Sagamihara, Japan

Yoko Hashizume

This inventor holds 5 USPTO granted patents and 4 EPO patents. Top assignee: Nec Energy Devices, Ltd.. Active years: 2013-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoko Hashizume. Retrieved from https://idiyas.com/inventor/yoko-hashizume-af20j9vw

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 = 4.3

ph-index = 3

Forward Citations = 10(Granted Patents)


Location History:

  • Sendai, JP (2013)
  • Kanagawa, JP (2016)
  • Sagamihara, JP (2013 - 2017)

Company Filing History:


Years Active: 2013-2017

Loading Chart...
Loading Chart...
5 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Yoko Hashizume

Introduction

Yoko Hashizume is a prominent inventor residing in Sagamihara, Japan. With a remarkable portfolio of five patents, Hashizume has significantly contributed to advancements in battery technology, particularly in the realm of lithium-ion batteries.

Latest Patents

Among his latest innovations are two important patents: a nonaqueous electrolyte solution and a lithium-ion secondary battery incorporating this solution. The nonaqueous electrolyte solution is designed to provide prolonged flame retardancy and excellent capacity maintenance. It consists of a lithium salt, along with unique oxo-acid ester derivatives of phosphorus and disulfonate esters. On the other hand, his lithium-ion battery is noteworthy for maintaining long-lasting flame retardancy, high energy density, and enhanced charge/discharge cycle characteristics. This battery features an electrolyte that includes both an ionic liquid and a lithium salt and incorporates a surface-treated carbon material for the negative electrode.

Career Highlights

Hashizume is currently affiliated with NEC Energy Devices, Ltd., a company known for its innovation in energy solutions. His work has had a substantial impact on the development of safer and more efficient batteries that meet the growing demands of modern technology.

Collaborations

Throughout his career, Yoko has collaborated with notable colleagues, including Shinako Kaneko and Hitoshi Ishikawa. These partnerships have allowed him to enhance his research efforts and share valuable insights within the field of energy devices.

Conclusion

Yoko Hashizume exemplifies the spirit of innovation through his contributions to battery technology. His dedication to creating safer, more efficient energy solutions not only reflects his expertise as an inventor but also underscores the importance of collaboration in achieving significant advancements. As the demand for sustainable energy technologies continues to grow, Hashizume's work will undoubtedly play a pivotal role in shaping the future of energy storage.

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]
Loading…