Inventor

DAVID J. THOMAS

Inventor

US

Overview

2021–2026

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 39 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F01Dprimary

F01DNon-positive displacement machines or engines, e.g. steam turbines35%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants35%

Y02TClimate change mitigation technologies related to transportation21%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges3%

F16JPistons3%

C04BLime, magnesia2%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form1%

F04DNon-positive-displacement pumps1%

PatentTitleYear

12,577,881Turbine shroud assemblies with anti-migration seals2026 12,503,962—2025 12,421,870Pin mounted ceramic matrix composite heat shields with impingement cooling2025 12,416,241Turbine shroud assemblies with strip seals2025 12,410,725Turbine shroud assemblies with air activated pistons for biasing buffer cavity seals2025 12,352,176Turbine shroud assemblies with channels for buffer cavity seal thermal management2025 12,305,525Turbine shroud assemblies with rod seal and strip seals2025 12,286,885Turbine assembly with confronting vane and turbine shroud segment2025 12,286,906Locating plate for use with turbine shroud assemblies2025 12,258,880Turbine shroud assemblies with inter-segment strip seal2025 12,241,374Ceramic matrix composite endwall sealing around vane airfoil of gas turbine engine2025 12,241,376Locating plate for use with turbine shroud assemblies2025 12,228,044Turbine shroud system with ceramic matrix composite segments and dual inter-segment seals2025 12,215,593Turbine shroud assembly with inter-segment damping2025 12,203,376Turbine shroud assembly with pinned shroud attachment2025 12,188,365Method and apparatus for ceramic matrix composite turbine shroud assembly2025 12,158,072Turbine shroud segments with damping strip seals2024 12,152,499Turbine shroud segments with strip seal assemblies having dampened ends2024 12,110,802Full hoop ceramic matrix composite vane endwall integration with turbine shroud ring and mounting thereof2024 12,077,479Recession resistant intermediate layer for CMC vane2024 11,885,225Turbine blade track with ceramic matrix composite segments having attachment flange draft angles2024 11,761,351Turbine shroud assembly with radially located ceramic matrix composite shroud segments2023 11,725,535Vane assembly for a gas turbine engine2023 11,702,949Turbine shroud assembly with forward and aft pin shroud attachment2023 11,629,607Turbine shroud assembly with radially and axially biased ceramic matrix composite shroud segments2023 11,499,444Turbine shroud assembly with forward and aft pin shroud attachment2022 11,441,441Turbine shroud with split pin mounted ceramic matrix composite blade track2022 11,346,251Turbine shroud assembly with radially biased ceramic matrix composite shroud segments2022 11,346,237Turbine shroud assembly with axially biased ceramic matrix composite shroud segment2022 11,319,828Turbine shroud assembly with separable pin attachment2022 11,286,798Airfoil assembly with ceramic matrix composite parts and load-transfer features2022 11,286,812Turbine shroud assembly with axially biased pin and shroud segment2022 11,274,567Keystoned blade track2022 11,220,930Assembly with pin-mounted ceramic matrix composite material components2022 11,215,075Turbine shroud assembly with flange mounted ceramic matrix composite turbine shroud ring2022 11,215,065Turbine shroud assembly with ceramic matrix composite components having stress-reduced pin attachment2022 11,187,098Turbine shroud assembly with hangers for ceramic matrix composite material seal segments2021 11,174,743Turbine shroud assembly with multi-piece support for ceramic matrix composite material seal segments2021 11,149,560Airfoil assembly with ceramic matrix composite parts and load-transfer features2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2026Patents assigned to ROLLS ROYCE CORP (39)· patent assignee history

2021–2023Patents assigned to ROLLS ROYCE NAM TECH INC (7)· patent assignee history

2021–2025Patents assigned to ROLLS ROYCE PLC (5)· patent assignee history

2021–2025Patents assigned to ROLLS ROYCE HIGH TEMPERATURE COMPOSITES INC (3)· patent assignee history

2021–2026Based in US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ROLLS ROYCE CORP	39	2021–2026
ROLLS ROYCE NAM TECH INC	7	2021–2023
ROLLS ROYCE PLC	5	2021–2025
ROLLS ROYCE HIGH TEMPERATURE COMPOSITES INC	3	2021–2025

Locations

Location	Patents	Span
US	39	2021–2026