Company patents

DELTA ELECTRONICS, INC.

DELTA ELECTRONICS INC. demonstrates a surprising shift in its patent strategy, with a significant emerging focus on Electric Vehicle Propulsion, which saw a remarkable 142.9% year-over-year growth in 2025, despite its relatively small 2.9% share of the total portfolio. This contrasts with a notable decline in core areas like Power Conversion (DC/AC, DC/DC), which, while still its largest category at 25.0% of the portfolio, experienced a 5.6% decline in 2025 and a further 20.0% decline so far in 2026, indicating a potential re-prioritization of R&D efforts.

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.

1,326 US filings (since 2023) · 12 categories · 44 themes

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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253since 2023
-2.7%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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156since 2023
0.0%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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146since 2023
-18.8%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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133since 2023
-7.9%YoY
Power Delivery & Battery Management

Techniques for efficiently supplying power to electronic devices, managing battery charge/discharge cycles, optimizing power consumption, and converting power between different voltage levels or AC/DC for improved energy efficiency and longevity.

Hardware Platform (Cooling, Power, Packaging)
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116since 2023
+86.4%YoY
Modular & Hybrid Power Supply Systems

Design and control of power supply architectures that combine multiple power sources (e.g., AC grid, DC battery, generators) or modular battery units, often featuring switching, conversion, and redundancy for enhanced reliability and flexibility.

Power Distribution & Storage
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89since 2023
+26.1%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 & InductorsPower Conversion (DC/AC, DC/DC)
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89since 2023
-25.0%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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75since 2023
+68.8%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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64since 2023
+4.8%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 Distribution & StoragePower Conversion (DC/AC, DC/DC)
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61since 2023
+66.7%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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57since 2023
+187.5%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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55since 2023
-23.8%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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54since 2023
+20.0%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.

Power Distribution & StorageElectric Vehicle Propulsion
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49since 2023
+76.9%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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48since 2023
+50.0%YoY
Power & Hybrid Connector Design

Connectors specifically designed for high current or voltage applications, often incorporating features for power delivery, thermal management, or combining power and signal lines.

Electrical Connectors
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38since 2023
+8.3%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.

Electrical MeasurementMotor Control
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37since 2023
-58.3%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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36since 2023
+11.1%YoY
Power Consumption & Current Sensing

Devices and methods for accurately measuring or monitoring electrical current draw and power usage in various systems, often for control, optimization, or safety purposes.

Electrical Measurement
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31since 2023
+28.6%YoY
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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28since 2023
-50.0%YoY
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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27since 2023
+66.7%YoY
Cable Termination & Management

Systems and methods for preparing, organizing, and electrically connecting individual conductors or cable bundles to connector terminals, ensuring reliable contact and strain relief.

Electrical Connectors
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26since 2023
+12.5%YoY
Advanced Motor Control Algorithms

Sophisticated software or hardware-implemented control strategies that optimize motor performance, such as precise speed/torque regulation, vibration reduction, or efficiency, often using model-based, predictive, or adaptive techniques.

Motor Control
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24since 2023
-70.0%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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23since 2023
+83.3%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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19since 2023
+25.0%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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19since 2023
+100.0%YoY
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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19since 2023
-71.4%YoY
Battery Management Systemsfiltered

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

Power Distribution & StorageElectrical Measurement
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17since 2023
+350.0%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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17since 2023
-25.0%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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16since 2023
+25.0%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.

Magnets & InductorsElectric Motors & Generators
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15since 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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12since 2023
new
Connector Locking Mechanisms

Mechanical features or components integrated into connector housings or mating interfaces to ensure secure engagement and prevent accidental disengagement.

Electrical Connectors
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11since 2023
+500.0%YoY
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.

Optical Elements & Systems
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7since 2023
+200.0%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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6since 2023
+50.0%YoY
Solar Power Integration & Applications

Systems that incorporate solar panels as a primary or auxiliary power source for various applications, including visual displays, remote devices, and portable battery charging, often emphasizing efficiency and adaptability.

Power Distribution & Storage
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5since 2023
+100.0%YoY
Flexible/Foldable Device Structures

Engineering solutions for creating electronic devices with bendable, foldable, or stretchable form factors, often involving hinges, flexible displays, and sliding mechanisms to enable dynamic physical configurations.

Hardware Platform (Cooling, Power, Packaging)
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3since 2023
new
Photonic Integration & Interconnects

The design and manufacturing of integrated circuits that combine optical and electronic components, particularly for high-speed data communication between processors and memory.

Optical Elements & Systems
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3since 2023
+100.0%YoY
Integrated Display & Illumination

Systems that combine light sources, waveguides, and display elements into unified products for backlighting, automotive applications, general lighting, or color-corrected displays.

Optical Elements & Systems
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3since 2023
n/a
Semiconductor Electrical Test

Techniques and apparatus for electrically testing semiconductor devices, integrated circuits, or wafers during manufacturing or post-assembly, including built-in self-test (BIST) and contact reliability assessment.

Electrical Measurement
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2since 2023
new
Metasurface & Diffractive Optics

Engineering of artificial subwavelength structures (meta-atoms) to create metasurfaces that manipulate light properties (phase, polarization, wavelength) for multi-functional optical devices.

Optical Elements & Systems
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2since 2023
new
Advanced Material Characterization

Techniques and systems for precisely measuring electrical or electromagnetic properties of materials or components, often involving specialized resonators, waveguides, or multi-range measurement systems to ensure accuracy.

Electrical Measurement
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1since 2023
new
Advanced Optical Imaging & Lens Design

Development of sophisticated optical lens assemblies and computational methods to achieve high-resolution, precise, or specialized imaging, often for medical or scientific applications.

Optical Elements & Systems
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1since 2023
new
High-Speed Signal Integrity

Design techniques and components within connectors to minimize signal degradation, crosstalk, and impedance mismatches for high-frequency data transmission.

Electrical Connectors
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1since 2023
n/a

Patents

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Battery Management Systems
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