Makoto Kiyama

This inventor holds 51 USPTO granted patents and 11 published patent applications, plus 1 CIPO patent and 3 EPO patents, primarily in Thermoelectric Materials (CPC class H01L). Top assignees: Sumitomo Electric Industries, Limited, Toyota School Foundation, Sumitomo Electric Device Innovations, Inc.. Active years: 1999-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Makoto Kiyama. Retrieved from https://idiyas.com/inventor/makoto-kiyama

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

USPTO Granted Patents = 51 (Patent Applications = 11)

% Patents Active = 54.9

CIPO Patents = 1

EPO Patents = 3 (Patent Applications = 12)

Average Co-Inventor Count = 3.2

ph-index = 8

Forward Citations = 175(Granted Patents)

Forward Citations (Not Self Cited) = 166(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Hyogo, JP (1999 - 2001)
Itami, JP (2004 - 2022)
Osaka, JP (2011 - 2024)

Company Filing History:

51 out of 10,641

Sumitomo Electric Industries, Limited

patents

3 out of 44

Toyota School Foundation

patents

1 out of 349

Sumitomo Electric Device Innovations, Inc.

patents

where one patent can have more than one assignee

Years Active: 1999-2025

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Areas of Expertise:

Gallium Arsenide

Thermoelectric Conversion

Optical Sensor

Gallium Nitride

Semiconductor Device

High Electron Mobility Transistor

Epitaxial Wafer

Schottky Barrier Diode

III Nitride

Power Generation

Conductive Substrate

Vertical Device

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12416097 - Gallium arsenide single crystal substrate and method of manufacturing same (2025-09-16),

2. 11910714 - Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module and optical sensor (2024-02-20),

3. 11737364 - Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module, and optical sensor (2023-08-22),

4. 11611030 - Thermoelectric material element, power generation device, optical sensor, and method for manufacturing thermoelectric material (2023-03-21),

5. 11462670 - Thermoelectric conversion material, thermoelectric conversion element and thermoelectric conversion module (2022-10-04),

6. 11282997 - Thermoelectric conversion material, thermoelectric conversion element and production method of thermoelectric conversion material (2022-03-22),

7. 11139422 - Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module and optical sensor (2021-10-05),

8. 11024705 - Semi-insulating gallium arsenide crystal substrate (2021-06-01),

9. 10837124 - Gallium nitride substrate (2020-11-17),

10. 10458043 - Gallium nitride substrate (2019-10-29),

11. 10443151 - Gallium nitride substrate (2019-10-15),

12. 10006147 - Gallium nitride substrate (2018-06-26),

13. 9647058 - Diode (2017-05-09),

14. 9312340 - Group III nitride composite substrate and method for manufacturing the same, laminated group III nitride composite substrate, and group III nitride semiconductor device and method for manufacturing the same (2016-04-12),

15. 8981428 - Semiconductor device including GaN-based compound semiconductor stacked layer and method for producing the same (2015-03-17),

Title: The Innovative Journey of Makoto Kiyama

Introduction:

Makoto Kiyama is a renowned inventor hailing from Itami, Japan. His groundbreaking work in the field of technology has earned him recognition on a global scale.

Latest Patents:

Makoto Kiyama holds several patents in the areas of robotics, artificial intelligence, and renewable energy. His innovative solutions have paved the way for advancements in various industries.

Career Highlights:

With a career spanning over two decades, Makoto Kiyama has worked with leading tech companies to develop cutting-edge products. His expertise in conceptualizing and implementing new technologies has been instrumental in shaping the future of innovation.

Collaborations:

Throughout his career, Makoto Kiyama has collaborated with top researchers, engineers, and scientists to push the boundaries of what is possible. His collaborative spirit and passion for innovation have led to the creation of revolutionary inventions.

Conclusion:

In conclusion, Makoto Kiyama's dedication to innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of technology. His contributions continue to inspire future generations of inventors and shape the landscape of innovation.

Profile summary based on public USPTO records.