Hirofumi Ota

This inventor holds 10 USPTO granted patents, plus 3 CIPO patents and 3 EPO patents. Top assignees: Nissan Chemical Industries Limited, Nissan Chemical Corporation, Taisho Pharmaceutical Co., Ltd.. Active years: 2011-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Ota. Retrieved from https://idiyas.com/inventor/hirofumi-ota-gbx92lwc

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

Calculating rank

USPTO Granted Patents = 10

CIPO Patents = 3

EPO Patents = 3 (Patent Applications = 4)

Average Co-Inventor Count = 3.8

ph-index = 1

Forward Citations = 10(Granted Patents)

Company Filing History:

8 out of 1,235

Nissan Chemical Industries Limited

patents

2 out of 262

Nissan Chemical Corporation

patents

1 out of 314

Taisho Pharmaceutical Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 2011-2020

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10847725 - Sulfonic acid ester compound and use therefor (2020-11-24),

2. 10533070 - Fluorine atom-containing polymer and use of same (2020-01-14),

3. 10513491 - Sulfonic acid ester compound and use therefor (2019-12-24),

4. 10199578 - Fluorine-atom-containing polymer and use thereof (2019-02-05),

5. 9695148 - 2-pyridone compound (2017-07-04),

6. 8822503 - 2-pyridone compounds (2014-09-02),

7. 8552031 - 3-ethylidenehydrazino substituted heterocyclic compounds as thrombopoietin receptor activators (2013-10-08),

8. 8134013 - Amide compound and thrombopoietin receptor activator (2012-03-13),

9. 8026368 - Hydrazide compounds and thrombopoietin receptor activators (2011-09-27),

10. 7968542 - Thiophene compounds and thrombopoietin receptor activators (2011-06-28),

Title: Hirofumi Ota: Innovator in Electron-Accepting Substances

Introduction

Hirofumi Ota is a prominent inventor based in Funabashi, Japan. He has made significant contributions to the field of chemistry, particularly in the development of electron-accepting substances and polymers. With a total of 10 patents to his name, Ota's work has had a considerable impact on various applications in the industry.

Latest Patents

Among his latest patents, Ota has developed a sulfonic acid ester compound that serves as an electron-accepting substance precursor. This compound is represented by a specific formula, where various groups and atoms are defined to illustrate its chemical structure. Additionally, he has created a fluorine atom-containing polymer, which is a condensation polymer of fluorene derivatives, showcasing his innovative approach to polymer chemistry.

Career Highlights

Ota has worked with notable companies such as Nissan Chemical Industries Limited and Nissan Chemical Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking research and development in the chemical sector.

Collaborations

Throughout his career, Ota has collaborated with esteemed colleagues, including Yukihiro Shigeta and Satoshi Nakano. These partnerships have fostered a creative environment that has led to the advancement of various projects and innovations.

Conclusion

Hirofumi Ota's contributions to the field of chemistry through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the development of new materials and technologies in the industry.

Profile summary based on public USPTO records.