Inventor · disambiguated record
Mark Spruce
Also filed as: SPRUCE MARK
54 granted patents·13 pending applications·169 citations·filing 2001–2025
98Inventor score
Top patents by PatentIndex Score
67 records- 0198US11149652B1Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2020·Granted Oct 19, 2021·13 cites·17 claims
- 0298US11022044B1Geared gas turbine engineROLLS ROYCE PLC·Filed 2020·Granted Jun 1, 2021·14 cites·31 claims
- 0398US10982563B1Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2020·Granted Apr 20, 2021·20 cites·20 claims
- 0498US10961918B1Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2020·Granted Mar 30, 2021·8 cites·18 claims
- 0598US10859001B1Gas turbine engine having flight cycle ratioROLLS ROYCE PLC·Filed 2020·Granted Dec 8, 2020·13 cites·18 claims
- 0698US10851715B1High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2020·Granted Dec 1, 2020·7 cites·20 claims
- 0798US10837370B1Gas turbine engine including gearbox structure having stiffnessROLLS ROYCE PLC·Filed 2020·Granted Nov 17, 2020·18 cites·19 claims
- 0898US10808626B1High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2020·Granted Oct 20, 2020·11 cites·17 claims
- 0997US11371440B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2021·Granted Jun 28, 2022·4 cites·15 claims
- 1097US10914241B1High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2020·Granted Feb 9, 2021·5 cites·20 claims
- 1196US11421552B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2021·Granted Aug 23, 2022·3 cites·22 claims
- 1296US10823084B1Geared gas turbine engineROLLS ROYCE PLC·Filed 2020·Granted Nov 3, 2020·6 cites·10 claims
- 1395US11643974B2Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2021·Granted May 9, 2023·2 cites·20 claims
- 1495US10830154B1Gas turbine engine having fan shaft stiffness ratioROLLS ROYCE PLC·Filed 2020·Granted Nov 10, 2020·5 cites·18 claims
- 1594US12116938B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2023·Granted Oct 15, 2024·1 cites·20 claims
- 1693US11408354B2Aircraft engineROLLS ROYCE PLC·Filed 2020·Granted Aug 9, 2022·3 cites·20 claims
- 1793US11359548B2Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2020·Granted Jun 14, 2022·5 cites·20 claims
- 1890US10816087B2Planetary gearing and planet pin for a planetary gearingROLLS ROYCE DEUTSCHLAND LTD & CO KG·Filed 2018·Granted Oct 27, 2020·6 cites·18 claims
- 1990US2025341187A1Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2025·Application pending·0 cites
- 2089US2025314208A1High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2025·Application pending·0 cites
- 2188US12297779B2Geared gas turbine engineROLLS ROYCE PLC·Filed 2024·Granted May 13, 2025·1 cites·20 claims
- 2288US11085523B2Planetary gearingROLLS ROYCE DEUTSCHLAND LTD & CO KG·Filed 2018·Granted Aug 10, 2021·6 cites·16 claims
- 2388US10767755B2Planetary gearing and planet pin for a planetary gearingROLLS ROYCE DEUTSCHLAND LTD & CO KG·Filed 2018·Granted Sep 8, 2020·5 cites·20 claims
- 2487US12359628B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2024·Granted Jul 15, 2025·0 cites·20 claims
- 2587US11781487B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2020·Granted Oct 10, 2023·2 cites·17 claims
- 2687US11274729B2Turbofan gas turbine engine with gearboxROLLS ROYCE PLC·Filed 2019·Granted Mar 15, 2022·4 cites·20 claims
- 2787US2025129751A1Aircraft engineROLLS ROYCE PLC·Filed 2024·Application pending·0 cites
- 2885US2025250912A1Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2025·Application pending·0 cites
- 2985US2025035051A1Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2024·Application pending·0 cites
- 3083US12215632B2Aircraft engineROLLS ROYCE PLC·Filed 2023·Granted Feb 4, 2025·0 cites·20 claims
- 3182US12297745B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2024·Granted May 13, 2025·0 cites·20 claims
- 3282US12173661B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2023·Granted Dec 24, 2024·0 cites·20 claims
- 3381US12385441B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2023·Granted Aug 12, 2025·0 cites·20 claims
- 3480US12065975B2High-power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2023·Granted Aug 20, 2024·0 cites·20 claims
- 3580US11781488B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2021·Granted Oct 10, 2023·1 cites·20 claims
- 3679US11946382B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2023·Granted Apr 2, 2024·0 cites·20 claims
- 3778US12221929B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2023·Granted Feb 11, 2025·0 cites·20 claims
- 3877US11643976B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2022·Granted May 9, 2023·0 cites·20 claims
- 3977US11542873B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2022·Granted Jan 3, 2023·0 cites·20 claims
- 4077US11162431B2Gas turbine engine having gearbox support shear stress ratioROLLS ROYCE PLC·Filed 2020·Granted Nov 2, 2021·1 cites·20 claims
- 4176US11512648B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2021·Granted Nov 29, 2022·0 cites·20 claims
- 4275US11840965B2Aircraft engineROLLS ROYCE PLC·Filed 2022·Granted Dec 12, 2023·0 cites·20 claims
- 4374US11852081B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2022·Granted Dec 26, 2023·0 cites·20 claims
- 4474US11739660B2Gearboxes for aircraft gas turbine enginesROLLS ROYCE PLC·Filed 2022·Granted Aug 29, 2023·0 cites·20 claims
- 4574US11525408B2Aircraft engineROLLS ROYCE PLC·Filed 2021·Granted Dec 13, 2022·0 cites·19 claims
- 4674US11143112B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2020·Granted Oct 12, 2021·0 cites·20 claims
- 4773US2023228218A1Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2023·Application pending·0 cites
- 4872US11378015B2Reliable gearbox for gas turbine engineROLLS ROYCE PLC·Filed 2021·Granted Jul 5, 2022·0 cites·20 claims
- 4972US11313438B2Turbofan gas turbine engine with gearboxROLLS ROYCE PLC·Filed 2019·Granted Apr 26, 2022·1 cites·20 claims
- 5071US11725591B2High power epicyclic gearbox and operation thereofROLLS ROYCE PLC·Filed 2022·Granted Aug 15, 2023·0 cites·18 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →