Wataru Imajuku

This inventor holds 16 USPTO granted patents and 2 published patent applications, plus 3 CIPO patents and 2 EPO patents. Top assignee: Nippon Telegraph and Telephone Corporation. Active years: 2002-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Wataru Imajuku. Retrieved from https://idiyas.com/inventor/wataru-imajuku

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

USPTO Granted Patents = 16 (Patent Applications = 2)

% Patents Active = 37.5

CIPO Patents = 3 (Patent Applications = 4)

EPO Patents = 2 (Patent Applications = 1)

Average Co-Inventor Count = 3.8

ph-index = 6

Forward Citations = 80(Granted Patents)

Location History:

Tokyo, JP (2002 - 2006)
Yokohama, JP (2003 - 2008)
Kanagawa, JP (2012)
Yokosuka, JP (2019 - 2021)

Company Filing History:

16 out of 5,300

Nippon Telegraph and Telephone Corporation

patents

Years Active: 2002-2021

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11108208 - Optical amplification system and optical amplification method (2021-08-31),

2. 10686520 - Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method (2020-06-16),

3. 10615868 - Communication system and fault detection method (2020-04-07),

4. 10527781 - Communication system and connector (2020-01-07),

5. 10511381 - Communication system and fault location specifying method (2019-12-17),

6. 8134920 - Device and method for correcting a path trouble in a communication network (2012-03-13),

7. 7333424 - Upper layer node, lower layer node, and node control method (2008-02-19),

8. 7313328 - Node used in photonic network, and photonic network (2007-12-25),

9. 7313094 - Node, an optical/electrical path integrated network using the node, and a program which controls the node (2007-12-25),

10. 7289730 - Optical path communication network, node, and optical path setup method (2007-10-30),

11. 7023887 - Method and system for controlling optical wavelength based on optical frequency pulling (2006-04-04),

12. 7012740 - Optical parametric circuit (2006-03-14),

13. 6909732 - Method and apparatus for controlling optical wavelength based on optical frequency pulling (2005-06-21),

14. 6867903 - Optical parametric circuit (2005-03-15),

15. 6560007 - Bit-phase synchronized optical pulse stream local generator (2003-05-06),

Title: Wataru Imajuku: Innovator in Optical Amplification Technologies

Introduction

Wataru Imajuku is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of optical amplification, holding a total of 16 patents. His work focuses on enhancing communication technologies through innovative optical systems.

Latest Patents

Imajuku's latest patents include an optical amplification system and method. This system features three or more nodes and utilizes a multi-core fiber with multiple cores. The design incorporates an amplification light input unit that feeds amplification light into one of the cores. An amplification unit is responsible for amplifying communication light transmitted through the fiber, ensuring high-quality transmission. Another notable patent is a transmission quality estimation system, which includes a device that estimates transmission quality based on measurement light dropped by a core connection unit.

Career Highlights

Wataru Imajuku is affiliated with Nippon Telegraph and Telephone Corporation, where he has been instrumental in advancing optical communication technologies. His innovative approaches have led to significant improvements in transmission quality and system efficiency.

Collaborations

Imajuku has collaborated with notable colleagues, including Eiji Oki and Takuya Oda. Their combined expertise has contributed to the development of cutting-edge technologies in the field.

Conclusion

Wataru Imajuku's work in optical amplification systems and transmission quality estimation has positioned him as a key figure in the advancement of communication technologies. His contributions continue to influence the industry and pave the way for future innovations.

Profile summary based on public USPTO records.