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For the Inventor, By the Inventor

Kawasaki, Japan

Yasunori Nagakubo

This inventor holds 15 USPTO granted patents, primarily in Optical Communication. Top assignee: Fujitsu Corporation. Active years: 1996-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasunori Nagakubo. Retrieved from https://idiyas.com/inventor/yasunori-nagakubo

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

Calculating rank
USPTO Granted Patents = 15

% Patents Active = 66.7

Average Co-Inventor Count = 2.7

ph-index = 8

Forward Citations = 211(Granted Patents)


Location History:

  • Yokohama, JP (2001)
  • Kawasaki, JP (1996 - 2012)

Company Filing History:

goldMedal15 out of 39,381 
 
Fujitsu Corporation
 patents

Years Active: 1996-2012

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Areas of Expertise:
Optical System
Optical Module
Threshold Setting
Optical Receiver
Bias Voltage Control
Laser Diode
Peltier Control
Optical Amplifier
Transmission Apparatus
Control Method
15 patents (USPTO):Explore Patents
1. 8280662 - Optical system, optical module and threshold setting method (2012-10-02),
2. 7970291 - Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus (2011-06-28),
3. 7648289 - Module having a handle to be operated to attach the module to a cage (2010-01-19),
4. 7257332 - Optical transmitter and its control method (2007-08-14),
5. 7031621 - Optical receiving device (2006-04-18),
6. 6229833 - Laser diode protecting circuit and laser driving current control circuit (2001-05-08),
7. 6040931 - Optical transmitter, terminal-station apparatus having the optical (2000-03-21),
8. 5973812 - Optical transmitter and optical communication system (1999-10-26),
9. 5966938 - Peltier control circuit and a peltier device structure (1999-10-19),
10. 5900959 - Optical transmitter, optical communication system and optical (1999-05-04),
11. 5900621 - Light transmitter having an automatic bias control circuit (1999-05-04),
12. 5736875 - Discrimination circuit capable of automatically optimizing (1998-04-07),
13. 5680246 - Optical amplifier and optical transmission apparatus (1997-10-21),
14. 5548435 - Optical Transmitter (1996-08-20),
15. 5515682 - Peltier control circuit and a peltier device structure (1996-05-14),

Title: Yasunori Nagakubo: Innovator in Optical Systems

Introduction

Yasunori Nagakubo is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical systems, holding a total of 15 patents. His work focuses on enhancing the efficiency and accuracy of optical modules and related technologies.

Latest Patents

Nagakubo's latest patents include an innovative optical system and an optical module that features a threshold setting method. This optical system comprises an optical module with an optical reception unit that receives input light and outputs an electric signal related to the received input light. Additionally, it includes a processing unit with an identification unit that performs identification processing based on a threshold value derived from the electric signal. The optical module is designed to optimize the threshold value when the identifier is connected to the optical module. Another notable patent involves an optical-receiving apparatus that utilizes an avalanche photodiode (APD) to convert input light into an electric signal. This apparatus includes a bias-voltage-control method that maintains the multiplication factor of the APD at a predetermined level, ensuring accurate monitoring of input light intensity despite changes in ambient temperature.

Career Highlights

Yasunori Nagakubo is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical technologies. His work has significantly impacted the development of advanced optical systems, making them more efficient and reliable.

Collaborations

Nagakubo has collaborated with notable colleagues, including Takashi Tsuda and Setsuo Misaizu, contributing to various projects that enhance optical technology.

Conclusion

Yasunori Nagakubo's contributions to optical systems and modules demonstrate his commitment to innovation in technology. His patents reflect a deep understanding of the complexities involved in optical engineering, positioning him as a key figure in this field.

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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