Kenji Hiruma

This inventor holds 16 USPTO granted patents, primarily in Semiconductor Devices. Top assignees: Hitachi, Ltd., Hitachi Vlsi Engineering Corp., Hitachi, Ltd. Hitachi Cabel. Active years: 1988-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Hiruma. Retrieved from https://idiyas.com/inventor/kenji-hiruma

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

Calculating rank

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 9

Forward Citations = 474(Granted Patents)

Location History:

Kokubunji, JP (1988)
Tokorozawa, JP (1994 - 1997)
Koganei, JP (1988 - 2002)

Company Filing History:

Hitachi Vlsi Engineering Corp.

patents

1 out of 1

Hitachi, Ltd. Hitachi Cabel

patent

where one patent can have more than one assignee

Years Active: 1988-2002

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Areas of Expertise:

Semiconductor

Optical Modulator

Light Emitting Device

Waveguide Switches

Heterojunction

Nanowhiskers

Strained Superlattice

Distributed Feedback Laser

Solid Film Growth

Two-Dimensional Electron Gas

Contact Resistance

Heteroepitaxial Growth

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6356572 - Semiconductor light emitting device (2002-03-12),

2. 5701019 - Semiconductor device having first and second stacked semiconductor (1997-12-23),

3. 5381027 - Semiconductor device having a heterojunction and a two dimensional gas (1995-01-10),

4. 5362972 - Semiconductor device using whiskers (1994-11-08),

5. 5351128 - Semiconductor device having reduced contact resistance between a channel (1994-09-27),

6. 5332910 - Semiconductor optical device with nanowhiskers (1994-07-26),

7. 5258631 - Semiconductor device having a two-dimensional electron gas as an active (1993-11-02),

8. 5025751 - Solid film growth apparatus (1991-06-25),

9. 4933728 - Semiconductor optical device (1990-06-12),

10. 4847573 - Optical modulator (1989-07-11),

11. 4835583 - Semiconductor device having strained superlattice buffer layers with (1989-05-30),

12. 4784451 - Waveguide optical switches (1988-11-15),

13. 4775980 - Distributed-feedback semiconductor laser device (1988-10-04),

14. 4766092 - Method of growing heteroepitaxial InP on Si using Sn substrate (1988-08-23),

15. 4737015 - Optical waveguide having a silicon oxi-nitride layer (1988-04-12),

Title: Kenji Hiruma - Pioneering Japanese Inventor

Introduction: Kenji Hiruma is a distinguished inventor hailing from Koganei, Japan. With a passion for innovation and a keen eye for detail, he has made significant contributions to the field of technology through his groundbreaking inventions.

Latest Patents: Kenji Hiruma holds several patents in various technological domains, showcasing his versatility and expertise in inventing cutting-edge solutions to real-world problems.

Career Highlights: Throughout his illustrious career, Kenji Hiruma has consistently pushed the boundaries of technological advancement. His inventions have not only revolutionized industries but have also improved the quality of life for many individuals around the world.

Collaborations: Kenji Hiruma has collaborated with leading research institutions, universities, and tech companies to further his research and bring his inventions to life. His collaborative efforts have led to the development of innovative products that have had a lasting impact on society.

Conclusion: In conclusion, Kenji Hiruma stands as a testament to the power of innovation and dedication. His pioneering spirit and relentless pursuit of excellence have solidified his position as a prominent figure in the world of inventors. Kenji Hiruma's legacy will continue to inspire future generations of inventors to push the boundaries of what is possible through innovation and creativity.

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]