Company patents

MAHLE International GmbH

Mahle International GmbH's patent strategy reveals a strong, sustained focus on Vehicle Heating / Cooling, which constitutes 17.4% of its portfolio and saw a significant 74.1% growth in 2025. Surprisingly, despite its automotive roots, the company has shown an emerging focus on Electric Vehicle Propulsion, with a 40.0% growth in 2025, and a highly volatile but significant investment in Batteries & Fuel Cells, which surged by 263.6% in 2025 before a sharp decline so far in 2026, indicating a dynamic shift towards electrification technologies.

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.

712 US filings (since 2023) · 12 categories · 41 themes

Advanced Heat Exchanger Architectures

Novel designs and configurations for heat exchangers that improve heat transfer efficiency, compactness, or enable specific phase change or separation processes within refrigeration and heat pump cycles.

Heat Exchange ComponentsHeat Exchangers (Specific Types)Refrigeration
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147since 2023
-22.6%YoY
Vehicle Heat Pump Systems

Utilization of heat pump cycles, often with natural refrigerants, for efficient heating and cooling of the vehicle cabin and/or thermal conditioning of high-voltage components like battery modules.

Vehicle Heating / Cooling
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128since 2023
+13.5%YoY
Internal Flow Path Optimizationfiltered

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.

Heat Exchange ComponentsHeat Exchangers (Specific Types)
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88since 2023
+39.1%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.

Vehicle Heating / CoolingBatteries & Fuel CellsElectric Vehicle Propulsion
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85since 2023
+106.2%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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68since 2023
+4.3%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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57since 2023
-13.0%YoY
EV Charging Systems & Control

Technologies for efficiently delivering power to electric vehicles, encompassing fast charging, wireless charging, and smart grid integration, alongside vehicle-side control and management of the charging process.

Electric Vehicle PropulsionPower Distribution & Storage
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52since 2023
+50.0%YoY
Wireless Power Transfer Systems

Systems and methods for transferring electrical energy without physical contact, often utilizing inductive or resonant coupling, including antenna design, resonance tracking, and control mechanisms for efficient power delivery.

Power Distribution & Storage
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49since 2023
+54.5%YoY
Refrigeration Cycle Components

Specific heat exchanger designs and auxiliary components tailored for integration into refrigeration, air conditioning, or heat pump systems, often involving gas-liquid separation or rotary mechanisms.

Heat Exchangers (Specific Types)
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45since 2023
-22.2%YoY
Enhanced Surface Fin Geometries

Design and optimization of fin structures, baffles, and surface textures within heat exchangers to increase heat transfer area, promote turbulence, or manage fluid flow for improved thermal performance.

Heat Exchange Components
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39since 2023
0.0%YoY
Compressor Efficiency Control

Techniques and mechanisms to optimize the performance, energy consumption, and operational range of compressors in refrigeration and heat pump systems, often involving variable control of compression parameters like volume ratio or speed.

Refrigeration
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36since 2023
-21.4%YoY
Smart Cabin Climate Control

Advanced systems for maintaining passenger comfort and air quality within the vehicle cabin, including features like condensation prevention, remote control, after-blow functions, and air purification.

Vehicle Heating / Cooling
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35since 2023
+1800.0%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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32since 2023
+50.0%YoY
Refrigerant Circuit Optimization

Design and control strategies for improving the efficiency, stability, and operational flexibility of refrigerant circuits, including component integration, flow management, phase separation, and pressure regulation.

Refrigeration
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31since 2023
-35.7%YoY
Specialized Fluid Handling Applications

Pumps and blowers specifically adapted or designed for unique fluid types, challenging environments, or particular industrial, medical, or consumer applications, often involving debris, specific gas mixtures, or precise delivery requirements.

Pumps (Centrifugal)
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30since 2023
+66.7%YoY
HVAC Component Design & Diagnostics

Engineering and diagnostic aspects of individual heating, ventilation, and air conditioning components, such as PTC heaters, air ducts, flow control valves, and compressor monitoring.

Vehicle Heating / Cooling
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27since 2023
+750.0%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.

Pumps (Centrifugal)
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25since 2023
-53.3%YoY
Two-Phase Cooling Devices

Heat transfer devices that utilize the phase change of a working fluid (evaporation and condensation) to efficiently move heat, often incorporating capillary structures, heat pipes, or vapor chambers.

Heat Exchangers (Specific Types)Heat Exchange Components
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24since 2023
0.0%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.

Pumps (Centrifugal)
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23since 2023
+80.0%YoY
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.

Batteries & Fuel CellsElectric Vehicle Propulsion
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21since 2023
+1300.0%YoY
High-Density Magnetic Component Integration

Techniques for designing and manufacturing compact, multi-functional magnetic components, such as inductors, transformers, and coils, often involving embedded structures, multilayer designs, or shared magnetic circuits to achieve higher power density or smaller form factors.

Magnets & Inductors
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19since 2023
-37.5%YoY
Advanced Impeller & Flow Path Design

Focuses on optimizing the geometry, structure, and internal flow channels of impellers, blades, and housings to improve fluid dynamics, efficiency, or specific performance characteristics of centrifugal pumps and fans.

Pumps (Centrifugal)
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17since 2023
+66.7%YoY
Industrial & Bioprocess Filtration

Membrane and depth filtration for industrial separation, gas purification, and bioprocess clarification including cross-flow, dead-end, tangential flow filtration, and oil/water separation.

Separation Processes (Filtration, Distillation)
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15since 2023
-25.0%YoY
Battery Management Systems

Software, algorithms, and associated hardware for monitoring, controlling, and optimizing battery performance, safety, and lifespan, including charge/discharge cycles, thermal regulation, and system integration.

Batteries & Fuel CellsPower Distribution & Storage
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9since 2023
+300.0%YoY
Pump & Fan Operational Control & Diagnostics

Systems and methods for monitoring, regulating, and diagnosing the performance and health of pumps and fans, including speed control, flow rate management, abnormality detection, and safety mechanisms like overspeed safeguards.

Pumps (Centrifugal)
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9since 2023
new
Transport Refrigeration Units

Specialized refrigeration systems for temperature-sensitive cargo in vehicles or containers, focusing on power management, energy storage (e.g., swappable batteries), and environmental sensing for cargo preservation.

Vehicle Heating / Cooling
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9since 2023
-33.3%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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8since 2023
+50.0%YoY
Magnetic Actuation and Field Control Systems

Systems and devices that utilize controlled magnetic fields, often generated by electromagnets, to produce mechanical motion, precise positioning, or manipulate physical phenomena like plasma distribution.

Magnets & Inductors
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7since 2023
-33.3%YoY
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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7since 2023
0.0%YoY
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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6since 2023
-66.7%YoY
Gas Stream Purification

Technologies and systems for removing unwanted components or separating desired gases from a mixed gas stream, including adsorption, absorption, and membrane-based methods.

Separation Processes (Filtration, Distillation)
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5since 2023
+100.0%YoY
Battery Material Recovery

Processes and apparatus for disassembling spent batteries and recovering valuable materials (e.g., metals, electrolytes, plastics) through mechanical, chemical, or electrochemical methods for reuse or sustainable disposal.

Batteries & Fuel Cells
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4since 2023
new
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 Distribution & Storage
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4since 2023
-50.0%YoY
Alternative Refrigeration Technologies

Non-traditional refrigeration and heat pump systems that utilize principles other than vapor compression, such as magnetocaloric effects, thermoelectric effects, absorption cycles, or thermochemical reactions.

Refrigeration
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3since 2023
+100.0%YoY
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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3since 2023
0.0%YoY
Solid-State Battery Manufacturing

Process and equipment for producing solid-state battery cells, including solid electrolyte synthesis (sulfide/oxide/polymer), thin-film deposition, lamination, sintering, dry-electrode fabrication, and stacking under controlled atmosphere.

Batteries & Fuel Cells
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2since 2023
new
Advanced Adsorbent & Separation Media

Development of materials with tailored porosity, surface chemistry, or structure, such as metal-organic frameworks (MOFs), zeolites, or superficially porous particles, for selective adsorption, ion exchange, or chromatographic separations.

Separation Processes (Filtration, Distillation)
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2since 2023
0.0%YoY
Water Contaminant Remediation

Systems and methods specifically engineered for removing pollutants and impurities from water sources, ranging from groundwater decontamination to point-of-use filtration, often employing adsorption, membrane, or distillation techniques.

Separation Processes (Filtration, Distillation)
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2since 2023
new
Battery Electrode Coating & Slurry

Slurry compositions and coating processes for battery electrodes, including binder/active-material slurries, surface coating layers, and electrode-to-foil adhesion for cathode and anode.

Batteries & Fuel Cells
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2since 2023
n/a
Thermal Energy Storage

Systems and components designed to store thermal energy, often using sensible, latent (phase change material), or thermochemical reactions, for later release and utilization in various applications.

Heat Exchangers (Specific Types)
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1since 2023
n/a
Industrial Solid-Liquid Separation

Equipment and processes for separating solid particles from liquid or gas phases in industrial settings, encompassing mechanical screening, filtration of molten materials, and various filter media designs.

Separation Processes (Filtration, Distillation)
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1since 2023
n/a

Patents

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