Yoshito Ishii

This inventor holds 23 USPTO granted patents and 2 published patent applications, plus 7 CIPO patents and 1 EPO patent, primarily in Lithium-Ion Battery Technology. Top assignees: Hitachi Chemical Company, Ltd., Hitachi, Ltd.. Active years: 2001-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshito Ishii. Retrieved from https://idiyas.com/inventor/yoshito-ishii

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

Calculating rank

USPTO Granted Patents = 23 (Patent Applications = 2)

% Patents Active = 47.8

CIPO Patents = 7

EPO Patents = 1 (Patent Applications = 6)

Average Co-Inventor Count = 4.2

ph-index = 7

Forward Citations = 127(Granted Patents)

Location History:

Ibaraki, JP (2014 - 2016)
Mito, JP (2016)
Hitachi, JP (2001 - 2020)

Company Filing History:

19 out of 1,641

Hitachi Chemical Company, Ltd.

Years Active: 2001-2020

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Areas of Expertise:

Lithium Ion Battery

Anode Material

Negative Electrode

Graphite Particles

Secondary Battery

Non-Aqueous Battery

Battery Manufacturing

Energy Storage

Battery Chemistry

Electrode Design

23 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10854871 - Anode material for lithium ion secondary battery, anode for lithium ion secondary battery, and lithium ion secondary battery (2020-12-01),

2. 10651458 - Negative electrode for lithium secondary battery and lithium secondary battery (2020-05-12),

3. 9508980 - Graphite particles and lithium secondary battery using the same as negative (2016-11-29),

4. 9450246 - Carbon particles for negative electrode of lithium ion secondary battery, negative electrode for lithium ion secondary battery, and lithium ion secondary battery (2016-09-20),

5. 8802297 - Graphite particles and lithium secondary battery using the same as negative electrode (2014-08-12),

6. 8580437 - Graphite particles and lithium secondary battery using the same as negative electrode (2013-11-12),

7. 8129051 - Graphite particles and lithium secondary battery using the same as negative electrode (2012-03-06),

8. 7947395 - Graphite particles and lithium secondary battery using the same as negative electrode (2011-05-24),

9. 7906240 - Negative electrode for lithium secondary battery and lithium secondary battery (2011-03-15),

10. 7700239 - Graphite particles and lithium secondary battery using the same as negative electrode (2010-04-20),

11. 7410727 - Graphite particles and lithium secondary battery using the same as negative electrode (2008-08-12),

12. 7399553 - Graphite particles and lithium secondary battery using the same as negative electrode (2008-07-15),

13. 7378191 - Graphite particles and lithium secondary battery using the same as negative electrode (2008-05-27),

14. 7335447 - Graphite particles and lithium secondary battery using the same as negative electrode (2008-02-26),

15. 7288342 - Graphite particles and lithium secondary battery using the same as negative electrode (2007-10-30),

Title: Yoshito Ishii - Pioneering Inventor at Hitachi

Introduction: Yoshito Ishii is a renowned inventor based in Hitachi, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Yoshito Ishii holds several patents in the areas of electronics, robotics, and artificial intelligence, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Ishii has played a pivotal role in the development of cutting-edge technologies at Hitachi, leading to significant advancements in various industries.

Collaborations: Throughout his career, Yoshito Ishii has collaborated with top researchers, engineers, and scientists both within Hitachi and across the globe, fostering a culture of innovation and excellence.

Conclusion: Yoshito Ishii's passion for innovation and his relentless pursuit of technological advancement have solidified his reputation as a visionary inventor in the world of technology.

Profile summary based on public USPTO records.