Inventor · disambiguated record
Michael D. Langenfeld
Also filed as: LANGENFELD MICHAEL D · LANGENFELD MICHAEL DAVID
13 granted patents·37 citations·filing 2011–2023
89Inventor score
Top patents by PatentIndex Score
13 records- 0192US10851588B2Dual rod directional drilling systemVERMEER MFG CO·Filed 2018·Granted Dec 1, 2020·6 cites·24 claims
- 0291US11149501B2Rod coupler and coupled rod assemblyVERMEER MFG CO·Filed 2020·Granted Oct 19, 2021·5 cites·26 claims
- 0390US11697967B2Pullback system for drilling toolVERMEER MFG CO·Filed 2020·Granted Jul 11, 2023·3 cites·15 claims
- 0490US10711520B2Dual rod directional drilling systemVERMEER MFG CO·Filed 2018·Granted Jul 14, 2020·7 cites·26 claims
- 0587US11105156B2Pullback system for drilling toolVERMEER MFG CO·Filed 2020·Granted Aug 31, 2021·3 cites·23 claims
- 0684US8991490B2Tapered thread configuration with improved durabilityLANGENFELD MICHAEL D·Filed 2011·Granted Mar 31, 2015·8 cites·27 claims
- 0782US11808151B2Dual rod directional drilling systemVERMEER MFG CO·Filed 2021·Granted Nov 7, 2023·1 cites·18 claims
- 0880US9605491B2Tapered thread configuration with improved durabilityVERMEER MFG CO·Filed 2015·Granted Mar 28, 2017·2 cites·28 claims
- 0979US10961779B2Dual rod directional drilling systemVERMEER MFG CO·Filed 2020·Granted Mar 30, 2021·1 cites·20 claims
- 1075US12352165B2Pullback system for drilling toolVERMEER MFG CO·Filed 2023·Granted Jul 8, 2025·0 cites·20 claims
- 1167US9016366B2Tapered thread configuration with improved durabilityVERMEER MFG CO·Filed 2012·Granted Apr 28, 2015·1 cites·16 claims
- 1259US10227832B2Tapered thread configuration with improved durabilityVERMEER MFG CO·Filed 2017·Granted Mar 12, 2019·0 cites·21 claims
- 1350US11913287B2Mounting arrangement for pullback adaptorVERMEER MFG CO·Filed 2021·Granted Feb 27, 2024·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →