Kei Fujii

This inventor holds 23 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignee: Sumitomo Electric Industries, Limited. Active years: 2012-2025.

USPTO Granted Patents = 23 (Patent Applications = 2)

% Patents Active = 95.7

EPO Patents = 2

Average Co-Inventor Count = 4.6

ph-index = 2

Forward Citations = 25(Granted Patents)

Location History:

Itami, JP (2012 - 2018)
Osaka, JP (2020 - 2021)

Company Filing History:

23 out of 10,627

Sumitomo Electric Industries, Limited

patents

Years Active: 2012-2025

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23 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12470046 - Vertical cavity surface-emitting laser (2025-11-11),

2. 10938181 - Vertical cavity surface emitting laser and method for manufacturing vertical cavity surface emitting laser (2021-03-02),

3. 10594110 - Vertical cavity surface emitting laser, method for fabricating vertical cavity surface emitting laser (2020-03-17),

4. 9887310 - Semiconductor layered structure, method for producing semiconductor layered structure, and method for producing semiconductor device (2018-02-06),

5. 9818895 - Semiconductor device, optical sensor device and semiconductor device manufacturing method (2017-11-14),

6. 9773932 - Epitaxial wafer and method for manufacturing same (2017-09-26),

7. 9698287 - Epitaxial wafer, method for producing the same, semiconductor element, and optical sensor device (2017-07-04),

8. 9680040 - Semiconductor device and method for manufacturing the same (2017-06-13),

9. 9608148 - Semiconductor element and method for producing the same (2017-03-28),

10. 9190544 - Photodiode, optical sensor device, and photodiode manufacturing method (2015-11-17),

11. 9171978 - Epitaxial wafer, method for producing the same, photodiode, and optical sensor device (2015-10-27),

12. 9159853 - Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial wafer (2015-10-13),

13. 9129808 - Epitaxial wafer, photodiode, optical sensor device, and methods for producing epitaxial wafer and photodiode (2015-09-08),

14. 9123843 - Semiconductor device (2015-09-01),

15. 9040955 - Semiconductor device, optical sensor device and semiconductor device manufacturing method (2015-05-26),

Title: Kei Fujii - Innovative Inventor from Itami, Japan

Introduction: Kei Fujii is a renowned inventor hailing from Itami, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Kei Fujii holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to innovation.

Career Highlights: With a career spanning over two decades, Kei Fujii has worked with leading research institutions and tech companies, spearheading projects that have revolutionized the industry.

Collaborations: Throughout his career, Kei Fujii has collaborated with top engineers, scientists, and designers, fostering a culture of creativity and excellence in all his projects.

Conclusion: Kei Fujii's passion for innovation and his relentless pursuit of technological advancement make him a true pioneer in the world of inventions.