Company patents

MITSUBISHI HEAVY INDUSTRIES, LTD.

MITSUBISHI HEAVY INDUSTRIES, LTD. demonstrates a surprising shift in its patent strategy, with a significant emerging focus on "Separation Processes (Filtration, Distillation)" which saw a remarkable 38.1% year-over-year growth in 2025, alongside "Catalysts & Reactors" which experienced an impressive 116.7% growth in 2024, indicating a strategic pivot towards advanced materials and chemical processing, despite the overall decline in its core "Steam / Gas Turbines" (down 30.1% in 2025) and "Gas Turbine Plants" (down 13.9% in 2025) categories.

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.

1,346 US filings (since 2023) · 12 categories · 46 themes

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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262since 2023
-40.2%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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153since 2023
-27.1%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.

Steam / Gas TurbinesGas Turbine Plants
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147since 2023
-12.8%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 Turbines
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127since 2023
+7.1%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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121since 2023
-32.6%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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107since 2023
+5.3%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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66since 2023
+4.8%YoY
Fiber Composite Layup & Curing

Methods and tooling for forming structural components from fibrous materials impregnated with resin, involving processes like prepreg handling, resin infusion, and co-bonding during curing.

Plastics Shaping & Molding
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64since 2023
+6.2%YoY
Multi-material Product Integration & Finishing

Techniques for combining multiple materials or layers, often with specialized surface treatments, coatings, or assembly methods, to create functional or aesthetically enhanced plastic articles, including consumer goods and encapsulated electronics.

Plastics Shaping & Molding
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59since 2023
-11.1%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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57since 2023
-15.8%YoY
Carbon Dioxide Capture & Conversion

Technologies and materials for capturing carbon dioxide from gas streams and subsequently converting it into valuable chemical products or materials, rather than simply storing it.

Catalysts & Reactors
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49since 2023
+38.5%YoY
Metal Additive Manufacturing Processes

Techniques for building three-dimensional metal objects layer-by-layer using metal powders, including powder bed fusion, binder jetting, and directed energy deposition. This theme encompasses process mechanics, equipment design, and operational control for AM systems.

Plastics Shaping & Molding
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32since 2023
-33.3%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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32since 2023
-44.4%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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28since 2023
+20.0%YoY
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 & Aerodynamics
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28since 2023
+22.2%YoY
Automated Visual Inspection

Systems that employ imaging and image processing to automatically detect defects, verify states, or ensure quality control in manufactured goods, printed materials, or industrial processes.

Material & Chemical Analysis
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26since 2023
+66.7%YoY
Welding Process Control

Systems and methods for precisely controlling welding parameters such as power, speed, oscillation, and material feed to optimize weld quality, consistency, and efficiency, often involving automated or semi-automated processes.

Welding & Soldering
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21since 2023
-33.3%YoY
Predictive Maintenance & Anomaly Detection

Utilizing sensor data, historical performance, and analytical models to anticipate equipment failures, diagnose faults, and estimate remaining useful life, thereby enabling proactive maintenance and reducing downtime.

Industrial Control Systems
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21since 2023
-44.4%YoY
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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19since 2023
+16.7%YoY
AM Process Monitoring & Control

Systems and methods for real-time sensing, modeling, and closed-loop control of additive manufacturing parameters to ensure part quality, consistency, and process efficiency. This includes thermal management, atmospheric regulation, and precise material deposition.

Industrial Control Systems
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19since 2023
-66.7%YoY
Laser Material Processing

Techniques and systems utilizing laser beams for precise material modification, including cutting, cladding, ablation, and surface treatment, often for joining, shaping, or removing material.

Welding & Soldering
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18since 2023
-62.5%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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15since 2023
-16.7%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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14since 2023
+100.0%YoY
Thermoplastic Compression Molding

Processes involving the application of heat and pressure to shape thermoplastic or elastomeric materials, often using molds or presses, to achieve specific forms or material properties.

Plastics Shaping & Molding
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10since 2023
0.0%YoY
Water & Wastewater Membrane Treatment

Membrane-based separation for water purification, contaminant removal, desalination, and wastewater treatment, including reverse osmosis, ultrafiltration, and forward osmosis modules.

Separation Processes (Filtration, Distillation)
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9since 2023
+33.3%YoY
Remote & Wireless Industrial Control

Systems and methods enabling the monitoring, configuration, and operation of industrial equipment and processes from a distance, often utilizing wireless communication protocols and networked platforms for enhanced flexibility and access.

Industrial Control Systems
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9since 2023
-40.0%YoY
Reactor System Design & Optimization

Engineering approaches to improve the efficiency, control, and performance of chemical reactors, encompassing continuous processes, heat exchange integration, and specialized reactor configurations for various chemical transformations.

Catalysts & Reactors
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9since 2023
-50.0%YoY
Advanced Magnetic Powder Materials

Development and processing of metal powders with specific magnetic properties, including soft magnetic alloys, permanent magnet materials, and insulated powders for electronic components, often involving precise control of particle size, morphology, and composition.

Electric Motors & Generators
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9since 2023
n/a
Welding & Soldering Tool Design

Design and features of welding and soldering tools, fixtures, and accessories that enhance user safety, ergonomics, operational efficiency, and precise workpiece manipulation, including protective equipment and clamping mechanisms.

Welding & Soldering
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8since 2023
-25.0%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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7since 2023
-33.3%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 Cells
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6since 2023
+50.0%YoY
Weld Quality Monitoring & NDT

Systems and methods for assessing the quality and characteristics of welds or solder joints, often involving non-destructive testing (NDT) techniques, image processing, or real-time feedback for process control and defect detection.

Welding & Soldering
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6since 2023
+50.0%YoY
Emerging Contaminant Removalfiltered

Specific techniques and materials developed to remove persistent or difficult-to-treat pollutants from water, such as per- and polyfluoroalkyl substances (PFAS), micropollutants, or specific industrial chemicals.

Catalysts & Reactors
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6since 2023
-33.3%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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5since 2023
n/a
Novel Catalyst Materials

Development and synthesis of catalysts with unique compositions or structures, such as medium entropy alloys, metal foam-supported catalysts, layered catalytic articles, or high-entropy oxides, to enhance activity, selectivity, or stability in chemical reactions.

Catalysts & Reactors
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4since 2023
new
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.

Batteries & Fuel Cells
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4since 2023
0.0%YoY
Multi-Agent System Coordination

Methods and systems for managing the interaction, communication, and collaborative tasks among multiple autonomous entities, or between autonomous entities and a central control system or users.

Industrial & Autonomous Control
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4since 2023
n/a
Sensor-based Environment Perception

Techniques and hardware for autonomous systems to gather and interpret data about their surroundings, including obstacle detection, object recognition, and depth estimation, to inform control decisions.

Industrial & Autonomous Control
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3since 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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3since 2023
n/a
Plastic Extrusion Processes

Methods and equipment for continuously shaping plastic materials by forcing them through a die, often involving screw extruders, heating elements, and downstream calibration.

Plastics Shaping & Molding
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2since 2023
0.0%YoY
Autonomous Path Planning

Algorithms and systems for generating, optimizing, and executing trajectories for autonomous vehicles or robots to move through an environment, often involving obstacle avoidance, route validation, and goal reaching.

Industrial & Autonomous Control
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2since 2023
0.0%YoY
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)Catalysts & Reactors
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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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2since 2023
n/a
Lithium Battery Anode Materials

Active anode materials and manufacturing techniques for rechargeable lithium-ion batteries, including silicon-carbon composites, graphite, lithium-metal anodes, and electrode coating processes that improve capacity, cycle life, and rate capability.

Batteries & Fuel Cells
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1since 2023
new
Electronic Component Bonding

Specialized welding or bonding techniques and apparatuses tailored for joining small-scale electronic components, integrated circuits, or semiconductor wafers, emphasizing precision, miniaturization, and electrical connectivity.

Welding & Soldering
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1since 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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1since 2023
n/a

Patents

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