy duty trench frame and grate assemblyNEENAH FOUNDRY COMPANY·Filed 2007·Granted Dec 29, 2009·22 cites·19 claims
- 0882US7094000B2Socket hinged construction casting assemblyNEENAH FOUNDRY COMPANY·Filed 2006·Granted Aug 22, 2006·12 cites·12 claims
- 0981US9863115B2Controlled pressure release manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2015·Granted Jan 9, 2018·3 cites·20 claims
- 1081USD622421SGrateNEENAH FOUNDRY COMPANY·Filed 2010·Granted Aug 24, 2010·28 cites·1 claims
- 1179US10968595B2Manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2018·Granted Apr 6, 2021·3 cites·11 claims
- 1279US7108447B2Construction castings with ball and socket connectorsNEENAH FOUNDRY COMPANY·Filed 2004·Granted Sep 19, 2006·26 cites·2 claims
- 1370US5443327AMethod and apparatus for forming a lined trenchNEENAH FOUNDRY COMPANY·Filed 1994·Granted Aug 22, 1995·45 cites·17 claims
- 1469US11001982B2Manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2017·Granted May 11, 2021·1 cites·20 claims
- 1569US10233609B2Floating manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2017·Granted Mar 19, 2019·2 cites·20 claims
- 1668US4101236ASealing manhole cover for use on existing unsealed sanitary sewer manhole cover framesNEENAH FOUNDRY COMPANY·Filed 1977·Granted Jul 18, 1978·29 cites·4 claims
- 1753US11414829B2Hybrid manhole coverNEENAH FOUNDRY COMPANY·Filed 2020·Granted Aug 16, 2022·0 cites·20 claims
- 1852US10954649B2Floating manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2019·Granted Mar 23, 2021·0 cites·20 claims
- 1952USD648238SDetectable warning plateNEENAH FOUNDRY COMPANY·Filed 2009·Granted Nov 8, 2011·13 cites·1 claims
- 2046US2024301646A1Manhole cover assemblyNEENAH FOUNDRY COMPANY·Filed 2022·Application pending·0 cites
- 2143USD673690SFrame and curb boxNEENAH FOUNDRY COMPANY·Filed 2012·Granted Jan 1, 2013·4 cites·1 claims
- 2240US2019091706A1Cavitation nozzle assembly for sand reclamation unitNEENAH FOUNDRY COMPANY·Filed 2017·Application pending·0 cites
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