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For the Inventor, By the Inventor

Nagano, Japan

Atsushi Nakamura

This inventor holds 72 USPTO granted patents and 8 published patent applications and 2 EPO patents, primarily in Optical Semiconductor Devices (CPC class H01F). Top assignees: Hitachi, Ltd., Shinko Electric Industries Co., Ltd., Lumentum Japan, Inc.. Active years: 1989-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Atsushi Nakamura. Retrieved from https://idiyas.com/inventor/atsushi-nakamura-ainsi393

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

Calculating rank
USPTO Granted Patents = 72 

% Patents Active = 80.6

 

Average Co-Inventor Count = 3.9

ph-index = 14

Forward Citations = 772(Granted Patents)

Forward Citations (Not Self Cited) = 757(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kokubuji, JP (1990)
  • Kokubunji, JP (1989 - 1994)
  • Hachiouji, JP (1998)
  • Hachioji, JP (1996 - 2000)
  • Tachikawa, JP (2006 - 2007)
  • Kodaira, JP (2001 - 2009)
  • Koganei, JP (2006 - 2009)
  • Komoro, JP (1996 - 2013)
  • Nagano-ken, JP (2015)
  • Nagano, JP (2015 - 2024)

Company Filing History:

goldMedal27 out of 42,752 
 
Hitachi, Ltd.
 patents
silverMedal16 out of 1,704 
 
Shinko Electric Industries Co., Ltd.
 patents
bronzeMedal13 out of 67 
 
Lumentum Japan, Inc.
 patents
4. 5 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
5. 5 out of 98 
 
Oclaro Japan, Inc.
 patents
6. 3 out of 30 
 
Hitachi Tobu Semiconductor
 patents
7. 3 out of 3,781 
 
Renesas Technology Corp.
 patents
8. 2 out of 134 
 
Opnext Japan, Inc.
 patents
9. 1 out of 52 
 
Hitachi Global Storage Technologies
 patents
10. 1 out of 30 
 
Renesas Eastern Japan Semiconductor, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1989-2026

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Areas of Expertise:
Optical Semiconductor Device
Semiconductor Laser
Electro-Absorption Modulator
Optical Amplifier
Light-Emitting Device
Optical Module
Signal Generator
Coil Substrate
Inductor
Wiring Substrate
Magnetic Disk Drive
Printed Wiring Board
72 patents (USPTO):Explore Patents
1. 12573815 - Semiconductor laser for preventing hole burning effect (2026-03-10),
2. 12261412 - Electro-absorption modulator (2025-03-25),
3. 12218480 - Semiconductor optical amplifier integrated laser (2025-02-04),
4. 12126138 - Optical semiconductor device and semiconductor light-emitting device (2024-10-22),
5. 12046870 - Optical semiconductor device (2024-07-23),
6. 12040596 - Optical semiconductor device, optical subassembly, and optical module (2024-07-16),
7. 12027823 - Semiconductor laser (2024-07-02),
8. 12027822 - Optical semiconductor device (2024-07-02),
9. 11552448 - Semiconductor optical amplifier integrated laser (2023-01-10),
10. 11451302 - Transmitter optical subassembly and optical module (2022-09-20),
11. 11329450 - Electro-absorption optical modulator and manufacturing method thereof (2022-05-10),
12. 11196232 - Modulation doped semiconductor laser and manufacturing method therefor (2021-12-07),
13. 10771161 - Optical transmission module (2020-09-08),
14. 10395810 - Inductor (2019-08-27),
15. 10063029 - Optical transmission module (2018-08-28),

Title: The Innovative Mind of Atsushi Nakamura

Introduction: Atsushi Nakamura, a visionary inventor hailing from Nagano, Japan, is renowned for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Atsushi Nakamura holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to problem-solving.

Career Highlights: With a career spanning over two decades, Atsushi Nakamura has worked with leading tech companies and research institutions, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Atsushi Nakamura has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and excellence in all his endeavors.

Conclusion: Atsushi Nakamura's passion for innovation, coupled with his relentless drive to push the boundaries of what is possible, cements his legacy as a true pioneer in the world of technology and invention.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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