IDiyas

For the Inventor, By the Inventor

Niihama, Japan

Koji Yamaji

USPTO Granted Patents = 18

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • Ehime, JP (2018 - 2024)
  • Niihama, JP (2019 - 2024)

Company Filing History:

goldMedal18 out of 895 
 
Sumitomo Metal Mining Company, Ltd.
 patents

Years Active: 2018-2025

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18 patents (USPTO):Explore Patents
1. 12381215 - Nonaqueous electrolyte secondary battery positive electrode active material and method for producing same, and nonaqueous electrolyte secondary battery which uses positive electrode active material (2025-08-05),
2. 12381214 - Non-aqueous electrolyte secondary battery positive electrode active material and method for producing same, and non-aqueous electrolyte secondary battery which uses positive electrode active material (2025-08-05),
3. 12195352 - Aluminum-coated nickel cobalt containing composite hydroxide and method for manufacturing same, cathode active material for non-aqueous electrolyte secondary battery and method for manufacturing same, and non-aqueous electrolyte secondary battery (2025-01-14),
4. 11990618 - Positive electrode active material for non-aqueous electrolyte secondary battery and process for producing same, and non-aqueous electrolyte secondary battery (2024-05-21),
5. 11967709 - Nonaqueous electrolyte secondary battery positive electrode active material and method for producing same, and nonaqueous electrolyte secondary battery which uses positive electrode active material (2024-04-23),
6. 11855283 - Method for evaluating a characteristic of a nonaqueous electrolyte secondary battery positive electrode active material (2023-12-26),
7. 11784310 - Non-aqueous electrolyte secondary battery positive electrode active material, method for producing same, and non-aqueous electrolyte secondary battery which uses positive electrode active material (2023-10-10),
8. 11742483 - Nickel manganese composite hydroxide and method for producing same, positive electrode active material for nonaqueous electrolyte secondary battery and method for producing same, and nonaqueous electrolyte secondary battery (2023-08-29),
9. 11605815 - Nonaqueous electrolyte secondary battery positive electrode active material and method for producing same, and nonaqueous electrolyte secondary battery which uses positive electrode active material (2023-03-14),
10. 11476460 - Nickel manganese composite hydroxide and method for producing same, positive electrode active material for nonaqueous electrolyte secondary battery and method for producing same, and nonaqueous electrolyte secondary battery (2022-10-18),
11. 11411214 - Positive electrode active material for nonaqueous electrolyte secondary batteries, production method thereof, positive electrode mixture material paste for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery (2022-08-09),
12. 11196047 - Positive electrode active material for non-aqueous electrolyte secondary battery and process for producing same, and non-aqueous electrolyte secondary battery (2021-12-07),
13. 11121368 - Positive electrode material for nonaqueous electrolyte secondary battery and method for producing the same, and positive electrode composite material paste, and nonaqueous electrolyte secondary battery (2021-09-14),
14. 10858265 - Aluminum-coated nickel cobalt containing composite hydroxide and method for manufacturing same, cathode active material for non-aqueous electrolyte secondary battery and method for manufacturing same, and non-aqueous electrolyte secondary battery (2020-12-08),
15. 10361433 - Positive electrode active material for nonaqueous electrolyte secondary battery, method for producing the same, and nonaqueous electrolyte secondary battery including the same (2019-07-23),

Title: **Koji Yamaji: Innovating Energy Storage Solutions**

Introduction

Koji Yamaji, an innovative inventor based in Niihama, Japan, has made significant contributions to the field of energy storage technology. With a portfolio of 18 patents, he specializes in nonaqueous electrolyte secondary batteries, a vital component in modern energy solutions. His work has garnered attention for improving the efficiency and performance of these batteries, which are essential for various applications, including electric vehicles and portable electronics.

Latest Patents

Yamaji's latest inventions include groundbreaking advancements in positive electrode active materials for nonaqueous electrolyte secondary batteries. One of his notable patents outlines a composite oxide designed to provide high low-temperature output characteristics. This invention focuses on a method of producing a positive electrode active material that suppresses the generation of soluble lithium while avoiding gelation issues during paste preparation. The specific attributes of this positive electrode active material include a lithium-metal composite oxide powder, with structured secondary particles formed by aggregating primary particles rich in lithium, nickel, manganese, and cobalt. Furthermore, the design specifications include a slurry pH below 11.5, a soluble lithium content of 0.5% by mass or less, a specific surface area between 2.0 to 3.0 m/g, and a porosity range of 20 to 50%.

Career Highlights

Koji Yamaji is associated with Sumitomo Metal Mining Company, Ltd., where he has been instrumental in the development of advanced battery technologies. His research has focused on enhancing the performance metrics of batteries, which play a crucial role in the global shift towards sustainable energy solutions. His dedication to innovation in this field has positioned him as a key player in the industry.

Collaborations

Yamaji has collaborated with esteemed colleagues such as Taira Aida and Takehide Honma, highlighting the importance of teamwork in driving technological advancements. This collaboration has led to a productive exchange of ideas and expertise, further fostering innovation in battery technology.

Conclusion

Koji Yamaji stands out as a pioneering inventor committed to advancing battery technology. His innovative patents and collaborative projects underscore the critical role of research and development in creating efficient and high-performing energy solutions. As the demand for sustainable energy continues to grow, the contributions of inventors like Yamaji will be vital in shaping the future of energy storage.

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