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For the Inventor, By the Inventor

Kawasaki, Japan

Keiichiro Tsukamoto

This inventor holds 8 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 2001-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiichiro Tsukamoto. Retrieved from https://idiyas.com/inventor/keiichiro-tsukamoto

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

Calculating rank
USPTO Granted Patents = 8

% Patents Active = 62.5

Average Co-Inventor Count = 1.5

ph-index = 3

Forward Citations = 60(Granted Patents)


Location History:

  • Kanagawa, JP (2001)
  • Kawasaki, JP (2001 - 2011)

Company Filing History:

goldMedal8 out of 39,378 
 
Fujitsu Corporation
 patents

Years Active: 2001-2011

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8 patents (USPTO):Explore Patents
1. 7912096 - Add/drop multiplexer and interface (2011-03-22),
2. 7672341 - Transmission apparatus and reception interface apparatus (2010-03-02),
3. 7417878 - Distributed power supply and method of recovering from error (2008-08-26),
4. 7154894 - ATM cell service apparatus accomodating an ATM cell in an optical asynchronous communications network through a North America asynchronous communications network (2006-12-26),
5. 6657953 - Signal loopback device (2003-12-02),
6. 6498794 - Transmitter with cell switching function (2002-12-24),
7. 6192437 - Transmission apparatus with control circuit/relay within each card providing connection to related card output depending on related slot ID/ redundancy/non-redundancy, working/protection signals (2001-02-20),
8. 6188701 - Apparatus and method for interfacing between communication networks (2001-02-13),

Title: Innovations of Keiichiro Tsukamoto

Introduction

Keiichiro Tsukamoto is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of telecommunications, holding a total of 8 patents. His work primarily focuses on advanced signal processing technologies that enhance communication systems.

Latest Patents

One of Tsukamoto's latest innovations is an add/drop multiplexer. This device features a first signal converter that transforms first-low-order-group signals from a DSn network into high-order-group signals for transfer to an SDH (SONET) network. It also allows for the addition of second-low-order-group signals, which have a slower transmission speed. Another notable patent is a transmission apparatus and reception interface apparatus. This ADM apparatus includes multiple synchronism sections that detect the synchronism of reception frames and a fault information detection section that identifies fault information in the overhead of the first frame.

Career Highlights

Tsukamoto is currently employed at Fujitsu Corporation, where he continues to innovate in the telecommunications sector. His work has been instrumental in developing technologies that improve data transmission and reception capabilities.

Collaborations

Throughout his career, Tsukamoto has collaborated with notable colleagues, including Akihiko Oka and Hideaki Arao. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Keiichiro Tsukamoto's contributions to telecommunications through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of advanced 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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