Inventor · disambiguated record
Max A. Metcalf
Also filed as: METCALF MAX A · METCALF MAX ALLEN
17 granted patents·3 pending applications·66 citations·filing 2013–2025
91Inventor score
Files withCHARLES MACHINE WORKS20
Top patents by PatentIndex Score
20 records- 0197US9206851B2Horizontal directional drill pipe drive connection with locking featureCHARLES MACHINE WORKS·Filed 2013·Granted Dec 8, 2015·34 cites·18 claims
- 0294US10358880B2Pipe storage boxCHARLES MACHINE WORKS·Filed 2017·Granted Jul 23, 2019·13 cites·23 claims
- 0393US11686180B2Virtual brake systemCHARLES MACHINE WORKS·Filed 2021·Granted Jun 27, 2023·2 cites·20 claims
- 0490US10724347B2Virtual brake systemCHARLES MACHINE WORKS·Filed 2017·Granted Jul 28, 2020·5 cites·14 claims
- 0587US11118430B2Virtual brake systemCHARLES MACHINE WORKS·Filed 2020·Granted Sep 14, 2021·2 cites·18 claims
- 0684US10808466B2Pipe handling assemblyCHARLES MACHINE WORKS·Filed 2019·Granted Oct 20, 2020·4 cites·20 claims
- 0784US9834995B2Horizontal directional drill pipe drive connection with locking featureCHARLES MACHINE WORKS·Filed 2015·Granted Dec 5, 2017·4 cites·35 claims
- 0880US10557332B2Spindle brake logicCHARLES MACHINE WORKS·Filed 2017·Granted Feb 11, 2020·1 cites·19 claims
- 0976US12215586B2Apparatus for capturing axial force on an inner drive memberCHARLES MACHINE WORKS·Filed 2023·Granted Feb 4, 2025·0 cites·18 claims
- 1076US12116855B2Virtual brake systemCHARLES MACHINE WORKS·Filed 2023·Granted Oct 15, 2024·0 cites·20 claims
- 1175US2025179875A1Apparatus for capturing axial force on an inner drive memberCHARLES MACHINE WORKS·Filed 2025·Application pending·0 cites
- 1271US11078731B2Pipe storage boxCHARLES MACHINE WORKS·Filed 2019·Granted Aug 3, 2021·1 cites·20 claims
- 1370US11708724B2Apparatus for capturing axial force on an inner drive memberCHARLES MACHINE WORKS·Filed 2021·Granted Jul 25, 2023·0 cites·16 claims
- 1462US11708725B2Drill string rotation brakeCHARLES MACHINE WORKS·Filed 2021·Granted Jul 25, 2023·0 cites·20 claims
- 1559US10851599B2Horizontal directional drill pipe drive connection with locking featureCHARLES MACHINE WORKS·Filed 2017·Granted Dec 1, 2020·0 cites·24 claims
- 1653US11391100B2Pipe storage boxCHARLES MACHINE WORKS·Filed 2020·Granted Jul 19, 2022·0 cites·19 claims
- 1753US11041342B2Drill string rotation brakeCHARLES MACHINE WORKS·Filed 2019·Granted Jun 22, 2021·0 cites·19 claims
- 1852US2024344397A1Virtual brake systemCHARLES MACHINE WORKS·Filed 2024·Application pending·0 cites
- 1950US2017130540A1Makeup And Breakout System For Horizontal Directional DrillingCHARLES MACHINE WORKS·Filed 2016·Application pending·0 cites
- 2047US10407991B2Drill string rotation brakeCHARLES MACHINE WORKS·Filed 2015·Granted Sep 10, 2019·0 cites·30 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →