Tokyo, Japan

Kiyohiko Koizumi

This inventor holds 2 USPTO granted patents. Top assignees: Koa Oil Company, Limited, Kobe Steel, Ltd.. Active years: 1978-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyohiko Koizumi. Retrieved from https://idiyas.com/inventor/kiyohiko-koizumi

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


% Patents Active = 100.0

Average Co-Inventor Count = 5.1

ph-index = 2

Forward Citations = 27(Granted Patents)


Location History:

  • Tokyo, JA (1978)
  • Tokyo, JP (1982)

Company Filing History:


Years Active: 1978-1982

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2 patents (USPTO):Explore Patents

Title: Kiyohiko Koizumi: Innovator in Thermal Cracking Processes

Introduction

Kiyohiko Koizumi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of thermal cracking processes, particularly in the production of light oils and sponge iron from heavy oil. With a total of 2 patents, his work showcases innovative approaches to energy efficiency and resource utilization.

Latest Patents

Koizumi's latest patents include an integrated process for thermal cracking of heavy oil and a method for continuous production of pitch. The first patent describes a process where vacuum distillation residue oil, characterized by a Conradson carbon value of 5 to 40% and a specific gravity of 0.9 to 1.10, is thermally cracked in the presence of iron ore particles. This process not only produces light oils and cracked gases but also generates by-product carbon that deposits on the iron ore particles. These particles are then heated in a reducing furnace to produce sponge iron, creating an economical and integrated process for heavy oil utilization. The second patent outlines a method for the continuous production of pitch by heat treating heavy hydrocarbon oil at temperatures between 350°C to 500°C in a series of reactors. This innovative approach allows for the efficient production of molten pitch while maintaining an inactive atmosphere during the cooling process.

Career Highlights

Throughout his career, Kiyohiko Koizumi has worked with prominent companies such as Koa Oil Company, Limited and Kobe Steel, Ltd. His experience in these organizations has contributed to his expertise in thermal cracking technologies and their applications in the energy sector.

Collaborations

Koizumi has collaborated with notable colleagues, including Eiji Miura and Kiyoharu Yoshimura. These partnerships have fostered a collaborative environment that has led to advancements in their respective fields.

Conclusion

Kiyohiko Koizumi's innovative work in thermal cracking processes has made a significant impact on the energy industry. His patents reflect a commitment to developing efficient methods for utilizing heavy oil and producing valuable by-products. His contributions continue to influence advancements in energy technology.

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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