Company patents

AKTIEBOLAGET SKF

AKTIEBOLAGET SKF, while maintaining a strong core in Bearings & Shafts (62.9% of portfolio), shows a surprising and rapid emerging focus on Electric Motors & Generators, which experienced significant growth of +86.7% in 2025. This indicates a strategic shift towards integrating electrical power technologies, despite a general decline in patenting activity across many categories so far in 2026, including a -46.5% drop in Bearings & Shafts and a -40.0% drop in Machine Testing compared to 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.

986 US filings (since 2023) · 12 categories · 39 themes

Integrated Bearing Assemblies

Design and integration of bearings within larger mechanical systems or devices, focusing on mounting structures, housing, endplay management, and overall assembly for specific applications.

Bearings & Shafts
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559since 2023
-8.4%YoY
Rolling Element Bearing Optimization

Improvements to the internal components and configurations of rolling element bearings, such as cage designs, separator materials, raceway geometry, or adjustable elements, to enhance performance or lifespan.

Bearings & Shafts
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487since 2023
+3.6%YoY
Bearing Sealing & Protection

Components and designs focused on preventing ingress of contaminants (e.g., dirt, water) or egress of lubricants from bearing systems, often using elastic seals, shields, or labyrinth structures.

Bearings & Shafts
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336since 2023
+4.3%YoY
Fluid & Air Bearing Systems

Bearings that utilize a pressurized gas or liquid film to create a non-contact support surface, reducing friction and wear, often incorporating specific flow restriction or airfoil designs.

Bearings & Shafts
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144since 2023
-11.1%YoY
Advanced Bearing Materials

Development of novel materials or material compositions to enhance bearing performance, such as wear resistance, friction reduction, or load capacity, often involving composites, ceramics, or specialized coatings.

Bearings & Shafts
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132since 2023
-13.6%YoY
Mechanical Power Transmission Joints

Assemblies and components designed for reliable and efficient transfer of rotational or axial forces between mechanical parts, accommodating misalignment or specific motion profiles.

Couplings & Brakes (Mechanical)
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67since 2023
+11.8%YoY
Acoustic and Vibration Diagnostics

Utilizing sound and vibration analysis to detect malfunctions, assess balance, or monitor the operational health of machinery and structures. This often involves sensors, signal processing, and pattern recognition.

Machine Testing
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32since 2023
-68.8%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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26since 2023
-37.5%YoY
Hinge & Articulation Mechanisms

Mechanical assemblies designed to enable controlled rotational movement between components, often incorporating locking features, speed reduction, or eccentric adjustments for precise positioning.

Bearings & Shafts
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23since 2023
-16.7%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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21since 2023
-14.3%YoY
Embedded & Structural Temperature Sensing

Methods and devices for integrating temperature sensors directly into materials, structures, or challenging environments (e.g., hydrogen tanks, concrete, ocean) to measure internal or localized temperatures.

Temperature Measurement
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13since 2023
-80.0%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.

Gearing & Transmissions
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11since 2023
0.0%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.

Machine TestingMaterial & Chemical Analysis
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10since 2023
-50.0%YoY
Optical Fiber Strain/Pressure Sensing

Utilizes optical fibers, often incorporating Fiber Bragg Gratings (FBG), to detect changes in strain, pressure, or temperature based on modifications to light signals (e.g., wavelength shifts, phase changes) transmitted through the fiber.

Force / Pressure Measurement
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10since 2023
0.0%YoY
Magnetic Position Sensing

Methods and devices that determine the position, angle, or distance of an object by detecting changes in magnetic fields or inductive coupling.

Measurement (Non-specific)
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10since 2023
-66.7%YoY
Torque and Tension Measurement Systemsfiltered

Devices and methodologies for precisely measuring rotational force (torque) or linear pulling force (tension) within mechanical systems, frequently incorporating compensation for environmental variables like temperature.

Force / Pressure Measurement
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9since 2023
0.0%YoY
Capacitive Sensing & Compensation

Design and implementation of capacitive sensors, including methods for improving accuracy, reducing power consumption, compensating for environmental variations (like temperature), and analyzing complex displacement interactions.

Measurement (Non-specific)
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8since 2023
-66.7%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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7since 2023
0.0%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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7since 2023
-50.0%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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6since 2023
-50.0%YoY
IoT & Wireless Temperature Monitoring

Systems that integrate temperature sensors with wireless communication modules and network platforms (e.g., cloud) for remote data collection, analysis, and indication, often for distributed or mobile assets.

Temperature Measurement
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6since 2023
0.0%YoY
Wearable & Biomedical Temperature Sensing

Temperature sensing systems integrated into wearable devices or medical apparatus for monitoring physiological conditions, such as inflammation detection, often utilizing differential temperature measurements.

Temperature Measurement
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6since 2023
new
Optical Component and Fiber Characterization

Techniques and apparatus for measuring and verifying the performance, properties, and structural integrity of optical components like lenses, waveguides, and optical fibers. This includes loss, refractive index, and physical defects.

Machine Testing
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5since 2023
new
Embedded Sensors for Structural Monitoring

The integration of force, strain, or temperature sensors directly into large-scale structures or components (e.g., concrete, pavement, pipelines) to enable real-time health assessment, anomaly detection, and long-term performance monitoring.

Force / Pressure Measurement
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5since 2023
-50.0%YoY
Continuously Variable Transmissions

Transmissions designed to provide a continuous range of gear ratios between fixed limits, often employing ball-planetary, toroidal, or belt-pulley mechanisms, and including their control systems for stable operation in various directions.

Gearing & Transmissions
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4since 2023
0.0%YoY
Advanced Clutch Mechanisms

Novel designs or control strategies for clutches, including one-way, centrifugal, or disconnect types, to manage torque transmission in powertrains and other mechanical systems.

Couplings & Brakes (Mechanical)
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4since 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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4since 2023
0.0%YoY
Electromechanical Braking Systems

Actuators, control, and components for converting electrical energy into braking force, often involving motors, spindles, and friction elements, particularly for vehicle applications.

Couplings & Brakes (Mechanical)
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3since 2023
new
Robust Electrical Contact Systems

Design of contact elements and their interaction to ensure stable, low-resistance electrical connection under various mechanical and environmental conditions, including spring forces and material choices.

Electrical Connectors
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3since 2023
n/a
Optical Fiber Sensing Systems

Systems and methods that utilize optical fibers as sensing elements or for transmitting sensing signals, often for distributed monitoring of environmental conditions, phase changes, or integrating sensing with communication.

Measurement (Non-specific)
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3since 2023
n/a
Leak and Seal Integrity Testing

Methods and systems for detecting fluid or gas leaks, or assessing the quality and continuity of seals in containers, systems, or structures. This often involves pressure changes, electrical properties, or acoustic analysis.

Machine Testing
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2since 2023
+100.0%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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2since 2023
0.0%YoY
Resistive & Piezoresistive Strain Gauges

Sensors that quantify strain or deformation by measuring the change in electrical resistance of a material, such as a semiconductor film or conductive layers, as it undergoes mechanical stress.

Force / Pressure Measurement
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2since 2023
n/a
Vibration Damping in Drivetrains

Integration of elastomeric or other damping elements into mechanical drive components to absorb shocks, reduce noise, and mitigate vibrations during operation.

Couplings & Brakes (Mechanical)
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2since 2023
n/a
Under-Display Optical Sensing

Integration of optical sensors, particularly for biometrics or other surface interactions, beneath a display or protective cover, requiring specialized optical paths, illumination, and packaging.

Measurement (Non-specific)
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1since 2023
new
Semiconductor Thermal Management

Techniques for measuring, monitoring, and compensating for temperature variations within semiconductor devices, integrated circuits, or photonic components to maintain performance, prevent degradation, and ensure reliability across operating conditions.

Temperature Measurement
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1since 2023
new
Sensor Calibration & Compensation

Systems and methods designed to improve the accuracy, reliability, or operational range of sensors and electronic components by measuring temperature and applying corrections or adjustments.

Temperature Measurement
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1since 2023
new
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
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
n/a

Patents

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