Company patents

RAYTHEON TECHNOLOGIES CORPORATION

RAYTHEON TECHNOLOGIES CORPORATION's patent strategy reveals a surprising, widespread decline across its core technology areas, with significant year-over-year drops in 2024 and 2025. For instance, its dominant 'Steam / Gas Turbines' category, representing 43.4% of its portfolio, saw a -73.2% decline in 2024 and a further -86.4% in 2025, while 'Gas Turbine Plants' (36.3% of portfolio) experienced a -64.7% drop in 2024 and -87.7% in 2025, indicating a broad shift away from new patenting activity in these historically strong aerospace sectors.

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.

1,155 US filings (since 2023) · 12 categories · 39 themes

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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383since 2023
-85.9%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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315since 2023
-86.3%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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235since 2023
-89.6%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 TurbinesHeat Exchange ComponentsHeat Exchangers (Specific Types)
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234since 2023
-83.3%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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234since 2023
-95.0%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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139since 2023
-81.2%YoY
Ceramic Matrix Composite Manufacturing

Methods and processes for fabricating ceramic matrix composites (CMCs), including preform creation, infiltration techniques, and densification to form complex shapes with enhanced properties.

Cement & Ceramics
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129since 2023
-89.1%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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102since 2023
-80.0%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 TurbinesPumps (Centrifugal)
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98since 2023
-84.2%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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96since 2023
-88.6%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 Equipment
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66since 2023
-96.0%YoY
High-Temperature Ceramic Coatings

Protective layers applied to ceramic or composite substrates to enhance resistance against extreme temperatures, corrosion, or erosion in harsh operating environments.

Cement & Ceramics
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53since 2023
n/a
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)
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40since 2023
-82.4%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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33since 2023
-85.7%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.

Additive Manufacturing (3D Printing)Powder MetallurgyPlastics Shaping & Molding
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31since 2023
-92.3%YoY
Wear & Corrosion Resistant Coatings

Application of protective layers to improve the durability and longevity of components by enhancing resistance to wear, oxidation, or chemical degradation in demanding operational environments.

Coating & Surface Treatment
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29since 2023
-87.5%YoY
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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23since 2023
-71.4%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.

Additive Manufacturing (3D Printing)Powder Metallurgy
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22since 2023
-90.9%YoY
In-situ Coating Process Diagnostics

Methods and systems for real-time monitoring and control of coating processes or chamber cleaning, utilizing sensor data (e.g., thermal, pressure, optical) and predictive models to ensure quality and optimize efficiency.

Coating & Surface Treatment
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19since 2023
-66.7%YoY
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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17since 2023
n/a
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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16since 2023
-66.7%YoY
AM Part Design & Topology Optimization

Computational methods and design principles for generating optimized geometries, internal structures (e.g., lattices, minimal surfaces), or functional features that are specifically enabled or enhanced by the capabilities of additive manufacturing.

Additive Manufacturing (3D Printing)
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16since 2023
n/a
Advanced Functional Ceramics

Ceramic materials and components engineered for specific functional applications, such as electronics, energy storage, wear resistance, or high-temperature heating elements.

Cement & Ceramics
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14since 2023
-75.0%YoY
Advanced Deposition Chamber Hardware

Design and engineering of specialized components within deposition systems, such as heaters, targets, susceptors, and chamber walls, to achieve precise control over process parameters like temperature, material flux, and plasma characteristics.

Coating & Surface Treatment
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13since 2023
-83.3%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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13since 2023
-87.5%YoY
Hybrid Additive-Subtractive Manufacturing

Integration of additive manufacturing with subtractive manufacturing (e.g., machining, cutting) or other traditional processes within a single system or workflow to create parts with improved features, surface finish, or material properties, or to enable new manufacturing paradigms.

Additive Manufacturing (3D Printing)
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13since 2023
n/a
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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12since 2023
n/a
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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11since 2023
-75.0%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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10since 2023
n/a
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
n/a
Welding Process Controlfiltered

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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9since 2023
n/a
Conformal & Selective Film Deposition

Methods for depositing thin films with controlled conformality, thickness, and material properties, including selective deposition on specific areas, often using atomic layer deposition (ALD), chemical vapor deposition (CVD), or epitaxial growth.

Coating & Surface Treatment
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7since 2023
n/a
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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4since 2023
new
Additive Manufacturing of Cementitious Materials

Methods for layer-by-layer deposition or 3D printing of concrete and cement-based materials, often employing rapidly hydrating binders or specialized compositions for rapid setting.

Cement & Ceramics
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4since 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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4since 2023
n/a
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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3since 2023
n/a
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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2since 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
n/a
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.

Powder Metallurgy
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1since 2023
n/a

Patents

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Welding Process Control
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