Company patents

ROLLS-ROYCE DEUTSCHLAND LTD & CO KG

ROLLS-ROYCE DEUTSCHLAND LTD & CO KG's patent strategy shows a surprising, albeit short-lived, surge in Electric Motors & Generators, which saw a 100.0% year-over-year growth in 2024, indicating a brief emerging focus outside its core aerospace categories. However, the company appears to be shifting priorities across its entire portfolio, with significant year-over-year declines in 2025 and so far in 2026 across nearly all categories, including its top three: Aircraft Equipment (-52.9% in 2025), Gas Turbine Plants (-57.7% in 2025), and Steam / Gas Turbines (-69.6% in 2025).

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

318 US filings (since 2023) · 12 categories · 37 themes

Electric Propulsion Systems

Integration of electric motors, power generation, and distribution systems for propelling aircraft, including components for coupling motors to propellers and managing electrical power.

Aircraft EquipmentAircraft & Aerodynamics
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70since 2023
-61.8%YoY
Auxiliary Systems & Maintenance

Support systems for gas turbine engines, including specialized pumps, cleaning methods for engine components, mobile power generation units, and specific structural components like joints and fasteners.

Gas Turbine Plants
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52since 2023
-68.4%YoY
Hybrid Electric Propulsion Integration

Integration of electric machines, energy storage, and power transfer systems with gas turbine engines to enable hybrid operation, electric starting, or auxiliary power generation, improving efficiency or operational flexibility.

Gas Turbine PlantsSteam / Gas TurbinesGearing & Transmissions
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51since 2023
-75.9%YoY
Flexible Fuel Combustors

Combustor and fuel supply system designs that enable operation with multiple fuel types (e.g., conventional, ammonia, hydrogen) or optimize fuel-air mixing for improved efficiency, reduced emissions, or specific power cycles.

Gas Turbine Plants
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40since 2023
+54.5%YoY
Turbine Condition Monitoring & Diagnostics

Systems and methods for real-time or periodic assessment of turbine engine health, including detection of wear, damage, unbalance, or deterioration, to enable predictive maintenance and extend operational life.

Steam / Gas Turbines
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36since 2023
-72.2%YoY
High-Ratio Gearbox Designs

Designs for gear systems, particularly epicyclic configurations, to achieve high gear ratios for efficient power transfer between engine shafts and components like fans, often integrating with electric machines.

Gas Turbine Plants
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36since 2023
-93.8%YoY
Advanced Power Converter Topologies

Focuses on novel circuit configurations for DC-DC, DC-AC, or AC-DC conversion, often involving resonant operation, multi-level structures, or switched capacitors to improve efficiency, power density, or voltage conversion ratios.

Power Conversion (DC/AC, DC/DC)
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30since 2023
-12.5%YoY
Power Electronics Integration

Design and assembly of power conversion, distribution, and protection modules, focusing on compact form factors, efficient electrical connections, and robust protective measures for electronic systems, often in high-power applications.

Printed Circuits & Electronic Assemblies
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29since 2023
-25.0%YoY
Electric Powertrain Efficiency & Control

Methods and components for optimizing the performance, efficiency, and control of electric motors, inverters, and power converters within electric vehicle and hybrid vehicle drivetrains.

Electric Vehicle Propulsion
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29since 2023
-77.8%YoY
Advanced Materials & Manufacturing

Focuses on the development and application of novel materials, coatings, and manufacturing processes to improve the performance, durability, and cost-effectiveness of turbine engine components.

Steam / Gas Turbines
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27since 2023
-80.0%YoY
Internal Flow Path Optimization

Techniques and structures within heat exchangers designed to enhance heat transfer efficiency by controlling and optimizing fluid flow, including baffle arrangements, jet impingement, and condensate management.

Gas Turbine PlantsSteam / Gas Turbines
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26since 2023
-50.0%YoY
Advanced Aircraft Actuation

Design and control of electromechanical or hydraulic actuators for moving aircraft components like wing tips, control surfaces, or landing gear, often focusing on efficiency, redundancy, or specific operational profiles.

Aircraft & Aerodynamics
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23since 2023
-61.5%YoY
Advanced Motor Topologies

Development of novel motor architectures beyond traditional radial flux designs, including linear, axial, or multi-armature configurations, often to optimize for specific performance characteristics like torque density or form factor.

Electric Motors & Generators
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22since 2023
-60.0%YoY
Advanced Gear & Drivetrain Designs

Novel configurations and materials for gears and drivetrain components, including specialized profiles, self-aligning features, damping elements, and complex gear train arrangements like planetary, cycloidal, or strain wave gearing.

Gearing & Transmissions
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21since 2023
n/a
Advanced Electronic Packaging

Methods and structures for integrating and enclosing electronic components into compact, multi-functional modules, often involving embedded components, multi-layer substrates, and electromagnetic shielding for performance and miniaturization.

Printed Circuits & Electronic Assemblies
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19since 2023
-66.7%YoY
Stator & Coil Manufacturing

Manufacturing processes and techniques for producing stator cores, windings, and coils, including lamination, impregnation, hairpin winding, and segment coil bending, to improve motor efficiency, power density, or reliability.

Electric Motors & Generators
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19since 2023
-91.7%YoY
Flexible and Printed Circuitry

Manufacturing processes and material compositions for creating electronic circuits on flexible or conformable substrates, enabling novel form factors, enhanced durability, and new applications beyond rigid PCBs.

Printed Circuits & Electronic Assemblies
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14since 2023
-71.4%YoY
Integrated Actuation and Drive Systems

Methods and components for converting power into mechanical motion to drive pump mechanisms, encompassing electric motors, hydraulic actuators, and specialized motion converters like ball screws or solenoids.

Gearing & Transmissions
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13since 2023
-66.7%YoY
Power Systems with Energy Storage & Grid Interaction

Integration of power converters with energy storage devices (batteries, supercapacitors) or grid interfaces, often involving AC/DC conversion, power flow management, and fault handling for hybrid power systems or specific applications like EVs or PV.

Power Conversion (DC/AC, DC/DC)
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10since 2023
+50.0%YoY
Hybrid/Electric Drive Unit Design

Addresses the design and arrangement of electric motors, transmissions, and associated power electronics (like inverters) to form integrated drive units for hybrid or electric vehicles, including specific components like busbars and electric brakes.

Gearing & Transmissions
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10since 2023
-50.0%YoY
Motor System Fault Detection

Methods and systems for identifying anomalies, failures, or impending issues within electric motors or their associated drive and power management circuits, often by monitoring electrical or operational parameters.

Motor Control
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10since 2023
-60.0%YoY
Inverter and Drive Circuit Control

Methods and circuits for controlling the power electronic converters (inverters, bridges) that supply current and voltage to electric motors, including switching strategies, voltage command generation, and multi-phase configurations.

Motor Control
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9since 2023
+100.0%YoY
Advanced Sealing and Valve Design

Innovations in the design, materials, and maintenance of seals, valves, and related components to improve durability, reduce leakage, and enable specific pump functions like high-pressure operation or automated seal replacement.

Steam / Gas Turbines
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8since 2023
new
Aircraft Sensor & Diagnostic Systems

Technologies for detecting operational parameters, monitoring component health, and diagnosing malfunctions in aircraft using various sensors and data analysis, often employing AI/ML.

Aircraft Equipment
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7since 2023
+200.0%YoY
Package Thermal Management

Integrated solutions for dissipating heat generated by high-density semiconductor devices within the package, including embedded cooling structures, cold plates, and optimized fluidic channels.

Semiconductor Packaging & Encapsulation
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7since 2023
0.0%YoY
Transmission Lubrication Systems

Designs and components for efficiently supplying, collecting, and managing lubricants (oil, grease) within gearboxes and transmissions to reduce friction, dissipate heat, and extend component operational life.

Gearing & Transmissions
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7since 2023
-50.0%YoY
Aircraft Fluid & Gas Control

Systems designed to regulate the flow, pressure, and distribution of non-fuel gases and fluids within aircraft, such as cabin air, oxygen supply, or pneumatic actuation systems.

Aircraft Equipment
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5since 2023
0.0%YoY
EV Thermal Management Systems

Systems designed to manage the temperature of multiple components in electric or hybrid vehicles, such as batteries, electric motors, power electronics, and the passenger cabin, often using shared or interconnected cooling/heating circuits.

Electric Vehicle Propulsion
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5since 2023
n/a
Hydrogen Aircraft Fuel Systems

Technologies for storing, managing pressure, and safely distributing hydrogen fuel within an aircraft, including tank integration, pressure control, and leak detection.

Aircraft Equipment
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4since 2023
+100.0%YoY
Control & Stability for Power Converters

Techniques and circuits designed to regulate output, manage input variations, mitigate resonance, or ensure stable operation of power converters under diverse load and source conditions. This includes adaptive, predictive, or fault-tolerant control schemes.

Power Conversion (DC/AC, DC/DC)
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4since 2023
+100.0%YoY
Aerodynamic & Structural Optimization

Innovations in aircraft airframe design, material usage, and aerodynamic surfaces to improve performance characteristics such as weight, rigidity, short take-off/landing capabilities, or stall resistance.

Aircraft & Aerodynamics
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4since 2023
n/a
Battery Pack Mechanical Design

Focuses on the structural integrity, housing, mounting, and physical integration of battery cells into robust and protected packs within electric vehicles, including manufacturing considerations.

Electric Vehicle Propulsion
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3since 2023
n/a
Sensorless Motor Control

Techniques for determining the rotor position, speed, or other operational parameters of an electric motor without dedicated physical sensors, often relying on back-EMF, current, or voltage measurements.

Motor Control
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2since 2023
n/a
Motor System Integration & Safety

Integration of electric motors into larger systems (e.g., vehicles, power tools) and safety features for high-voltage components, including control interfaces, mechanical integration, and environmental protection (e.g., waterproofing).

Electric Motors & Generators
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1since 2023
n/a
Device Enclosure & Material Engineering

Methods and materials used to construct robust and protective enclosures for electronic devices, focusing on structural integrity, impact resistance, thermal dissipation, and specialized material properties for enhanced durability.

Printed Circuits & Electronic Assemblies
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1since 2023
n/a
Redundant Flight Control Architectures

Systems and methods for ensuring robust and reliable aircraft control, often involving multiple control computers, adaptive control laws, or sophisticated pilot input interfaces, especially in the presence of failures or environmental disturbances.

Aircraft & Aerodynamics
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1since 2023
n/a
Motor Power and Energy Management

Strategies and circuits for optimizing the supply and consumption of electrical power for motors, including current limiting, regenerative energy handling, battery integration, and managing power quality.

Motor Control
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1since 2023
n/a

Patents

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