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For the Inventor, By the Inventor

Saitama, Japan

Hiroaki Inoue

This inventor holds 24 USPTO granted patents, primarily in Optical Communication. Top assignees: Hitachi, Ltd., Oclaro Japan, Inc., Hitachi Cable, Inc.. Active years: 1988-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Inoue. Retrieved from https://idiyas.com/inventor/hiroaki-inoue-chulhla8

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

USPTO Granted Patents = 24

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 10

Forward Citations = 236(Granted Patents)


Location History:

  • Hachiouji, JP (1989)
  • Hachioji, JP (1988 - 1990)
  • Hidaki, JP (1993)
  • Hidaka, JP (1995 - 2010)
  • Saitama, JP (1991 - 2021)

Company Filing History:

goldMedal19 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal3 out of 98 
 
Oclaro Japan, Inc.
 patents
bronzeMedal1 out of 836 
 
Hitachi Cable, Inc.
 patents
4. 1 out of 67 
 
Lumentum Japan, Inc.
 patents
5. 1 out of 134 
 
Opnext Japan, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1988-2021

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Areas of Expertise:
Optical Module
Semiconductor Laser
Optical Switch
Optical Transmitter
Optical Demultiplexing
Optical Device
Waveguide
Optical Amplifiers
Self-Routing Switch
Diffraction Gratings
Optical Modulator
Photo Semiconductor
24 patents (USPTO):Explore Patents
1. 10921517 - Electro-optic waveguide device and optical module (2021-02-16),
2. 10305599 - Optical transmitter module (2019-05-28),
3. 10181694 - Optical module (2019-01-15),
4. 9762026 - Optical module (2017-09-12),
5. 7833807 - Method of manufacturing semiconductor laser for communication, semiconductor laser for communication and optical transmission module (2010-11-16),
6. 5761352 - Optical switch having a two-level crossing between input/output optical (1998-06-02),
7. 5710847 - Semiconductor optical functional device (1998-01-20),
8. 5422968 - Optical demultiplexing system with optical amplifiers (1995-06-06),
9. 5422967 - Self-routing optical switch and optical switch array (1995-06-06),
10. 5394491 - Semiconductor optical switch and array of the same (1995-02-28),
11. 5339370 - Optical modulator and optical communication system utilizing the same (1994-08-16),
12. 5247592 - Semiconductor optical device and array of the same (1993-09-21),
13. 5208827 - Semiconductor laser device having a transparent waveguide and a large (1993-05-04),
14. 5146513 - Semiconductor optical device and array of the same (1992-09-08),
15. 5044745 - Semiconductor optical switch and array of the same (1991-09-03),

Title: Hiroaki Inoue: Innovator in Optical Technology

Introduction

Hiroaki Inoue, a prominent inventor based in Saitama, Japan, has made significant contributions to the field of optical technology. With a remarkable portfolio of 24 patents, Inoue has been at the forefront of developing innovative solutions that enhance optical devices and systems.

Latest Patents

Among his latest innovations, two notable patents stand out. The first is an Electro-optic waveguide device, which features a slot waveguide consisting of lower and upper high-refractive-index layers. These layers, equipped with conductivity, are positioned to create a gap accommodating a low-refractive-index layer that produces an electro-optic effect. This inventive structure enhances the interaction between optical signals, making it a crucial advancement in waveguide technology.

The second significant patent is his Optical transmitter module, designed for combining multiple optical signals while minimizing beat noise and chromatic dispersion. This module utilizes a wavelength multiplexer and a polarization multiplexer to effectively manage optical signals of varying intensities and wavelengths, resulting in improved performance for generating precision signals like PAM8.

Career Highlights

Hiroaki Inoue’s professional journey includes key roles in prestigious companies such as Hitachi, Ltd. and Oclaro Japan, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas, leading to the creation of groundbreaking technologies in the optical domain.

Collaborations

Inoue has also collaborated with notable colleagues, including Hiroyoshi Matsumura and Koji Ishida. These partnerships have played an integral role in his research and development endeavors, enabling the exchange of ideas and fostering innovation within the industry.

Conclusion

Hiroaki Inoue's contributions to optical technology through his patents reflect his dedication to innovation and excellence. As he continues to develop advanced solutions, his work stands as a testament to the potential of optical engineering in transforming communication and 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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