Akio Tajima

This inventor holds 91 USPTO granted patents and 9 published patent applications, plus 1 CIPO patent and 8 EPO patents, primarily in Optical Network Management (CPC class H04J14-0256). Top assignees: Nec Corporation, Seikosha Co., Ltd., Kwansei Gakuin Educational Foundation. Active years: 1987-2025.

USPTO Granted Patents = 91 (Patent Applications = 9)

% Patents Active = 90.1

CIPO Patents = 1

EPO Patents = 8 (Patent Applications = 3)

Average Co-Inventor Count = 2.7

ph-index = 12

Forward Citations = 560(Granted Patents)

Forward Citations (Not Self Cited) = 527(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Minato-ku, JP (2011)
Chiba, JP (2023)
Tokyo, JP (1987 - 2024)

Company Filing History:

Kwansei Gakuin Educational Foundation

Sk Materials Jnc Co., Ltd.

patents

6. 1 out of 1,328

Japan Science and Technology Agency

where one patent can have more than one assignee

Years Active: 1987-2025

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Areas of Expertise:

Optical Network

Encryption Key Generation

Random Number Quality

Optical Node Device

Path Setting Method

Optical Communication

Cryptographic Key

Multi-Layer Network

Optical Path Control

Quantum Key Distribution

Optical Frequency Band

91 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12407613 - Encryption key generation (2025-09-02),

2. 12289568 - Optical network management apparatus and method of allocating optical frequency band (2025-04-29),

3. 12170539 - Optical network system, optical node device, and optical network control method (2024-12-17),

4. 12124364 - Random number quality management method and apparatus (2024-10-22),

5. 12095507 - Multi-layer network system and path setting method in multi-layer network (2024-09-17),

6. 11909647 - Encryption key generation (2024-02-20),

7. 11736839 - Optical network management apparatus and method of allocating optical frequency band (2023-08-22),

8. 11695630 - Control device, control system, network system, control method, and computer-readable medium (2023-07-04),

9. 11652546 - Optical network system, optical node device, and optical network control method (2023-05-16),

10. 11600790 - Polycyclic aromatic compound for organic electroluminescent device (2023-03-07),

11. 11248009 - Polycyclic aromatic compound, material for an organic device, organic electroluminescent element, display apparatus and lighting apparatus (2022-02-15),

12. 11201668 - Optical network system, optical node device, and optical network control method (2021-12-14),

13. 11115318 - Optical network control devices and optical path setting method (2021-09-07),

14. 11109123 - Optical network management apparatus and method of allocating optical frequency band (2021-08-31),

15. 10938499 - Optical path controller and method of controlling optical path (2021-03-02),

Title: The Innovative Journey of Akio Tajima

Introduction: Akio Tajima is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to various fields through his inventive spirit and dedication to technological advancement.

Latest Patents: Akio Tajima holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to innovation.

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

Collaborations: Throughout his career, Akio Tajima has collaborated with top engineers, scientists, and designers both locally and internationally, fostering a culture of innovation and knowledge exchange that has led to numerous successful projects and inventions.

Conclusion: Akio Tajima's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor in the global technological landscape, with his work continuing to inspire future generations of inventors and innovators.