Company patents
FUJITSU GENERAL LIMITED
FUJITSU GENERAL LIMITED's patent strategy reveals a strong, but recently volatile, focus on HVAC & Air Conditioning, which constitutes 34.2% of its portfolio and saw a remarkable 350.0% YoY growth in 2024 before a significant decline. Surprisingly, despite its core business, the company shows a rapidly shifting priority away from Heat Exchangers (Specific Types) and Heat Exchange Components, both experiencing a -100.0% YoY decline in patenting activity so far in 2026, indicating a potential divestment or maturation in these areas.
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.
161 US filings (since 2023) · 10 categories · 23 themes
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.
Specific heat exchanger designs and auxiliary components tailored for integration into refrigeration, air conditioning, or heat pump systems, often involving gas-liquid separation or rotary mechanisms.
Techniques and mechanisms to optimize the performance, energy consumption, and operational range of compressors in refrigeration and heat pump systems, often involving variable control of compression parameters like volume ratio or speed.
Engineering and diagnostic aspects of individual heating, ventilation, and air conditioning components, such as PTC heaters, air ducts, flow control valves, and compressor monitoring.
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.
Design and control strategies for improving the efficiency, stability, and operational flexibility of refrigerant circuits, including component integration, flow management, phase separation, and pressure regulation.
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.
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.
Systems and methods for intelligent control of HVAC equipment, often incorporating sensors, communication networks, and adaptive algorithms to optimize comfort, energy efficiency, and operational parameters.
Application of artificial intelligence, machine learning, and data analysis techniques for tasks such as fault detection, predictive maintenance, learning-based control, and intelligent environmental monitoring in HVAC systems.
Heat transfer devices that utilize the phase change of a working fluid (evaporation and condensation) to efficiently move heat, often incorporating capillary structures, heat pipes, or vapor chambers.
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).
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.
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.
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.
Non-traditional refrigeration and heat pump systems that utilize principles other than vapor compression, such as magnetocaloric effects, thermoelectric effects, absorption cycles, or thermochemical reactions.
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.
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.
Technologies focused on improving indoor air quality by removing pollutants, microorganisms, or excess humidity, often employing specialized materials, filtration, or air circulation strategies.
Design and integration of bearings within larger mechanical systems or devices, focusing on mounting structures, housing, endplay management, and overall assembly for specific applications.
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.
Design and engineering solutions for creating self-contained, mobile, or miniaturized pump systems, often incorporating battery power, ergonomic features, and integrated components for ease of use and transport.
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.
Patents
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