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Hiromi Seo

This inventor holds 121 USPTO granted patents and 48 published patent applications, primarily in Organic Light Emitting Diodes (CPC class H01L51-5016). Top assignees: Semiconductor Energy Laboratory Co., Ltd., Semiconductor Energy Laboratory Co., Ltd.. Active years: 2014-2026.

USPTO Granted Patents = 121 (Patent Applications = 48)

% Patents Active = 86.8

Average Co-Inventor Count = 4.2

ph-index = 20

Forward Citations = 1,199(Granted Patents)

Forward Citations (Not Self Cited) = 914(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Sagamihara, JP (2015 - 2022)
Kanagawa, JP (2014 - 2024)

Company Filing History:

117 out of 16,652

Semiconductor Energy Laboratory Co., Ltd.

patents

4 out of 300

Semiconductor Energy Laboratory Co., Ltd.

patents

Years Active: 2014-2026

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Areas of Expertise:

Organic Semiconductor

Light-Emitting Device

Display Module

Electronic Appliance

Novel Organic Compound

Heterocyclic Compound

Organometallic Complex

Lighting Module

Electron-Transport Layer

Hole-Transport Layer

Lighting Device

Electronic Device

121 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12666789 - Light-emitting device (2026-06-23),

2. 12648355 - Light-emitting element, compound, organic compound, display module, lighting module, light-emitting device, display device, lighting device, and electronic device (2026-06-02),

3. 12622128 - Light-emitting device, light-emitting apparatus, electronic device, and lighting device (2026-05-05),

4. 12577456 - Light-emitting element, light-emitting device, electronic device, lighting device, and novel organic compound (2026-03-17),

5. 12439814 - Light-emitting element, light-emitting device, display device, electronic appliance, and lighting device (2025-10-07),

6. 12419155 - Hole-transport layer material, electron-blocking layer material, electron-transport layer material, hole-blocking layer material, light-emitting device, light-emitting apparatus, electronic device, and lighting device (2025-09-16),

7. 12349591 - Light-emitting device, light-emitting apparatus, electronic device, and lighting device (2025-07-01),

8. 12302685 - Light-emitting device, light-emitting apparatus, electronic device, and lighting device (2025-05-13),

9. 12295256 - Light-emitting element, light-emitting device, electronic device, and lighting device (2025-05-06),

10. 12262574 - Light-emitting element (2025-03-25),

11. 12250884 - Light-emitting element, light-emitting device, electronic appliance, and lighting device (2025-03-11),

12. 12232342 - Organic semiconductor device, organic el device, photodiode sensor, display device, light-emitting apparatus, electronic device, and lighting device (2025-02-18),

13. 12167675 - Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device (2024-12-10),

14. 12082429 - Light-emitting device, light-emitting apparatus, electronic device, and lighting device (2024-09-03),

15. 12069951 - Light-emitting element, compound, organic compound, display module, lighting module, light-emitting device, display device, lighting device, and electronic device (2024-08-20),

Title: Innovator Spotlight: Hiromi Seo - Pioneering Light-Emitting Technologies.

Introduction: Hiromi Seo, a renowned inventor based in Kanagawa, Japan, has blazed a trail in the field of light-emitting technologies with his impressive portfolio of 104 patents. His groundbreaking work at Semiconductor Energy Laboratory Co., Ltd. has revolutionized the industry, making him a prominent figure in the world of innovation.

Latest Patents:

1. Seo's latest patents include a series of advancements in light-emitting elements, devices, and electronic appliances. These innovations focus on enhancing lifetime, emission efficiency, and practical application of light-emitting technologies.

2. One notable patent describes a multicolor light-emitting element that combines fluorescence and phosphorescence in a stacked-layer structure, minimizing manufacturing steps and maximizing emission efficiency.

Career Highlights: Throughout his career, Hiromi Seo has consistently pushed the boundaries of light-emitting technologies, cementing his reputation as a visionary inventor. His work has not only garnered recognition within the industry but has also contributed significantly to the advancement of innovative display and lighting solutions.

Collaborations: Seo's collaborations with esteemed colleagues such as Satoshi Seo and Tatsuyoshi Takahashi have further enriched his inventive journey. Together, they have synergized their expertise to develop cutting-edge technologies that have set new standards in the field.

Conclusion: In conclusion, Hiromi Seo stands as a trailblazer in the realm of light-emitting technologies, with his relentless pursuit of innovation and commitment to excellence shaping the future of the industry. His impressive patent portfolio and collaborations underscore his position as a pioneering inventor, inspiring generations to come with his visionary approach to invention.

Profile summary based on public USPTO records.

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