Kanagawa, Japan

Akihiko Yamagata

This inventor holds 20 USPTO granted patents and 2 published patent applications and 1 EPO patent, primarily in Integrated Circuit Technology. Top assignees: Sony Corporation, Sony Group Corporation. Active years: 2005-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiko Yamagata. Retrieved from https://idiyas.com/inventor/akihiko-yamagata

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

USPTO Granted Patents = 20 

% Patents Active = 60.0

 

Average Co-Inventor Count = 3.0

ph-index = 6

Forward Citations = 74(Granted Patents)


Location History:

  • Tokyo, JP (2014)
  • Kanagawa, JP (2005 - 2022)

Company Filing History:


Years Active: 2005-2022

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Areas of Expertise:
Integrated Circuit
Information Processing
Memory Management
Mobile Terminal
Communication Method
Non-Contact Reader
Power-Supply Management
Electronic Circuit
Data Communication
Modulation Method
Chip Technology
Service Providing
20 patents (USPTO):Explore Patents

Title: Akihiko Yamagata: Innovator in Integrated Circuit Technologies

Introduction: Akihiko Yamagata is a notable inventor based in Kanagawa, Japan, who has made significant contributions to the field of integrated circuit technologies. With a remarkable portfolio of 20 patents, Yamagata has demonstrated a commitment to innovation and technological advancement.

Latest Patents: Among his latest inventions, Yamagata developed an IC chip and an information processing terminal. This invention allows an IC card to initiate communication with a card reading and writing apparatus through a wireless interface as soon as it is placed over the apparatus. This seamless communication enables changes in the internal state of the IC card to be reported to external devices, allowing specific applications to be activated or deactivated. Additionally, he has created an integrated circuit device and developed a memory management method, where memory regions on the IC card are organized hierarchically. Each application is managed in directory units, and access rights are controlled effectively based on personal identification codes, ensuring that if a mobile terminal is lost, access rights to applications are automatically revoked.

Career Highlights: Akihiko Yamagata has had an illustrious career working with industry giants such as Sony Corporation and Sony Group Corporation. His roles within these companies have enabled him to stay at the forefront of technology and innovation, contributing to the development of advanced integrated circuit solutions.

Collaborations: Throughout his career, Yamagata has enjoyed fruitful collaborations with distinguished professionals in his field, including Shigeru Arisawa and Akira Fukada. Working alongside such talented individuals has further enriched his contributions to technology and innovation.

Conclusion: Akihiko Yamagata stands out as a leading inventor whose work in integrated circuits and memory management has made a lasting impact. His latest patents highlight his innovative approach to solving complex problems, reinforcing his reputation as a key figure in the field of technology.

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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