Company Filing History:

26 out of 677

Eisai Company, Limited

patents

6 out of 11

General Director of the Agency of Industrial Science and Technology

patents

3 out of 1,037

Agency of Industrial Science and Technology

patents

4. 2 out of 77

Director-general of the Agency of Industrial Science and Technology

where one patent can have more than one assignee

Years Active: 1977-1993

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27 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5245060 - Terpene derivatives and process for preparing the same (1993-09-14),

2. 5104996 - Process for preparing 2,3,5-trimethylbenzoquinone (1992-04-14),

3. 5102895 - Novel vitamin E derivatives and process for the production thereof (1992-04-07),

4. 5073659 - Process for the preparation of terpenes (1991-12-17),

5. 4613571 - Polyprenyl sulfone derivatives and process for producing the same (1986-09-23),

6. 4500463 - Polyprenyl carboxylic acid derivatives (1985-02-19),

7. 4474881 - Process for preparing polyprenyl carboxylic acid derivatives (1984-10-02),

8. 4468459 - Process for the preparation of polyprenyl ketone derivatives (1984-08-28),

9. 4468458 - Two-functional-group-containing terpenoids, processes for the (1984-08-28),

10. 4456558 - Polyprenyl ketone derivatives (1984-06-26),

11. 4454330 - Two-functional-group-containing terpenoids, processes for the (1984-06-12),

12. 4449002 - Polyprenyl sulfones (1984-05-15),

13. 4435423 - Anti-ulcer composition comprising terpenoid containing two functional (1984-03-06),

14. 4386227 - Two-functional-group-containing terpenoids (1983-05-31),

15. 4338251 - Two-functional-group-containing terpenoids, processes for the (1982-07-06),

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.

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