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For the Inventor, By the Inventor

Matsumoto, Japan

Tomofumi Yokoyama

This inventor holds 40 USPTO granted patents and 23 published patent applications and 9 EPO patents, primarily in Solid Electrolytes. Top assignee: Seiko Epson Corporation. Active years: 2016-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomofumi Yokoyama. Retrieved from https://idiyas.com/inventor/tomofumi-yokoyama

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

USPTO Granted Patents = 40 

% Patents Active = 97.5

 

Average Co-Inventor Count = 2.1

ph-index = 2

Forward Citations = 19(Granted Patents)


Location History:

  • Kai, JP (2016 - 2018)
  • Nagano, JP (2023)
  • Matsumoto, JP (2017 - 2024)

Company Filing History:

goldMedal40 out of 34,296 
 
Seiko Epson Corporation
 patents

Years Active: 2016-2025

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Areas of Expertise:
Solid Electrolyte
Lithium-Ion Battery
Electrode Assembly
Composite Body
Electrolyte Precursor
Positive Electrode Material
Functional Ceramic
Battery Manufacturing
Polyelectrolyte Composition
Secondary Battery
Electrode Complex
Polymer Electrolyte
40 patents (USPTO):Explore Patents
1. 12283657 - Precursor solution of garnet-type solid electrolyte, method for producing precursor solution of garnet-type solid electrolyte, and garnet-type solid electrolyte (2025-04-21),
2. 12166169 - Solid electrolyte, method for producing solid electrolyte, and composite body (2024-12-10),
3. 12126006 - Positive electrode active material composite body (2024-10-22),
4. 12074278 - Solid electrolyte, method for producing solid electrolyte, and composite (2024-08-27),
5. 11916194 - Solid electrolyte, method for producing solid electrolyte, and composite (2024-02-27),
6. 11777141 - Electrolyte precursor solution, electrode assembly, battery, and electronic apparatus (2023-10-03),
7. 11777140 - Solid electrolyte, method for producing solid electrolyte, and composite body (2023-10-03),
8. 11767266 - Method for producing solid composition and method for producing functional ceramic (2023-09-26),
9. 11735766 - Solid electrolyte, method for producing solid electrolyte, and composite (2023-08-22),
10. 11641032 - Solid electrolyte, method for producing solid electrolyte, and composite body (2023-05-02),
11. 11641031 - Solid electrolyte, method for producing solid electrolyte, and composite body (2023-05-02),
12. 11629099 - Solid composition and production method for functional ceramic (2023-04-18),
13. 11394053 - Composition for forming lithium reduction resistant layer, method for forming lithium reduction resistant layer, and lithium secondary battery (2022-07-19),
14. 11322775 - Secondary battery, method for producing secondary battery, and electronic apparatus (2022-05-03),
15. 11258094 - Solid electrolyte, method for producing solid electrolyte, secondary battery, and electronic apparatus (2022-02-22),

Title: Tomofumi Yokoyama: Innovator in Solid Electrolytes and Composite Materials

Introduction

Tomofumi Yokoyama is a prominent inventor based in Matsumoto, Japan, known for his significant contributions to the field of solid electrolytes and composite materials. With an impressive portfolio of 39 patents, Yokoyama has established himself as a leading figure in innovative technologies that enhance the performance of energy storage systems.

Latest Patents

Among his recent patents, Yokoyama has developed a solid electrolyte characterized by a specific compositional formula: LiLa(ZrWM)O. This breakthrough includes parameters where x and z satisfy ranges of 0.10≤x≤0.60 and 0.00

Career Highlights

Tomofumi Yokoyama works within the esteemed Seiko Epson Corporation, where he has leveraged his expertise to aid in the development of advanced materials for electronic applications. His thorough understanding of materials science has fueled his inventions, which have been pivotal in driving innovation within the company.

Collaborations

Yokoyama frequently collaborates with fellow researchers and inventors such as Hitoshi Yamamoto and Tsutomu Teraoka. Their combined efforts aim to propel advancements in energy storage solutions, focusing on creating more efficient and reliable technologies that can cater to modern energy demands.

Conclusion

Tomofumi Yokoyama's contributions to the field of solid electrolytes and composite materials demonstrate his commitment to innovation. With 39 patents to his name, his work continues to influence the energy storage industry, positioning him as a key inventor in contemporary technology. As he collaborates with esteemed colleagues, the potential for further breakthroughs remains vast, promising exciting developments in the near future.

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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