Seishi Yoshikawa

This inventor holds 16 USPTO granted patents and 17 published patent applications, plus 11 CIPO patents and 12 EPO patents. Top assignees: Toyo Seikan Group Holdings, Ltd., Toyo Seikan Kaisha, Ltd.. Active years: 2011-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seishi Yoshikawa. Retrieved from https://idiyas.com/inventor/seishi-yoshikawa

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

USPTO Granted Patents = 16 (Patent Applications = 17)

% Patents Active = 93.8

CIPO Patents = 11

EPO Patents = 12 (Patent Applications = 25)

Average Co-Inventor Count = 2.7

ph-index = 3

Forward Citations = 89(Granted Patents)

Location History:

Kanagawa, JP (2011 - 2019)
Yokohama, JP (2013 - 2024)

Company Filing History:

12 out of 222

Toyo Seikan Group Holdings, Ltd.

patents

4 out of 586

Toyo Seikan Kaisha, Ltd.

patents

Years Active: 2011-2026

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12623443 - Packaging bag and packaging multilayer film to be used for producing the packaging bag (2026-05-12),

2. 12558817 - Method of removing impurities from plastic (2026-02-24),

3. 12486090 - Layered body for packaging (2025-12-02),

4. 12221532 - Propylene-based resin composition and film for heat sealing (2025-02-11),

5. 12084541 - Polylactic acid solid composition and method for producing the same (2024-09-10),

6. 11148402 - Heat-resistant multilayer container and method for producing the same (2021-10-19),

7. 11104840 - Method of extracting underground resources by using hydrolysable particles (2021-08-31),

8. 10626246 - Polylactic acid composition (2020-04-21),

9. 10487620 - Method of extracting underground resources and hydrolysis-blocking agent for use in the method (2019-11-26),

10. 10385171 - Powder comprising hydrolyzable resin particles (2019-08-20),

11. 10246625 - Dispersion solution for drilling and method of extraction using the dispersion solution (2019-04-02),

12. 10040983 - Dispersion solution for drilling and method of extracting underground resources using the dispersion solution (2018-08-07),

13. 9284432 - Method for degrading a readily-degradable resin composition (2016-03-15),

14. 8846355 - Method for degrading biodegradable resin (2014-09-30),

15. 8501445 - Method for producing oligomer and/or monomer by degrading biodegradable resin (2013-08-06),

Title: Seishi Yoshikawa: Pioneering Inventor from Yokohama

Introduction: Seishi Yoshikawa is a renowned inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Yoshikawa's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable technology for healthcare monitoring, and sustainable energy solutions for urban environments.

Career Highlights: With over two decades of experience in research and development, Yoshikawa has led numerous successful projects that have resulted in patented inventions revolutionizing various industries. His expertise spans across robotics, nanotechnology, and renewable energy.

Collaborations: Throughout his career, Yoshikawa has collaborated with leading tech companies, research institutions, and universities worldwide. His collaborative efforts have led to the development of cutting-edge technologies that have had a significant impact on society.

Conclusion: Seishi Yoshikawa's passion for innovation and his relentless pursuit of technological advancement continue to inspire the next generation of inventors. His contributions to the world of inventions have solidified his legacy as a visionary in the field of technology.

Profile summary based on public USPTO records.