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For the Inventor, By the Inventor

Yokohama, Japan

Tomoyuki Tsujimura

This inventor holds 16 USPTO granted patents and 1 published patent application, primarily in Solid State Batteries. Top assignees: Samsung Electronics Co., Ltd., Massachusetts Institute of Technology, Samsung Electronics Ltd.. Active years: 2018-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoyuki Tsujimura. Retrieved from https://idiyas.com/inventor/tomoyuki-tsujimura

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

Calculating rank
USPTO Granted Patents = 16 

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Kanagawa-ken, JP (2023)
  • Yokohama, JP (2018 - 2024)
  • Kanagawa, JP (2020 - 2024)

Company Filing History:

goldMedal14 out of 132,108 
 
Samsung Electronics Co., Ltd.
 patents
silverMedal3 out of 8,600 
 
Massachusetts Institute of Technology
 patents
bronzeMedal2 out of 6,542 
 
Samsung Electronics Ltd.
 patents
4. 1 out of 1,054 
 
Tohoku University
 patents
5. 1 out of 16,048 
 
University of California
 patents
where one patent can have more than one assignee

Years Active: 2018-2026

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Areas of Expertise:
Solid Electrolytes
Lithium Batteries
Cathode Materials
Electrochemical Cells
Sulfide-Based Electrolytes
Phase-Transition Materials
All-Solid Batteries
Composite Materials
Ion Conductors
Preparation Methods
Secondary Batteries
16 patents (USPTO):Explore Patents
1. 12580182 - Coated cathode active material, method of preparing the same, and cathode and non-aqueous electrolyte secondary battery each including the same (2026-03-17),
2. 12573618 - All-solid secondary battery and method of preparing the same (2026-03-10),
3. 11984552 - Phase-transition solid electrolyte material and all solid secondary battery including the same (2024-05-14),
4. 11961962 - Solid ion conductor compound, solid electrolyte including the same, electrochemical cell including the same, and preparation method thereof (2024-04-16),
5. 11955602 - Solid electrolyte and lithium battery including the same (2024-04-09),
6. 11799126 - Method of preparing solid electrolyte and all-solid battery including solid electrolyte prepared by the method (2023-10-24),
7. 11742478 - All-solid secondary battery and method of preparing the same (2023-08-29),
8. 11605812 - All-solid secondary battery and method of preparing the same (2023-03-14),
9. 11532813 - Composite cathode active material, preparation method thereof, cathode layer including the same, and all-solid secondary battery including the cathode layer (2022-12-20),
10. 11245131 - Solid electrolyte and lithium battery including the same (2022-02-08),
11. 11217785 - Composite cathode active material and secondary battery including the same (2022-01-04),
12. 11127974 - Method of preparing sulfide-based solid electrolyte, sulfide-based solid electrolyte prepared therefrom, and solid secondary battery including the sulfide electrolyte (2021-09-21),
13. 10930927 - Positive electrode active material, methods for the manufacture thereof, and electrochemical cell comprising the positive electrode active material (2021-02-23),
14. 10811726 - Solid electrolyte for all-solid lithium secondary battery, all-solid lithium secondary battery, and method of preparing the solid electrolyte (2020-10-20),
15. 10446872 - Solid electrolyte and lithium battery including the same (2019-10-15),

Title: Tomoyuki Tsujimura: A Pioneer in Solid-State Battery Innovations

Introduction

Tomoyuki Tsujimura is an accomplished inventor based in Yokohama, Japan. With a remarkable portfolio of 14 patents, Tsujimura has made significant advancements in the field of solid-state battery technology. His work focuses on materials that enhance the efficiency and performance of batteries, contributing to the future of energy storage.

Latest Patents

Among his latest patents is the invention of a phase-transition solid electrolyte material, specifically designed for all-solid secondary batteries. This innovative battery architecture consists of a cathode layer with a cathode active material, an anode layer, and a solid electrolyte layer sandwiched in between. Notably, at least one of these layers incorporates a phase-transition solid electrolyte material that undergoes a phase change upon heating. This transition affects ionic conductivity, allowing the battery to operate more efficiently.

Another significant patent involves a solid ion conductor compound that includes lithium (Li), holmium (Ho), and a halogen element. This compound exhibits distinctive diffraction peaks, making it ideal for use in electrochemical cells. The preparation method outlined in this patent emphasizes the advancement of solid electrolytes in enhancing battery performance.

Career Highlights

Throughout his distinguished career, Tsujimura has worked with leading organizations, most notably at Samsung Electronics Co., Ltd. and the Massachusetts Institute of Technology (MIT). His experiences have equipped him with a deep understanding of battery technologies and materials science, positioning him as a leader in innovation within the field.

Collaborations

In his journey, Tsujimura has teamed up with prominent colleagues, including Yuichi Aihara and Naoki Suzuki. These collaborations have played a vital role in the development and refinement of his patented technologies, further fostering a spirit of innovation.

Conclusion

Tomoyuki Tsujimura's contributions to solid-state battery technology have established him as a noteworthy inventor in the battery industry. His groundbreaking patents and collaborations with esteemed organizations underscore the importance of innovative thinking in addressing the challenges of energy storage. With each advancement, Tsujimura paves the way for a more sustainable and efficient future in battery 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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