Company patents

Beijing CHJ Information Technology Co., LTD.

Beijing CHJ Information Technology Co., LTD. shows a surprising patent strategy with a strong, albeit short-lived, focus on automotive technologies, particularly Electric Vehicle Propulsion, which accounted for 23.7% of its portfolio with 8 patents in 2024, before experiencing a sharp decline of 87.5% in 2025 and 100.0% so far in 2026, indicating a significant shift away from this area. Despite a brief surge in 2024 across multiple categories, the company's overall patenting activity has seen a dramatic reduction across nearly all categories in 2025 and 2026, with many showing 100.0% year-over-year declines so far in 2026.

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.

38 US filings (since 2023) · 12 categories · 12 themes

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 Propulsion
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8since 2023
n/a
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 PropulsionVehicle Control Systems
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7since 2023
-83.3%YoY
Vehicle Lighting Optics

Optical systems and components specifically designed for automotive lighting applications, focusing on beam pattern generation, light distribution, and compact integration within vehicle structures.

Non-portable Lighting Devices
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5since 2023
+50.0%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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4since 2023
-66.7%YoY
Network Clock Synchronization

Methods and systems for maintaining precise time alignment across network devices, often involving timestamps, phase-locked loops, and mechanisms for robustness against signal loss or attacks.

Multiplex Communication
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3since 2023
+100.0%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 Cells
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3since 2023
-50.0%YoY
VRU Protection & Localization

Systems and methods for enhancing the safety of vulnerable road users (pedestrians, cyclists) by improving their detection, prediction, and precise localization relative to the vehicle, often leveraging communication technologies and specialized markers.

Vehicle Control Systems
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2since 2023
new
Flexible Frame Structures & Resource Grouping

Design and configuration of adaptable frame structures, resource block groupings, and subcarrier spacings to optimize data transmission across diverse wireless environments and services, including considerations for fronthaul interfaces.

Physical Transmission & Modulation
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2since 2023
0.0%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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2since 2023
n/a
Braking & Stationary Vehicle Control

Control systems for managing vehicle braking and maintaining a stationary state, including brake pedal actuation sensing, automatic brake hold functions, and coordination with parking brakes.

Vehicle Control Systems
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1since 2023
n/a
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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1since 2023
n/a
Outdoor Fixture Enclosures & Mounting

Mechanical designs for robust light fixture housings, mounting assemblies, and environmental protection, particularly for outdoor or public installations like streetlights and signage.

Non-portable Lighting Devices
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1since 2023
n/a

Patents

Showing 1-10 of 38

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