Company patents

YAZAKI CORPORATION

Yazaki Corporation's patent strategy reveals a strong, sustained focus on its core 'Electrical Connectors' (38.5% of portfolio) and 'Vehicle Body Fittings' (17.3% of portfolio), both of which saw significant growth in 2024 and 2025, with 'Vehicle Body Fittings' experiencing an 87.0% YoY increase in 2025. While the company maintains a broad portfolio, the rapid growth in 'Power Cable Installation' (118.4% YoY in 2025) and 'Batteries & Fuel Cells' (112.0% YoY in 2025) suggests an emerging strategic emphasis on energy infrastructure and storage, despite the partial data for 2026 showing a decrease in filings across most 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.

1,557 US filings (since 2023) · 11 categories · 36 themes

Busbar Systems for Power Distribution is up +232.1% YoY. Worth a look.
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 ConnectorsCables & ConductorsPower Cable Installation
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484since 2023
+8.8%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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394since 2023
+6.2%YoY
Cable Harness & Armor Design

Structural design and manufacturing techniques for bundling multiple wires into harnesses, including protective layers like braiding and interlocking armor, and methods for assembly and termination.

Cables & Conductors
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331since 2023
+30.0%YoY
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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243since 2023
-32.0%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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238since 2023
-20.9%YoY
Busbar Systems for Power Distribution

Conductive bars or plates used for efficient power distribution within electrical apparatus, often featuring specific designs for connection, thermal management, or modularity to reduce material costs and increase rigidity.

Power Cable Installation
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192since 2023
+232.1%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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77since 2023
+105.6%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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70since 2023
-20.7%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 & StorageElectrical Measurement
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59since 2023
+11.1%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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55since 2023
+58.3%YoY
Specialized Conductor Formulations

Development of new conductive materials, including powders, composites, and alloys, designed for specific electrical performance, manufacturing processes, or applications beyond basic copper wires.

Cables & Conductors
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42since 2023
+166.7%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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41since 2023
+171.4%YoY
In-Vehicle Electronics & Power

Integration and control of electronic components within the vehicle, including power distribution, thermal management for integrated circuits, and advanced user interfaces such as voice assistants, often involving specialized housings or trim.

Vehicle Body Fittings
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38since 2023
+22.2%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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37since 2023
-45.5%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 & Storage
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30since 2023
+120.0%YoY
Wearable Display Optics

Optical systems and components specifically designed for head-mounted displays, augmented reality (AR) glasses, and virtual reality (VR) headsets, focusing on image projection, waveguide integration, and display durability.

Optical Elements & Systems
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30since 2023
-8.3%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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26since 2023
+175.0%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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25since 2023
-44.4%YoY
Advanced Cable Insulation & Sheathing

Development of polymer compositions and material structures for electrical insulation and protective sheathing of cables, focusing on properties like flame retardancy, flexibility, and semiconductivity.

Cables & Conductors
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20since 2023
-16.7%YoY
ADAS Perception & Display

Systems utilizing various sensors (e.g., cameras, radar, sonar) to perceive the vehicle's surrounding environment, detect objects, and process/display relevant information to the driver for enhanced awareness, assistance in maneuvers, or safety.

Vehicle Body Fittings
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17since 2023
+60.0%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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17since 2023
+100.0%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 PropulsionBatteries & Fuel Cells
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14since 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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14since 2023
+400.0%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 Measurement
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13since 2023
+300.0%YoY
Interior Storage & Mounting Solutions

Devices and structural elements within the vehicle cabin or attached to the vehicle body designed to organize, secure, or support various articles, equipment, or even pets, often featuring customizable compartments or robust attachment mechanisms.

Vehicle Body Fittings
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12since 2023
+25.0%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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11since 2023
+66.7%YoY
Smart Vehicle Access & Entry Aids

Technologies that enable automated or mobile device-controlled access to a vehicle, including keyless entry, remote functions, and power-assisted steps or pedals designed to facilitate easier ingress and egress.

Vehicle Body Fittings
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11since 2023
-25.0%YoY
Cable Stripping & Cutting Tools

Handheld or motorized tools designed for efficiently removing insulation (stripping) or severing (cutting) electrical wires and cables during installation or maintenance processes.

Power Cable Installation
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9since 2023
+100.0%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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7since 2023
+200.0%YoY
Integrated Occupant Protection

Safety features built into or around vehicle seats to protect occupants during various accident scenarios, including airbags, pre-crash positioning, and blast attenuation.

Vehicle Body Fittings
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7since 2023
0.0%YoY
Hybrid/Electric Drive Unit Design

Addresses the design and arrangement of electric motors, transmissions, and associated power electronics (like inverters) to form integrated drive units for hybrid or electric vehicles, including specific components like busbars and electric brakes.

Vehicle Powertrain Arrangement
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6since 2023
+300.0%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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6since 2023
+200.0%YoY
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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3since 2023
new
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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3since 2023
n/a
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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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

Patents

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