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For the Inventor, By the Inventor

Kawasaki, Japan

Kiyohide Wakao

This inventor holds 5 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1988-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyohide Wakao. Retrieved from https://idiyas.com/inventor/kiyohide-wakao

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 44(Granted Patents)


Location History:

  • Atsugi, JP (1988)
  • Kawasaki, JP (1993 - 1999)

Company Filing History:

goldMedal5 out of 39,374 
 
Fujitsu Corporation
 patents

Years Active: 1988-1999

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5 patents (USPTO):Explore Patents
1. 5987044 - Semiconductor light source system having an optimized setting for (1999-11-16),
2. 5715075 - Optical processing device operating in a wavelength-synchronized mode (1998-02-03),
3. 5657144 - Optical processing device operating in a wavelength-synchronized mode (1997-08-12),
4. 5179615 - Optical waveguide having a variable refractive index and an optical (1993-01-12),
5. 4726031 - Semiconductor laser (1988-02-16),

Title: Kiyohide Wakao: Innovator in Semiconductor Technology

Introduction

Kiyohide Wakao is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His work focuses on optimizing light source systems and optical processing devices, showcasing his expertise in innovative solutions.

Latest Patents

Wakao's latest patents include a semiconductor light source system that operates effectively in variable temperature environments. This system features a laser diode and a driver circuit that ensures the signal current supplied to the laser diode remains below an upper limit corresponding to its maximum operational temperature. Additionally, the driver circuit is designed to achieve a sufficient extinction ratio in the output optical beam while minimizing oscillation delay in the laser diode.

Another notable patent is an optical processing device that operates in a wavelength-synchronized mode. This device is capable of converting the wavelength of an optical signal by utilizing an optical processing unit that selects and outputs optical signals with specified wavelengths. The control unit plays a crucial role in managing the selection process, ensuring precision in the output.

Career Highlights

Kiyohide Wakao is currently employed at Fujitsu Corporation, where he continues to push the boundaries of semiconductor technology. His innovative work has positioned him as a key figure in the industry, contributing to advancements that enhance the performance and efficiency of optical systems.

Collaborations

Wakao collaborates with esteemed colleagues such as Kazuhiro Tanaka and Hiroyuki Nobuhara. Their combined expertise fosters a creative environment that drives innovation and leads to groundbreaking developments in their field.

Conclusion

Kiyohide Wakao's contributions to semiconductor technology and optical processing devices highlight his role as a leading inventor. His patents reflect a commitment to innovation and excellence, making a lasting impact on the industry.

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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