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For the Inventor, By the Inventor

Atsugi, Japan

Ryuzo Iga

This inventor holds 10 USPTO granted patents and 1 EPO patent. Top assignee: Nippon Telegraph and Telephone Corporation. Active years: 1993-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryuzo Iga. Retrieved from https://idiyas.com/inventor/ryuzo-iga

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

USPTO Granted Patents = 10

% Patents Active = 100.0


Average Co-Inventor Count = 3.8

ph-index = 4

Forward Citations = 46(Granted Patents)


Location History:

  • Yokohama, JP (1993)
  • Kanagawa, JP (2004 - 2006)
  • Atsugi, JP (2004 - 2010)

Company Filing History:

goldMedal10 out of 5,300 
 
Nippon Telegraph and Telephone Corporation
 patents

Years Active: 1993-2010

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10 patents (USPTO):Explore Patents
1. 7701993 - Semiconductor optical device and a method of fabricating the same (2010-04-20),
2. 7355778 - Semiconductor optical modulator (2008-04-08),
3. 7060518 - Semiconductor optical device and the fabrication method (2006-06-13),
4. 6990131 - Semiconductor optical device and method of manufacturing the same (2006-01-24),
5. 6982469 - Semiconductor optical device and the fabrication method (2006-01-03),
6. 6815786 - Semiconductor optical device and method of manufacturing the same (2004-11-09),
7. 6717187 - Semiconductor optical device and the fabrication method (2004-04-06),
8. 6692837 - Semi-insulating substrate, semiconductor optical device and fabrication method of semiconductor thin film (2004-02-17),
9. 5273932 - Method for forming semiconductor thin films where an argon laser is used (1993-12-28),
10. 5186750 - Method and apparatus for forming semiconductor thin films (1993-02-16),

Title: Ryuzo Iga: Innovator in Semiconductor Technology

Introduction

Ryuzo Iga is a prominent inventor based in Atsugi, Japan, known for his significant contributions to semiconductor technology. He holds a total of 10 patents, showcasing his expertise and innovative spirit in the field.

Latest Patents

Iga's latest patents include a semiconductor optical device and a method of fabricating the same. This invention aims to provide excellent device characteristics while enhancing fabrication yield and run-to-run reproducibility in a buried device structure. The design involves a cross-sectional configuration that ensures crystal quality in the contact layer. Another notable patent is the semiconductor optical modulator, which serves primarily in optical communications and information processing systems. This device features a unique structure that allows for low-voltage operation and minimal waveguide loss.

Career Highlights

Ryuzo Iga is currently associated with Nippon Telegraph and Telephone Corporation, where he continues to push the boundaries of semiconductor technology. His work has been instrumental in advancing optical devices that are crucial for modern communication systems.

Collaborations

Iga has collaborated with notable colleagues, including Yasuhiro Kondo and Matsuyuki Ogasawara, contributing to various innovative projects in the semiconductor field.

Conclusion

Ryuzo Iga's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the industry. His work continues to influence advancements in optical communication systems and semiconductor devices.

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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