Inventor · disambiguated record
Stephen Arthur Langrell
Also filed as: LANGRELL STEPHEN ARTHUR
11 granted patents·7 pending applications·15 citations·filing 2017–2024
84Inventor score
Files withNORTHQUIP INC18
Top patents by PatentIndex Score
18 records- 0193US11445698B2Livestock chute with both parallel and V-squeeze capability, a pull-up neck extender and a robust head gate trackNORTHQUIP INC·Filed 2022·Granted Sep 20, 2022·4 cites·16 claims
- 0282US12349661B2Portable livestock corral with dual and single alley modes of operation, bud box capability, and transport safety barNORTHQUIP INC·Filed 2022·Granted Jul 8, 2025·1 cites·23 claims
- 0378US2024373814A1Modular Livestock Alley Construction and Strategic Cladding of Livestock Handling Equipment to Optimize Livestock Flow TherethroughNORTHQUIP INC·Filed 2024·Application pending·0 cites
- 0469US9936673B2Locking device for a livestock head gateNORTHQUIP INC·Filed 2017·Granted Apr 10, 2018·3 cites·18 claims
- 0567US12336500B2Livestock chute with both parallel and V-squeeze capability, a pull-up neck extender and a robust head gate trackNORTHQUIP INC·Filed 2021·Granted Jun 24, 2025·0 cites·20 claims
- 0664US12075749B2Modular livestock alley construction and strategic cladding of livestock handling equipment to optimize livestock flow therethroughNORTHQUIP INC·Filed 2019·Granted Sep 3, 2024·0 cites·12 claims
- 0764US2025072390A1Livestock Head Holder with Over-Center Drop Prevention and Improved Height AdjustabilityNORTHQUIP INC·Filed 2024·Application pending·0 cites
- 0860US11129355B2Portable livestock handling apparatus with foldable force tub and extendable/collapsible chassisNORTHQUIP INC·Filed 2021·Granted Sep 28, 2021·0 cites·20 claims
- 0958USD1047228SPerforated gate panel for a livestock gateNORTHQUIP INC·Filed 2022·Granted Oct 15, 2024·2 cites·1 claims
- 1054US2022272939A1Reversible Sliding-Handle Drive Assembly for a Livestock Head GateNORTHQUIP INC·Filed 2019·Application pending·0 cites
- 1153US11317597B2Livestock force tub with supplemental wall section, auxiliary space and reduced opacity exit-adjacent wall sectionsNORTHQUIP INC·Filed 2019·Granted May 3, 2022·0 cites·39 claims
- 1252US2024292809A1Livestock Headgate with Back-Out Prevention Capability for Wide-Necked LivestockNORTHQUIP INC·Filed 2021·Application pending·0 cites
- 1348US2022287266A1Side-Gate Assembly for Needling Access in a Livestock Squeeze ChuteNORTHQUIP INC·Filed 2019·Application pending·0 cites
- 1448US2022248632A1Adaptable Livestock Head Holder with Lower Scoop Extensions and Upper StabilizerNORTHQUIP INC·Filed 2019·Application pending·0 cites
- 1542USD881676SSlam latch for a gateNORTHQUIP INC·Filed 2018·Granted Apr 21, 2020·3 cites·1 claims
- 1642US2020062163A1Portable Livestock Handling Apparatus Employing Front-Only Lifting Jack for Transition Between Transport Mode and Field UseNORTHQUIP INC·Filed 2019·Application pending·0 cites
- 1738USD943767SLivestock head gateNORTHQUIP INC·Filed 2019·Granted Feb 15, 2022·2 cites·1 claims
- 1828USD957749SLivestock handling apparatusNORTHQUIP INC·Filed 2019·Granted Jul 12, 2022·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →