Tetsuro Kato

This inventor holds 24 USPTO granted patents and 3 EPO patents, primarily in Magnetic Materials. Top assignees: Sony Corporation, Hitachi Metals, Ltd., Nec Corporation. Active years: 1981-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuro Kato. Retrieved from https://idiyas.com/inventor/tetsuro-kato-3tmbhrem

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 24

% Patents Active = 91.7

EPO Patents = 3 (Patent Applications = 3)

Average Co-Inventor Count = 2.0

ph-index = 8

Forward Citations = 204(Granted Patents)

Location History:

Atsugi, JP (1984)
Kanagawa, JP (1987 - 2011)
Tottori, JP (2017 - 2019)
Osaka, JP (2019)
Tokyo, JP (1981 - 2023)

Company Filing History:

Mitsubishi Denki Kabushiki Kaisha

patents

5. 1 out of 16,618

Mitsubishi Electric Corporation

Years Active: 1981-2025

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Areas of Expertise:

Magnetic Core Powder

Fe-Based Alloy Powder

Metal Powder Core

Data Storage Device

Memory Modules

Signal Output System

Semiconductor Photocoupler

Image Transformation

Video Signal Processing

Non-Contact Recording Medium

Digital Velocity Error Compensator

24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12251760 - Magnetic core powder, magnetic core and coil device using it, and method for producing magnetic core powder (2025-03-18),

2. 11545286 - Crystalline Fe-based alloy powder and method for producing same (2023-01-03),

3. 11484942 - Alloy powder, fe-based nanocrystalline alloy powder and magnetic core (2022-11-01),

4. 10418160 - Metal powder core, coil component employing same, and fabrication method for metal powder core (2019-09-17),

5. 10372361 - Data storage device including multiple memory modules and circuitry to manage communication among the multiple memory modules (2019-08-06),

6. 10312004 - Metal powder core comprising copper powder, coil component, and fabrication method for metal powder core (2019-06-04),

7. 10186358 - Metal powder core, coil component employing same, and fabrication method for metal powder core (2019-01-22),

8. 9704627 - Metal powder core comprising copper powder, coil component, and fabrication method for metal powder core (2017-07-11),

9. 7995119 - Information recording apparatus, non-contact recording medium and recording method for the same (2011-08-09),

10. 6618177 - Light space-transmission device (2003-09-09),

11. 6487250 - Signal output system (2002-11-26),

12. 5459336 - Semiconductor photocoupler with changing capacitance (1995-10-17),

13. 5373568 - Apparatus for image transformation (1994-12-13),

14. 5349211 - Semiconductor infrared emitting device with oblique side surface with (1994-09-20),

15. 5327501 - Apparatus for image transformation (1994-07-05),

Title: Tetsuro Kato: Innovator in Fe-based Alloy Technologies

Introduction

Tetsuro Kato is a distinguished inventor based in Tokyo, Japan, known for his significant contributions to materials science, particularly in the field of Fe-based alloys. With a remarkable portfolio of 23 patents, Kato has made substantial advancements in the development of advanced alloy powders that possess unique structural characteristics and applications.

Latest Patents

Among his latest innovations are two notable patents. The first patent describes a crystalline Fe-based alloy powder and method for producing it. This alloy powder is composed of Fe-based alloy particles that contain nanocrystal grains with an average grain size of 30 nm or less. It boasts a particle diameter correlation, where d50, representing a cumulative frequency of 50% by volume, ranges from 3.5 µm to 35.0 µm.

The second patent introduces an innovative alloy powder with a composition designated by FeCuSiBCrSnC. The specifications for this alloy involve precise atomic percentages for each component, ensuring the material's optimal performance. The percentages must fall within specific ranges, effectively enhancing its properties for various applications, particularly in magnetic cores.

Career Highlights

Tetsuro Kato has an illustrious career that includes working with prominent companies such as Sony Corporation and Hitachi Metals Ltd. His tenure at these organizations has provided him with a robust foundation in research and development, enabling him to explore and innovate in metallic alloys.

Collaborations

Throughout his career, Kato has collaborated with talented individuals, including Shin Noguchi and Yoshiyuki Nakamura. These partnerships have allowed for a dynamic exchange of ideas and concepts, further enriching his work in the field.

Conclusion

Tetsuro Kato stands out as a prolific inventor whose work with Fe-based alloy powders showcases his commitment to advancing materials science. With his impressive array of patents and collaborative efforts, he continues to drive innovation in alloy technology, contributing to various industries and applications. His dynamic career reflects a lasting impact on the field, highlighting the importance of research and empirical exploration in the world of inventions.

Profile summary based on public USPTO records.