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For the Inventor, By the Inventor

Tokuyama, Japan

Toshio Hironaka

This inventor holds 9 USPTO granted patents. Top assignees: Tosoh Corporation, Toyo Soda Manufacturing Co., Ltd.. Active years: 1976-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Hironaka. Retrieved from https://idiyas.com/inventor/toshio-hironaka

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 5

Forward Citations = 59(Granted Patents)


Location History:

  • Shin-nanyo, JA (1976)
  • Yamaguchi, JP (1988 - 1989)
  • Tokuyama, JP (1985 - 1994)

Company Filing History:

goldMedal5 out of 922 
 
Tosoh Corporation
 patents
silverMedal4 out of 285 
 
Toyo Soda Manufacturing Co., Ltd.
 patents

Years Active: 1976-1994

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9 patents (USPTO):Explore Patents
1. 5321160 - Process for producing an ethylenamine (1994-06-14),
2. 5248827 - Process for producing an ethylenamine (1993-09-28),
3. 5001289 - Shaped zeolite catalyst for liquid phase organic reactions (1991-03-19),
4. 4914247 - Process for preparing para-substituted halogenobenzene derivatives (1990-04-03),
5. 4861929 - Process for producing halogenated benzene derivative using zeolite (1989-08-29),
6. 4849560 - Process for preparation of halogenated benzene derivatives (1989-07-18),
7. 4792644 - Preparation of halogenated benzene derivatives (1988-12-20),
8. 4528410 - Process for preparation of alcohols by hydration of olefins (1985-07-09),
9. 3943161 - Process for producing conjugated dienes containing a cyano group (1976-03-09),

Title: Toshio Hironaka: Innovator in Ethylenamine Production

Introduction

Toshio Hironaka is a prominent inventor based in Tokuyama, Japan, known for his significant contributions to the field of chemical engineering. With a total of nine patents to his name, he has played a crucial role in advancing the production processes of ethylenamines, which are vital intermediates in various applications.

Latest Patents

Hironaka's latest patents focus on innovative processes for producing ethylenamines. One notable invention describes a method that involves reacting ammonia and/or an ethylenamine with an ethanolamine in the presence of hydrogen. This process yields an ethylenamine characterized by an increased number of ethylene chains compared to the starting materials. It employs catalysts that contain nickel as well as various elements (X) such as rhenium, iridium, platinum, or palladium. Additionally, when using rhenium, iridium, or lead as element X, the catalyst includes at least one rare earth element from a specified group. Another patent describes a similar process, utilizing nickel and rare earth elements for enhanced reaction efficiency.

Career Highlights

Throughout his career, Toshio Hironaka has been associated with esteemed organizations, including Tosoh Corporation and Toyo Soda Manufacturing Co., Ltd. His work in these companies has enabled him to apply his inventive spirit and technical skills to develop groundbreaking processes that contribute to the production of essential chemical products.

Collaborations

Hironaka has had the opportunity to collaborate with talented individuals, including Yukihiro Tsutsumi and Kazuhiko Sekizawa. These collaborations have played a vital role in furthering his innovations and enhancing the effectiveness of the processes he has developed.

Conclusion

Toshio Hironaka stands as an influential figure in the field of chemical production, particularly in the area of ethylenamine synthesis. His nine patents reflect a commitment to innovation and a passion for advancing technology. Through his collaboration with peers and his work at notable companies, Hironaka's contributions continue to shape the industry and inspire future generations of inventors.

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]
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