Oita, Japan

Tatsumi Ishihara

This inventor holds 4 USPTO granted patents. Top assignees: Mitsubishi Materials Corporation, Nkk Corporation, Tatsumi Ishihara. Active years: 1997-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsumi Ishihara. Retrieved from https://idiyas.com/inventor/tatsumi-ishihara-pgapyeel

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 27(Granted Patents)


Location History:

  • Oita, JP (1997 - 2000)
  • Oita-shi, Oita JP (2003 - 2005)

Company Filing History:


Years Active: 1997-2005

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4 patents (USPTO):Explore Patents

Title: Innovations of Tatsumi Ishihara

Introduction

Tatsumi Ishihara is a notable inventor based in Oita, Japan. He has made significant contributions to the field of materials science, particularly in the development of oxide-ion conductors. With a total of 4 patents to his name, Ishihara's work has garnered attention for its potential applications in various technologies.

Latest Patents

Ishihara's latest patents focus on an oxide-ion conductor characterized by the formula LnAGaB1B2oxide. In this formula, Ln represents elements such as La, Ce, Pr, Nd, and Sm. The element A includes Sr, Ca, and Ba, while B1 consists of Mg, Al, and In, and B2 includes Co, Fe, Ni, and Cu. The parameters x, y, and z are defined within specific ranges, ensuring the oxide-ion conductor exhibits superior conductivity compared to stabilized zirconia. This innovation demonstrates excellent heat resistance and maintains high ion conductivity even at low temperatures, along with a low oxygen-partial-pressure dependence of ion conductivity.

Career Highlights

Throughout his career, Tatsumi Ishihara has worked with prominent companies, including Mitsubishi Materials Corporation. His expertise in materials science has led to advancements in the field, particularly in the development of innovative materials that enhance performance in various applications.

Collaborations

Ishihara has collaborated with notable colleagues such as Yusaku Takita and Tohru Shiomitsu. These partnerships have contributed to the success of his research and the development of his patented technologies.

Conclusion

Tatsumi Ishihara's contributions to the field of materials science, particularly through his innovative oxide-ion conductors, highlight his role as a significant inventor. His work continues to influence advancements in technology and materials engineering.

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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