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Mark Spruce — 54 Patents

Rolls-Royce Plc: 53 patents #11 of 2,886Top 1%

RDRolls-Royce Deutschland: 4 patents #72 of 638Top 15%

ILIneos Fluor Holdings Limited: 1 patents #12 of 25Top 50%

Derby, GB: #4 of 964 inventorsTop 1%

Overall (All Time): #46,969 of 4,157,543Top 2%

54 Patents All Time

Mark Spruce has been granted 54 US patents while listed as an inventor at Rolls-Royce Plc. The first was granted in 2003 and the most recent in September 2025. Mark Spruce ranks #46,969 of 4,157,543 US inventors in our database (top 1.1%). Patent records list Mark Spruce in Derby, GB.

Patents per Year

Issued Patents All Time

Showing 1–25 of 54 patents

Patent #	Title	Co-Inventors	Date
12421868	Shaft for a gas turbine engine	Russell ADKINS, Christopher Jones, Stephen C. Drew	2025-09-23
12385441	Gearboxes for aircraft gas turbine engines	—	2025-08-12
12359628	High power epicyclic gearbox and operation thereof	—	2025-07-15
12297745	Gearboxes for aircraft gas turbine engines	—	2025-05-13
12297779	Geared gas turbine engine	—	2025-05-13
12221929	High power epicyclic gearbox and operation thereof	—	2025-02-11
12215632	Aircraft engine	—	2025-02-04
12173661	Gearboxes for aircraft gas turbine engines	—	2024-12-24
12116938	High power epicyclic gearbox and operation thereof	—	2024-10-15
12065975	High-power epicyclic gearbox and operation thereof	—	2024-08-20
11946382	Gearboxes for aircraft gas turbine engines	—	2024-04-02
11898498	Method and system for reducing cross-shaft vibrations	Greg Blake, Lucia CICIRIELLO, Matthew Robert Wilson	2024-02-13
11852081	Gearboxes for aircraft gas turbine engines	—	2023-12-26
11840965	Aircraft engine	—	2023-12-12
11840964	Shaft component and method for producing a shaft component	Fiona Halliday	2023-12-12
11788616	Journal bearing	Fiona Halliday	2023-10-17
11781488	Gearboxes for aircraft gas turbine engines	—	2023-10-10
11781487	High power epicyclic gearbox and operation thereof	—	2023-10-10
11739660	Gearboxes for aircraft gas turbine engines	—	2023-08-29
11725591	High power epicyclic gearbox and operation thereof	—	2023-08-15
11692492	Gearboxes for aircraft gas turbine engines	—	2023-07-04
11643976	High power epicyclic gearbox and operation thereof	—	2023-05-09
11643974	Reliable gearbox for gas turbine engine	—	2023-05-09
11542873	Gearboxes for aircraft gas turbine engines	—	2023-01-03
11525408	Aircraft engine	—	2022-12-13