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For the Inventor, By the Inventor

Kawasaki, Japan

Hiroki Okushima

This inventor holds 4 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1991-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroki Okushima. Retrieved from https://idiyas.com/inventor/hiroki-okushima

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

USPTO Granted Patents = 4

% Patents Active = 75.0

Average Co-Inventor Count = 1.5

ph-index = 3

Forward Citations = 37(Granted Patents)


Location History:

  • Yokohama, JP (1991)
  • Kawasaki, JP (1993 - 2006)

Company Filing History:

goldMedal4 out of 39,374 
 
Fujitsu Corporation
 patents

Years Active: 1991-2006

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4 patents (USPTO):Explore Patents
1. 7150570 - Module (2006-12-19),
2. 5664038 - Optical waveguide structure as well as optical wave branching unit, (1997-09-02),
3. 5259044 - Mach-Zehnder optical modulator with monitoring function of output light (1993-11-02),
4. 5033052 - Optical semiconductor device and production method thereof (1991-07-16),

Title: Hiroki Okushima: Innovator in Optical Technologies

Introduction

Hiroki Okushima is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical technologies, holding a total of 4 patents. His work focuses on innovative solutions that enhance optical communication systems.

Latest Patents

One of Okushima's latest patents is a module designed for insertion and withdrawal into a mounting device. This module features a tab that disengages a latch upon being pulled in the withdrawing direction. The design includes a case with openings on both sides, allowing a nail to engage the latch effectively. Another notable patent is for an optical waveguide structure suitable for wavelength division multiplex transmission systems. This invention allows for high-performance wavelength separation with reduced light propagation loss, achieved through a simple production process.

Career Highlights

Hiroki Okushima is currently employed at Fujitsu Corporation, where he continues to develop cutting-edge technologies. His work has been instrumental in advancing optical communication systems, making them more efficient and reliable.

Collaborations

Okushima has collaborated with notable colleagues, including Tadao Shingyoji and Kaoru Moriya. These partnerships have fostered innovation and contributed to the success of various projects within the company.

Conclusion

Hiroki Okushima's contributions to optical technologies and his innovative patents reflect his expertise and dedication to advancing the field. His work at Fujitsu Corporation continues to influence the future of optical communication systems.

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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