Company patents

TATSUTA ELECTRIC WIRE & CABLE CO., LTD.

TATSUTA ELECTRIC WIRE & CABLE CO., LTD. surprisingly shows a strong focus on "Printed Circuits & Electronic Assemblies," representing 62.3% of its patent portfolio, despite a significant decline of -66.7% in this category so far in 2026. While the company has a broad materials patent portfolio, several categories like "Coating & Surface Treatment" and "Layered Products (Laminates, Films)" have seen a -100.0% decline in patenting activity so far in 2026, indicating a potential shift in priorities away from 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.

61 US filings (since 2023) · 12 categories · 15 themes

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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37since 2023
0.0%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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33since 2023
-10.0%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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19since 2023
-44.4%YoY
Battery Electrode Binders

Adhesive compositions specifically formulated to bind active materials within battery electrodes, emphasizing properties like electrolyte resistance, adhesion to current collectors, and processability for manufacturing.

Adhesives
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8since 2023
0.0%YoY
Flexible Electronic Films & Electrodes

Thin, multi-layered films and structures specifically designed for electronic applications, including flexible substrates for devices, display panel components, and active material layers for battery electrodes.

Layered Products (Laminates, Films)
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5since 2023
new
Automated Coating & Material Deposition

Systems and processes for applying coatings, films, or materials onto surfaces in manufacturing or industrial contexts, often involving automated movement, surface preparation, or post-application treatment.

Spraying & Atomizing
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5since 2023
-66.7%YoY
Thermally Conductive Additives

Materials added to polymers to modify their thermal transfer properties, typically increasing conductivity for heat dissipation in applications like electronics or battery packs.

Polymer Additives
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4since 2023
-50.0%YoY
Electronics Encapsulation & Sealing

Materials and processes for hermetic encapsulation, conformal coating, optical chip sealing, and stretchable conductors for electronic and optoelectronic devices.

Semiconductor Packaging & Encapsulation
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4since 2023
n/a
Polymer Composites with Functional Fillers

Polymer compositions incorporating inorganic or organic filler materials to impart specific functional properties such as thermal conductivity, flame retardancy, electrical conductivity, or enhanced mechanical strength and dimensional stability.

Polymer Additives
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3since 2023
0.0%YoY
Precision Dosing & Targeted Spraying

Systems and methods for accurately controlling the volume, location, and characteristics of sprayed fluids, often involving sensors, feedback, or specific nozzle geometries for precise application.

Spraying & Atomizing
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3since 2023
0.0%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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3since 2023
new
Hot-Melt Adhesive Formulations

Development of adhesive compositions that are applied in a molten state and solidify upon cooling, focusing on specific polymer blends, additives, and their resulting mechanical or optical properties.

Adhesives
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2since 2023
n/a
Conformal & Selective Film Deposition

Methods for depositing thin films with controlled conformality, thickness, and material properties, including selective deposition on specific areas, often using atomic layer deposition (ALD), chemical vapor deposition (CVD), or epitaxial growth.

Coating & Surface Treatment
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2since 2023
n/a
Spray-Based Cleaning & Disinfection

Systems specifically engineered to use sprayed liquids or aerosols for cleaning surfaces, removing residues, or distributing disinfectants in various environments.

Spraying & Atomizing
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1since 2023
new
Integrated Multi-Component Spray Systems

Spraying devices designed to handle, mix, or independently dispense multiple distinct fluid components, often with mechanisms for selection, blending, or sequential application.

Spraying & Atomizing
Who else files here? →
1since 2023
n/a

Patents

Showing 41-50 of 101

Page 5 of 11
US 20230371168 A1APPLICATION
H05K1/02

SHIELD PRINTED WIRING BOARD EQUIPPED WITH GROUND MEMBER, AND GROUND MEMBER

Filed:2021-09-16Pub:2023-11-16
Applicant:TATSUTA ELECTRIC WIRE & CABLE CO., LTD.

A shielded printed wiring board with a ground member wherein even though a thermal load is applied, the connection stability between the electroconductive particles of a ground member and the shielding layer of a shielding film is hardly deteriorated is provided. A shielded printed wiring board with a ground member of the present invention is a shielded printed wiring board with a ground member, including: a substrate film formed by sequentially stacking a base film, a printed circuit including a ground circuit, and an insulating film; a shielding film including a shielding layer and a protective layer laminated on the shielding layer, the shielding film covering the substrate film such that the shielding layer is closer to the substrate film than the protective layer is; and a ground member arranged on the protective layer of the shielding film, the ground member including an external connection member having a first main surface and a second main surface opposite to the first main surface, and having electroconductivity, electroconductive particles disposed on the first main surface side, and an adhesive resin for fixing the electroconductive particles to the first main surface, wherein circularity of the cross sections of the electroconductive particles in the cross section of the ground member is 0.35 or more, and the electroconductive particles are penetrating the protective layer of the shielding film and connected to the shielding layer of the shielding film, and the external connection member of the ground member is electrically connectable to an external ground.

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