Tetsuo Sakai

This inventor holds 53 USPTO granted patents and 9 published patent applications, plus 1 CIPO patent and 20 EPO patents, primarily in Lithium-Ion Batteries. Top assignees: National Institute of Advanced Industrial Science and Technology, Agency of Industrial Science and Technology, Kabushiki Kaisha Toyota Jidoshokki. Active years: 1992-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuo Sakai. Retrieved from https://idiyas.com/inventor/tetsuo-sakai

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

USPTO Granted Patents = 53 (Patent Applications = 9)

% Patents Active = 73.6

CIPO Patents = 1

EPO Patents = 20 (Patent Applications = 14)

Average Co-Inventor Count = 5.2

ph-index = 6

Forward Citations = 97(Granted Patents)

Location History:

Amagasaki, JP (1992 - 1995)
Ikeda, JP (1996 - 2020)
Osaka, JP (1997 - 2021)
Yonezawa, JP (2021)
Yonezawashi, JP (2022)

Company Filing History:

36 out of 1,765

National Institute of Advanced Industrial Science and Technology

patents

9 out of 1,430

Agency of Industrial Science and Technology

patents

9 out of 1,902

Kabushiki Kaisha Toyota Jidoshokki

patents

4. 8 out of 768

Gs Yuasa International Ltd.

patents

5. 4 out of 3,455

Kawasaki Jukogyo Kabushiki Kaisha

Sumitomo Electric Industries, Limited

patents

8. 3 out of 4,544

Sumitomo Rubber Industries Limited

patents

9. 3 out of 302

Sumitomo Seika Chemicals Co., Ltd.

patents

10. 2 out of 5

Imra Material R & D Co., Ltd.

patents

11. 2 out of 11

Isuzu Glass Company, Ltd.

patents

12. 2 out of 1,343

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

patents

13. 1 out of 50

Fukuda Metal Foil & Powder Co., Ltd.

patents

14. 1 out of 2

Government Industrial Research Institute

Japan Vilene Company, Ltd.

patents

17. 1 out of 13,796

Murata Manufacturing Co., Ltd.

patents

18. 1 out of 1

Nat'l Institute of Advanced Industrial Science . . .

patent

19. 1 out of 606

Nippon Electric Glass Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1992-2026

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Areas of Expertise:

Lithium-Ion Battery

Hydrogen Storage Alloy

Positive Electrode

Negative Electrode

Sulfur-Based Material

Electrical Storage Device

Fiber Electrode

Composite Materials

Manufacturing Process

Secondary Battery

Active Material

53 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12676313 - Electrode for all-solid-state secondary batteries, all-solid-state secondary battery and method for producing all-solid-state secondary battery (2026-07-07),

2. 12548768 - Active material layer for negative electrode, method for producing same, electrode mixture paste for power storage device negative electrode, negative electrode for power storage device, and power storage device (2026-02-10),

3. 12482821 - Active material layer for negative electrode, method for producing same, electrode mixture paste for power storage device negative electrode, negative electrode for power storage device, and power storage device (2025-11-25),

4. 11532819 - Electrode binder resin composition, electrode mix paste, and electrode (2022-12-20),

5. 11201326 - Metal-ion secondary battery (2021-12-14),

6. 11088391 - Lithium ion battery (2021-08-10),

7. 10847279 - Method for making a sulfur-based positive-electrode active material (2020-11-24),

8. 10797323 - Current collector for fuel cell, and fuel cell (2020-10-06),

9. 10164259 - Binder for use in positive electrode for lithium ion secondary battery, positive electrode for lithium ion secondary battery containing said binder, lithium ion secondary battery using said positive electrode, and electrical machinery and apparatus (2018-12-25),

10. 10164244 - Negative-electrode mixture for non-aqueous electrolyte secondary cell, negative electrode for non-aqueous electrolyte secondary cell containing said mixture, non-aqueous electrolyte secondary cell provided with said negative electrode, and electrical device (2018-12-25),

11. 10141573 - Lithium secondary battery negative electrode active material and method for manufacturing same (2018-11-27),

12. 10068717 - Binder for electric double-layer capacitor electrode, electric double-layer capacitor electrode comprising same binder, electric double-layer capacitor using same electrode, and electric apparatus (2018-09-04),

13. 10008722 - Sulfur-based positive-electrode active material and lithium-ion secondary battery (2018-06-26),

14. 9869007 - Hydrogen storage alloy, hydrogen storage alloy electrode, secondary battery, and method for producing hydrogen storage alloy (2018-01-16),

15. 9812702 - Lithium ion secondary battery having positive electrode that comprises thermal run-away suppressing layer on positive electrode active material layer (2017-11-07),

Title: The Innovative Journey of Tetsuo Sakai

Introduction: Tetsuo Sakai, a pioneering inventor hailing from Ikeda, Japan, has made significant contributions to the world of innovations with his groundbreaking ideas and inventions.

Latest Patents: Tetsuo Sakai holds several patents in various fields, including technology, healthcare, and engineering. His most recent patents focus on sustainable energy solutions and advanced robotics.

Career Highlights: Throughout his illustrious career, Tetsuo Sakai has been recognized for his inventive spirit and problem-solving skills. He has received numerous awards for his innovative creations, showcasing his dedication to pushing the boundaries of technology.

Collaborations: Tetsuo Sakai has collaborated with leading research institutions and universities to further his research and bring his inventions to life. His partnerships have been instrumental in the development of cutting-edge technologies that have the potential to revolutionize industries.

Conclusion: Tetsuo Sakai's passion for innovation and his relentless pursuit of excellence have established him as a prominent figure in the world of inventors. His remarkable contributions continue to inspire future generations of inventors and shape the landscape of technological advancements.

Profile summary based on public USPTO records.