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For the Inventor, By the Inventor

Yokohama, Japan

Tomoaki Takeyama

This inventor holds 43 USPTO granted patents and 5 published patent applications, primarily in Optical Amplification. Top assignees: Fujitsu Corporation, 1Finity Inc., Fujitsu Telecom Networks Limited. Active years: 2003-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoaki Takeyama. Retrieved from https://idiyas.com/inventor/tomoaki-takeyama

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

USPTO Granted Patents = 43 

% Patents Active = 30.2

Average Co-Inventor Count = 2.0

ph-index = 4

Forward Citations = 56(Granted Patents)


Location History:

  • Kawasaki, JP (2003 - 2013)
  • Yokohama, JP (2006 - 2024)

Company Filing History:

goldMedal42 out of 39,374 
 
Fujitsu Corporation
 patents
silverMedal1 out of 66 
 
1Finity Inc.
 patents
bronzeMedal1 out of 42 
 
Fujitsu Telecom Networks Limited
 patents
where one patent can have more than one assignee

Years Active: 2003-2026

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Areas of Expertise:
Optical Amplifier
Wavelength Multiplexing
Fiber-Optic Communication
Raman Amplifier
Transmission System
Optical Transmission
Gain Control
Wavelength Conversion
Optical Transmission Control
Optical Transfer
Network Management
43 patents (USPTO):Explore Patents
1. 12732297 - Wavelength conversion device and optical transmission system (2026-09-08),
2. 12334979 - Optical wavelength multiplexing transmission device and optical wavelength multiplexing transmission method (2025-06-17),
3. 11870553 - Fiber-optic communication apparatus, fiber-optic communication system, and optical power control method (2024-01-09),
4. 11509394 - Controller and control method for Raman amplifier (2022-11-22),
5. 11294258 - Transmission device and transmission system (2022-04-05),
6. 11153014 - Transmitting apparatus and transmitting method (2021-10-19),
7. 11063684 - Optical transmission system, optical transmission apparatus and transmission method (2021-07-13),
8. 11018763 - Network system, management device, and management method (2021-05-25),
9. 10972188 - Transmission apparatus and transmission method (2021-04-06),
10. 10782589 - Wavelength conversion apparatus, optical parametric amplifier, transmission apparatus, and optical transmission system (2020-09-22),
11. 10754224 - Wavelength conversion device, transmission device, and transmission system (2020-08-25),
12. 10644823 - Optical transfer system, control device, optical transfer method, and transfer device (2020-05-05),
13. 10634974 - Wavelength converter, wavelength conversion method, and transmission device (2020-04-28),
14. 9991985 - Optical transmission control device and optical signal wavelength determination method (2018-06-05),
15. 9887778 - Optical amplifier, optical transmission apparatus, and optical repeating apparatus (2018-02-06),

Title: Tomoaki Takeyama: Pioneering Inventor from Yokohama

Introduction: Tomoaki Takeyama is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Takeyama's latest patents include cutting-edge advancements in artificial intelligence, robotics, and renewable energy technologies, showcasing his commitment to pushing the boundaries of scientific discovery.

Career Highlights: With a career spanning over two decades, Takeyama has worked with leading research institutions and tech companies to develop innovative solutions that have revolutionized various industries. His expertise in patent law has also led to the successful protection of his intellectual property.

Collaborations: Takeyama has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of creativity and excellence in all his projects. His partnerships have resulted in the development of award-winning products and technologies.

Conclusion: Tomoaki Takeyama's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor in Yokohama and beyond. His contributions continue to inspire future generations of inventors to push the boundaries of what is possible in the world of technology.

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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