Company patents

Hitachi, Ltd.

Hitachi Ltd. shows a surprising shift in its patent strategy, with a significant decline across many key computing categories in 2026 so far, such as Input/Output & User Interfaces (down 84.6% YoY) and Operating Systems & Program Control (down 82.4% YoY), despite a strong focus on Business Methods & Fintech, which represents 13.0% of its portfolio. While Computer Security saw rapid growth in 2024 (up 38.7% YoY) and Image Processing in 2025 (up 53.3% YoY), both have seen sharp declines in 2026, indicating a potential re-evaluation of priorities across its technology domains.

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.

2,353 US filings (since 2023) · 12 categories · 50 themes

Memory System Performance & Reliability

Hardware and control techniques for optimizing memory access latency, ensuring data integrity, and managing storage resources efficiently. This includes error correction, read/write voltage control, and intelligent data placement or in-memory computation.

Computer Hardware Architecture
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213since 2023
-79.6%YoY
System Resource & Power Optimization

Methods and systems for efficiently allocating computing resources, balancing workloads, and managing power states to improve performance, reduce energy consumption, or enhance reliability in computing platforms.

Operating Systems & Program Control
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152since 2023
-46.0%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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84since 2023
0.0%YoY
Data Resiliency & Recovery

Encompasses strategies and technologies to ensure the availability, integrity, and recoverability of data and systems, including robust backup, replication, error correction, and efficient data restoration.

System Reliability & Diagnostics
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83since 2023
-54.3%YoY
Secure Data Sharing & Rights Management

Mechanisms to facilitate the secure exchange of data between different entities or systems while enforcing usage policies, managing digital content rights, and ensuring data consistency during replication or transfer.

Computer Security
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74since 2023
-60.0%YoY
Predictive System Health

Techniques for monitoring system components and behaviors to anticipate failures, performance degradation, or anomalies, often leveraging machine learning for pattern recognition and forecasting.

System Reliability & Diagnostics
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71since 2023
+40.0%YoY
AI/ML for Industrial Process Optimizationfiltered

Applying machine learning and artificial intelligence models to analyze industrial data, predict system behavior, and optimize control strategies for improved efficiency, quality, or environmental compliance in manufacturing and operations.

Industrial Control Systems
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57since 2023
-60.0%YoY
Intelligent Decision Support

Systems that process data to provide personalized recommendations, predict events, or automate decision-making processes based on learned patterns, user behavior, or environmental factors.

Databases & Information Retrieval
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54since 2023
+72.7%YoY
Access Control & Identity Management

Systems and methods for authenticating users, devices, or applications, authorizing their access to resources based on policies, and managing digital identities across various platforms.

Computer Security
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50since 2023
+45.5%YoY
Automated Fault Response

Involves systems designed to automatically detect errors or failures and initiate predefined or intelligent corrective actions, recovery procedures, or notifications to minimize downtime and manual intervention.

System Reliability & Diagnostics
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48since 2023
+70.0%YoY
Robot Health Monitoring & Safety

Methods and systems for monitoring the operational status, detecting anomalies, ensuring safe interaction, and preventing damage or injury in robotic systems.

Manipulators & Robotics
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46since 2023
+23.1%YoY
AI Information Synthesis

Systems and methods utilizing artificial intelligence, particularly large language models and neural networks, to extract, summarize, generate, or categorize information from unstructured or semi-structured data sources.

Databases & Information Retrieval
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45since 2023
+166.7%YoY
Specialized Data Integration

Methods and systems for integrating, transforming, and managing complex or domain-specific data from disparate sources into a unified structure, often for specific applications like social networks, genomics, or business forms.

Databases & Information Retrieval
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44since 2023
-55.6%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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41since 2023
-35.7%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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35since 2023
-38.5%YoY
AI for Medical Diagnostics

Utilizing machine learning, particularly deep learning, to analyze medical data such as images, sensor readings, or physiological signals for disease prediction, diagnosis, or treatment assessment.

Machine Learning & AIImage ProcessingComputer VisionManipulators & Robotics
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33since 2023
+83.3%YoY
Industrial Energy Management Systems

Control systems designed to monitor, optimize, and manage energy generation, storage, distribution, and consumption within industrial facilities or interconnected power networks to improve efficiency and meet regulatory requirements.

Industrial Control Systems
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33since 2023
-9.1%YoY
Vision-Based Object & Pose Estimation

Methods and apparatus for detecting objects and determining their three-dimensional position and orientation (pose) using imagery or point cloud data, often for navigation, surveying, or environmental understanding.

Computer Vision
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32since 2023
-25.0%YoY
Video Quality & Encoding Optimization

Methods and apparatus for improving the visual fidelity, resolution, or compression efficiency of video signals, often through advanced processing, up-scaling, or neural network-based filters.

Computer Vision
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30since 2023
-14.3%YoY
Video Enhancement & Object Tracking

Methods and systems for improving the quality of video streams, generating intermediate frames, or continuously locating and following objects within a sequence of images, even under occlusion.

Image Processing
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29since 2023
-12.5%YoY
Secure Data Storage & Provenance

Techniques for protecting data at rest or in backup, ensuring its integrity, confidentiality, and verifiable origin, often involving encryption, unique identifiers, or secure repositories.

Computer Security
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28since 2023
-83.3%YoY
Large Model Text Generation

Techniques for generating human-like text or other content using large pre-trained models, often involving prompt engineering, speculative decoding, or multi-modal inputs for content creation.

Machine Learning & AI
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23since 2023
+400.0%YoY
Quantum Machine Learning

Developing and applying machine learning algorithms that leverage quantum computing principles, such as quantum circuits or autoencoders, for tasks like simulation or data processing.

Machine Learning & AI
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22since 2023
-25.0%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.

Manipulators & RoboticsImage Processing
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22since 2023
-44.4%YoY
AI/ML Hardware Acceleration

Specialized hardware, architectural designs, and computational methods to improve the speed, efficiency, and security of artificial intelligence and machine learning model execution, particularly for inference and data processing.

Machine Learning & AIComputer Hardware Architecture
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21since 2023
+20.0%YoY
Virtualization & Secure Remote Access

Technologies enabling the creation and management of virtual computing environments, including virtual machines and virtual desktops, with an emphasis on secure and efficient remote access, updates, and performance.

Operating Systems & Program Control
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19since 2023
-87.5%YoY
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.

Computer VisionManipulators & Robotics
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18since 2023
+125.0%YoY
Specialized Compute Architectures

Novel hardware designs and processing pipelines tailored for specific computational tasks, such as graphics rendering, neural network operations, or matrix transformations, often involving custom circuits, memory arrays, or data flow mechanisms.

Computer Hardware Architecture
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17since 2023
0.0%YoY
AI/ML for Cryptographic Security

Applying artificial intelligence and machine learning techniques to enhance cryptographic systems, such as generating encryption models, improving zero-trust architectures, or enabling privacy-preserving computations like federated learning.

Computer Security
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15since 2023
0.0%YoY
AR/VR User Interfaces

Techniques for rendering, interacting with, and managing content within augmented or virtual reality environments, including spatial tracking, gaze interaction, and dynamic multi-application display management.

Input/Output & User Interfaces
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14since 2023
+50.0%YoY
Interactive 3D Data Visualization

Methods and systems for displaying complex data in three-dimensional graphical formats, allowing users to manipulate, explore, and derive insights from the data through interactive controls.

Input/Output & User Interfaces
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14since 2023
+500.0%YoY
MLOps & Model Deployment

Systems and methods for automating the lifecycle of machine learning models, including pipeline deployment, model management, versioning, and configuring for different inference environments.

Machine Learning & AI
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14since 2023
-66.7%YoY
High-Speed Data Interconnects

Technologies for establishing and managing high-bandwidth, low-latency communication pathways between computing components, peripherals, or systems, focusing on signal integrity, synchronization, and interface standards.

Computer Hardware Architecture
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14since 2023
n/a
Damage Detection & Structural Assessment

Automated systems using image processing and artificial intelligence to identify, classify, and assess the extent of damage to structures or objects, supporting maintenance or insurance claims.

Image Processing
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13since 2023
+100.0%YoY
Cloud-Native & Microservice Management

Technologies for deploying, managing, and governing applications and services in cloud environments, particularly focusing on containerization, microservice architectures, API gateways, and distributed data management.

Operating Systems & Program Control
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13since 2023
-77.8%YoY
Personalized Recommendations

Systems that use user data, preferences, and machine learning to generate tailored advice, product recommendations, goal-setting plans, or contextual information for individuals across different domains.

Business Methods & Fintech
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12since 2023
+100.0%YoY
Specialized End-Effectors & Mechanisms

Design and control of advanced robotic grippers, tools, and mechanical linkages for specific manipulation tasks or operating in challenging environments.

Manipulators & Robotics
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12since 2023
+100.0%YoY
Digital Asset Management

Technologies for securing, managing, and transacting with virtual currencies, non-fungible tokens (NFTs), and other blockchain-based digital assets, including hardware wallets and tokenization schemes for various purposes.

Business Methods & Fintech
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10since 2023
0.0%YoY
Digital Twins & Blockchain for Assets

Creating virtual representations (digital twins) of physical industrial assets or processes for simulation and analysis, often combined with blockchain technology for secure data traceability and distributed control.

Industrial Control Systems
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10since 2023
+50.0%YoY
Compliance & Transaction Validation

Systems and methods designed to ensure adherence to regulatory rules, corporate policies, or contractual agreements, often involving automated validation of electronic transactions, smart contract enforcement, or API governance.

Operating Systems & Program Control
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9since 2023
0.0%YoY
Federated & Distributed ML

Methods for training machine learning models across multiple decentralized devices or servers while keeping data localized, often involving aggregation of model parameters and secure communication.

Machine Learning & AI
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8since 2023
-50.0%YoY
Automated Transaction Systems

Systems designed to streamline and automate various commercial transactions, including mobile-enhanced processes, secure online checkouts, customer service interactions, and privilege issuance, often leveraging digital authentication.

Business Methods & Fintech
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6since 2023
+100.0%YoY
Multi-modal Sensor Fusion

Techniques for combining data from disparate sensor types (e.g., cameras, radar, mobile device signals) to achieve a more robust and comprehensive understanding of an environment or subject, often leveraging machine learning for interpretation and correlation.

Computer Vision
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6since 2023
-66.7%YoY
Generative AI for Images

Techniques utilizing deep learning models like Generative Adversarial Networks (GANs) or diffusion models to create new images, modify existing ones, or generate synthetic data based on various inputs or conditions.

Image ProcessingComputer Vision
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6since 2023
0.0%YoY
Multimodal Data Fusion

Techniques for combining and analyzing information from multiple distinct data modalities (e.g., text, image, video, audio, sensor data) to derive richer insights or improve system performance and decision-making.

Machine Learning & AIDatabases & Information Retrieval
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5since 2023
-66.7%YoY
Operational Technology (OT) Security

Specialized cybersecurity solutions designed to protect industrial control systems (ICS), SCADA networks, and other operational technology environments from cyber threats and unauthorized access.

Computer Security
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4since 2023
new
3D Reconstruction & Modeling

Processes for creating or manipulating three-dimensional digital representations of objects or environments, including mesh generation, surface fitting, and depth estimation from multiple views.

Image Processing
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4since 2023
0.0%YoY
On-Chip Power Management & Protection

Integrated circuits or sub-circuits designed to regulate, balance, or protect power delivery within a device, often involving specific transistor and capacitor arrangements.

Computer Hardware Architecture
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4since 2023
n/a
Geospatial Intelligence

Technologies that process, analyze, and leverage geographic information system (GIS) data, location data, and spatial analytics for applications such as monitoring, navigation, and environmental assessment.

Databases & Information Retrieval
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1since 2023
new
Real-time Graphics Rendering

Techniques and hardware architectures designed to efficiently generate and display complex 3D graphics, particularly for interactive applications like virtual reality, focusing on speed and visual quality.

Image Processing
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1since 2023
new

Patents

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