Tsu, Japan

Takehiko Sawai

This inventor holds 20 USPTO granted patents and 7 published patent applications, plus 12 CIPO patents and 13 EPO patents, primarily in Lithium-Ion Batteries. Top assignees: Sei Corporation, Hydro-Quebec, Denka Company Limited. Active years: 2011-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takehiko Sawai. Retrieved from https://idiyas.com/inventor/takehiko-sawai

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

Calculating rank
USPTO Granted Patents = 20 

% Patents Active = 60.0

 

 

Average Co-Inventor Count = 5.2

ph-index = 2

Forward Citations = 20(Granted Patents)


Location History:

  • Mie, JP (2016 - 2020)
  • Tsu, JP (2011 - 2024)

Company Filing History:


Years Active: 2011-2025

Loading Chart...
Loading Chart...
Loading Chart...
Areas of Expertise:
Electrode Material
Lithium-Ion Battery
Positive-Electrode Materials
Battery Production
Carbon Coating
Electrolyte Holder
Composite Particles
Power Collection Foil
Binder Composition
Rechargeable Battery
Manufacturing Method
20 patents (USPTO):Explore Patents

Title: The Innovations of Takehiko Sawai: A Pioneer in Lithium-Ion Battery Technology

Introduction: Takehiko Sawai, an esteemed inventor based in Tsu, Japan, has made significant strides in the realm of lithium-ion battery technology. With a prolific portfolio of 19 patents, his innovations have contributed to advancements in energy storage solutions, propelling the efficiency of lithium-ion batteries for a variety of applications.

Latest Patents: Among his most noteworthy inventions are two groundbreaking patents focused on electrode materials for lithium-ion secondary batteries. The first patent outlines a method for producing an electrode material. This involves mixing components of a basic ingredient with conductive carbon material to create a composite material, then combining this with a surface layer-forming material, and subsequently burning the mixture to yield the final electrode material. This innovative approach enhances the performance of lithium-ion batteries.

The second patent concentrates on the development of positive-electrode materials for lithium secondary batteries. It introduces a composition that includes a lithium oxide compound or a complex oxide as the reactive substance, alongside various types of carbon materials for improved conductivity. This development facilitates the creation of lithium secondary batteries that boast greater durability and efficiency.

Career Highlights: Takehiko Sawai has garnered valuable experience through his career in notable companies such as Sei Corporation and Hydro-Quebec. His tenure at these organizations has allowed him to collaborate with fellow experts and engineers, further driving innovation in battery technology.

Collaborations: Throughout his career, Sawai has worked closely with esteemed colleagues including Shinji Saito and Kazunori Urao. Their collective efforts have contributed to the advancement of lithium-ion battery technology, underscoring the importance of collaborative innovation in driving the industry forward.

Conclusion: Takehiko Sawai's contributions to lithium-ion battery technology, showcased through his numerous patents and collaborative ventures, mark him as a key figure in the field of energy storage solutions. His inventive methodologies and groundbreaking materials continue to shape the future of lithium-ion batteries, positioning him as a leading innovator in a rapidly evolving industry.

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…