Niiza, Japan

Shizumasa Kijima

This inventor holds 28 USPTO granted patents, primarily in Terpene Derivatives. Top assignees: Eisai Company, Limited, Agency of Industrial Science and Technology, Esai Co., Ltd.. Active years: 1976-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shizumasa Kijima. Retrieved from https://idiyas.com/inventor/shizumasa-kijima

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 = 6.2

ph-index = 6

Forward Citations = 97(Granted Patents)


Location History:

  • Tokyo, J (1976)
  • Tokyo, JA (1977)
  • Tokyo, JP (1978 - 1980)
  • Niiza, JP (1982 - 1986)
  • Kashiwa, JP (1992)
  • Chiba, JP (1991 - 1993)

Company Filing History:


Years Active: 1976-1993

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Areas of Expertise:
Terpene Derivatives
Polyprenyl Compounds
Vitamin E Derivatives
Anti-Ulcer Composition
Hypertension Agent
Coenzyme Q Compounds
Boric Acid Ester
Pyranochromone Derivatives
Aliphatic Ketone
Trimethylbenzoquinone
Functional-Group Terpenoids
Peptic Ulcer Treatments
28 patents (USPTO):Explore Patents

Title: Shizumasa Kijima: A Pioneer in Terpene Derivatives and Organic Chemistry

Introduction: Shizumasa Kijima is a distinguished inventor based in Niiza, Japan, known for his significant contributions to the field of organic chemistry. With 27 patents to his name, Kijima has focused his innovative efforts on the development of terpene derivatives and their applications in various industries.

Latest Patents: Among his notable recent patents are important advancements in the preparation of terpene derivatives. One such patent describes a terpene derivative represented by a specific general formula, where compounds are tailored for applications in drugs, food, and perfumes. Additionally, Kijima's process for preparing 2,3,5-trimethylbenzoquinone showcases his expertise, detailing an oxidation process involving 2,3,6-trimethyl-phenol with cupric chloride and lithium chloride in a suitable solvent mixture.

Career Highlights: Over the years, Shizumasa Kijima has built a remarkable career, having worked with renowned organizations such as Eisai Company, Limited. He has also served as the General Director of the Agency of Industrial Science and Technology, where he played a pivotal role in promoting technological advancements and innovations within the industry.

Collaborations: Throughout his career, Kijima has collaborated with notable colleagues, including Isao Yamatsu and Akio Sato. These partnerships have fostered an environment of creativity and innovation, contributing to the development of groundbreaking inventions and patents.

Conclusion: Shizumasa Kijima's extensive patent portfolio and dedication to organic chemistry underscore his importance as an inventor in the scientific community. His work on terpene derivatives and other chemical processes positions him as a leader in his field, impacting numerous industries and paving the way for future innovations.

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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