Tama, Japan

Hisashi Taketomi

This inventor holds 3 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1999-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisashi Taketomi. Retrieved from https://idiyas.com/inventor/hisashi-taketomi

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


% Patents Active = 33.3

Average Co-Inventor Count = 2.0

ph-index = 2

Forward Citations = 32(Granted Patents)


Location History:

  • Kawasaki, JP (1999 - 2006)
  • Tama, JP (2014)

Company Filing History:


Years Active: 1999-2014

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3 patents (USPTO):Explore Patents

Title: Hisashi Taketomi: Innovator in Optical Communication Technology

Introduction

Hisashi Taketomi is a prominent inventor based in Tama, Japan. He has made significant contributions to the field of optical communication technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and functionality of optical systems.

Latest Patents

One of Hisashi Taketomi's latest patents is an optical cross-connect apparatus. This apparatus includes a plurality of switch units connected via input and output ports. It features a storage unit that maintains a setting table, associating output port information with corresponding input port information for each optical signal. The setting processor adjusts each switch unit according to the setting table, allowing for wavelength settings for optical signals. Additionally, an update processor modifies the setting table content based on external input.

Another notable patent is a communication system designed for efficient WDM optical communications. This system variably sets supervisory control channels, which include a first optical supervisory channel outside the main optical signals' transmission band and a second supervisory channel within an idle band of the main optical signals. The system also incorporates a WDM transmitting unit for wavelength-multiplexing and -demultiplexing the supervisory control channels and main optical signals.

Career Highlights

Hisashi Taketomi is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical communications. His work has been instrumental in advancing technologies that improve communication systems.

Collaborations

Throughout his career, Taketomi has collaborated with notable colleagues, including Fumihiro Ikawa and Kanji Naito. These partnerships have contributed to the development of cutting-edge technologies in optical communication.

Conclusion

Hisashi Taketomi's contributions to optical communication technology are significant and impactful. His innovative patents and collaborations reflect his dedication to advancing the field. His work continues to influence the future of optical systems and communication technologies.

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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