Inventor · disambiguated record
David P. Engvall
Also filed as: ENGVALL DAVID · ENGVALL DAVID P · ENGVALL DAVID PHILIP
28 granted patents·13 pending applications·709 citations·filing 1992–2024
97Inventor score
Files withIRWIN IND TOOL CO22BLACK & DECKER INC4CHERVENAK THOMAS M3ALDREDGE ROBERT L2ENGVALL DAVID P2
Top patents by PatentIndex Score
41 records- 0195US8122792B2Self-adjusting locking pliersENGVALL DAVID P·Filed 2010·Granted Feb 28, 2012·23 cites·19 claims
- 0294US10357874B2Apparatus and method for a storage container with integrated tableIRWIN IND TOOL CO·Filed 2016·Granted Jul 23, 2019·43 cites·19 claims
- 0394US5394959AScissor lift apparatus for work platforms and the likeSIMON AERIALS INC·Filed 1992·Granted Mar 7, 1995·68 cites·23 claims
- 0493US8056451B2Locking pliersCHERVENAK THOMAS M·Filed 2009·Granted Nov 15, 2011·33 cites·17 claims
- 0593US7861622B2Locking pliersIRWIN IND TOOL CO·Filed 2008·Granted Jan 4, 2011·31 cites·8 claims
- 0693US7472632B2Locking pliersIRWIN IND TOOL CO·Filed 2007·Granted Jan 6, 2009·32 cites·9 claims
- 0792US8656813B1Locking pliersALDREDGE ROBERT L·Filed 2013·Granted Feb 25, 2014·14 cites·19 claims
- 0891US5178354ATube holder and method of using the sameENGVALL DAVID P·Filed 1992·Granted Jan 12, 1993·93 cites·13 claims
- 0990US6327791B1Chain code position detectorUS GOV SEC COMMERCE·Filed 2000·Granted Dec 11, 2001·98 cites·35 claims
- 1088US7726217B2Self-adjusting locking pliersIRWIN IND TOOL CO·Filed 2006·Granted Jun 1, 2010·18 cites·20 claims
- 1188USD543812SGroovelock toolIRWIN IND TOOL CO·Filed 2004·Granted Jun 5, 2007·38 cites·1 claims
- 1284US8776646B2Locking pliersCHERVENAK THOMAS M·Filed 2011·Granted Jul 15, 2014·9 cites·20 claims
- 1384USD635427SLocking pliers jawIRWIN IND TOOL CO·Filed 2009·Granted Apr 5, 2011·26 cites·1 claims
- 1483USD651060SLocking pliers jawCHERVENAK THOMAS M·Filed 2011·Granted Dec 27, 2011·29 cites·1 claims
- 1578US11148209B2Power tool chuckBLACK & DECKER INC·Filed 2019·Granted Oct 19, 2021·1 cites·20 claims
- 1677US6439341B1Apparatus for monitoring loading of a liftSNORKEL INTERNATIONAL INC·Filed 2001·Granted Aug 27, 2002·23 cites·3 claims
- 1776US7040201B2Quick adjusting pliersIRWIN IND TOOL CO·Filed 2003·Granted May 9, 2006·18 cites·15 claims
- 1875US7509895B2Self-adjusting locking pliersIRWIN IND TOOL CO·Filed 2006·Granted Mar 31, 2009·10 cites·19 claims
- 1972US9789552B2Saw blade and saw blade tooth constructionIRWIN IND TOOL CO·Filed 2014·Granted Oct 17, 2017·4 cites·20 claims
- 2072US7089832B2Quick adjusting pliersIRWIN IND TOOL CO·Filed 2005·Granted Aug 15, 2006·8 cites·7 claims
- 2170US7293485B2Quick adjusting pliersIRWIN IND TOOL CO·Filed 2006·Granted Nov 13, 2007·7 cites·2 claims
- 2270USD535172STool gripIRWIN IND TOOL CO·Filed 2005·Granted Jan 16, 2007·17 cites·1 claims
- 2370US7100480B2Quick adjusting pliersIRWIN IND TOOL CO·Filed 2003·Granted Sep 5, 2006·14 cites·25 claims
- 2470US5913379AArticulated aerial work platform systemFIGGIE INT INC·Filed 1996·Granted Jun 22, 1999·27 cites·13 claims
- 2568USD535542STool gripIRWIN IND TOOL CO·Filed 2005·Granted Jan 23, 2007·16 cites·1 claims
- 2667US12290864B2Power tool chuckBLACK & DECKER INC·Filed 2021·Granted May 6, 2025·0 cites·21 claims
- 2765US2025326090A1Quick release adjustable plierSTANLEY BLACK & DECKER INC·Filed 2024·Application pending·0 cites
- 2860US9533400B1Locking pliersALDREDGE ROBERT L·Filed 2014·Granted Jan 3, 2017·1 cites·12 claims
- 2960US2023381926A1Adjustable plier with dual adjustBLACK & DECKER INC·Filed 2023·Application pending·0 cites
- 3059US2010307640A1Cutting edge and cutting toolDURFEE LA VERNE R·Filed 2009·Application pending·0 cites
- 3155US2024051161A1Multi-link cutting plierBLACK & DECKER INC·Filed 2023·Application pending·0 cites
- 3255US2024286266A1Universal Hex Tool with Adjustable Securing MechanismSTANLEY BLACK & DECKER INC·Filed 2023·Application pending·0 cites
- 3353US2010218648A1Locking pliers with one-hand adjustmentIRWIN IND TOOL CO·Filed 2009·Application pending·0 cites
- 3453US2010018364A1Quick adjusting multi-position pliersIRWIN IND TOOL CO·Filed 2008·Application pending·0 cites
- 3553US2010018362A1Locking pliersIRWIN IND TOOL CO·Filed 2008·Application pending·0 cites
- 3652USD535173STool gripIRWIN IND TOOL CO·Filed 2005·Granted Jan 16, 2007·8 cites·1 claims
- 3743US2011258860A1Optimized mechanical advantage cutting toolIRWIN IND TOOL CO·Filed 2011·Application pending·0 cites
- 3841US2018072337A1Waste receptacle dollies and anchorsRUBBERMAID COMMERCIAL PROD LLC·Filed 2017·Application pending·0 cites
- 3939US2017292821A1Tape measure with flexible finger brake and related methodIRWIN IND TOOL CO·Filed 2017·Application pending·0 cites
- 4038US2011259149A1Method and apparatus for a cutting toolIRWIN IND TOOL CO·Filed 2011·Application pending·0 cites
- 4133US2015247716A1Tape measureIRWIN IND TOOL CO·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →