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For the Inventor, By the Inventor

Atsugi, Japan

Kazumasa Takabayashi

This inventor holds 35 USPTO granted patents and 2 published patent applications and 2 EPO patents, primarily in Optical Devices. Top assignees: Fujitsu Corporation, Fujitsu Optical Components Limited, Eudyna Devices Inc.. Active years: 2005-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumasa Takabayashi. Retrieved from https://idiyas.com/inventor/kazumasa-takabayashi

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

Calculating rank
USPTO Granted Patents = 35 

% Patents Active = 65.7


Average Co-Inventor Count = 1.7

ph-index = 5

Forward Citations = 89(Granted Patents)


Location History:

  • Kanagawa, JP (2011)
  • Kawasaki, JP (2005 - 2017)
  • Atsugi, JP (2014 - 2024)

Company Filing History:

goldMedal30 out of 39,378 
 
Fujitsu Corporation
 patents
silverMedal5 out of 250 
 
Fujitsu Optical Components Limited
 patents
bronzeMedal1 out of 86 
 
Eudyna Devices Inc.
 patents
where one patent can have more than one assignee

Years Active: 2005-2025

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Areas of Expertise:
Wavelength Filter
Tunable Laser
Optical Amplifier
Semiconductor Laser
Optical Communication
Integrated Photonic Device
Optical Receiver
Optical Module
Light Modulation
Multi-Wavelength Laser
Optical Waveguide
Light Receiving Element
35 patents (USPTO):Explore Patents
1. 12326642 - Wavelength filter and laser apparatus (2025-06-10),
2. 12300973 - Integrated photonic device and photonic integrated circuit using the same (2025-05-13),
3. 12047121 - Optical device, optical transmission apparatus, optical reception apparatus, and optical communication apparatus (2024-07-23),
4. 11984696 - Optical amplifier and inspection method of optical amplifier (2024-05-14),
5. 10560213 - Optical device (2020-02-11),
6. 10530119 - Wavelength locker, wavelength tunable laser apparatus, and method for controlling wavelength tunable laser apparatus (2020-01-07),
7. 10312663 - Tunable laser device (2019-06-04),
8. 10027088 - Integrated semiconductor optical element and manufacturing method for same (2018-07-17),
9. 9966724 - Laser and method of controlling laser (2018-05-08),
10. 9948059 - Semiconductor laser light source and fabrication method (2018-04-17),
11. 9793684 - Laser apparatus (2017-10-17),
12. 9762034 - Tunable laser source, optical transmitter, and optical transmitter and receiver module (2017-09-12),
13. 9722397 - Tunable laser and tunable laser module (2017-08-01),
14. 9711938 - Integrated semiconductor optical element and manufacturing method for same (2017-07-18),
15. 9705282 - Multi-wavelength laser light source and wavelength multiplexing communication system (2017-07-11),

Title: Kazumasa Takabayashi: Pioneering Inventor from Atsugi

Introduction: Kazumasa Takabayashi is a renowned inventor hailing from Atsugi, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Kazumasa Takabayashi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his innovative spirit and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Takabayashi has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in the industry.

Collaborations: Throughout his career, Kazumasa Takabayashi has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge exchange.

Conclusion: Kazumasa Takabayashi's dedication to pushing the boundaries of technology and his passion for creating solutions to complex challenges have solidified his reputation as a trailblazing inventor in Atsugi and beyond.

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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