Kurashiki, Japan

Kunihiko Yamashita

This inventor holds 4 USPTO granted patents. Top assignee: Asahi Kasei Kogyo Kabushiki Kaisha. Active years: 1978-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kunihiko Yamashita. Retrieved from https://idiyas.com/inventor/kunihiko-yamashita

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 4

Forward Citations = 24(Granted Patents)


Location History:

  • Kurashiki, JA (1978)
  • Kurashiki, JP (1983 - 1995)

Company Filing History:


Years Active: 1978-1995

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4 patents (USPTO):Explore Patents

Title: Kunihiko Yamashita: Innovator in Chemical Engineering

Introduction

Kunihiko Yamashita is a prominent inventor based in Kurashiki, Japan. He has made significant contributions to the field of chemical engineering, particularly in the area of hydrocarbon processing. With a total of 4 patents to his name, Yamashita's work has advanced the methods of producing valuable chemical compounds.

Latest Patents

Yamashita's latest patents include innovative methods that enhance the efficiency of chemical reactions. One notable patent is a "Method for partially hydrogenating a monocyclic aromatic hydrocarbon." This method involves reacting a monocyclic aromatic hydrocarbon with hydrogen in the presence of a particulate hydrogenation catalyst, primarily composed of metallic ruthenium. The process is designed to produce cycloolefins with high selectivity and yield while maintaining stable catalytic activity over time.

Another significant patent is the "Method for hydrating a cycloolefin." This method utilizes a reaction system that includes a continuous aqueous phase with water and a crystalline aluminosilicate catalyst, along with an oil phase containing the cycloolefin. The process allows for the production of cyclic alcohols with high selectivity and yield, while also ensuring the catalyst's activity remains stable for extended periods.

Career Highlights

Yamashita is associated with Asahi Kasei Kogyo Kabushiki Kaisha, a leading company in the chemical industry. His work at the company has been instrumental in developing advanced chemical processes that contribute to the production of essential materials.

Collaborations

Throughout his career, Yamashita has collaborated with notable colleagues, including Hideaki Obana and Issei Katsuta. These collaborations have fostered innovation and have led to the successful development of new chemical methodologies.

Conclusion

Kunihiko Yamashita's contributions to chemical engineering through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the production of valuable chemical compounds, showcasing the importance of innovation in advancing industrial processes.

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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