Kiyohumi Takeuchi

This inventor holds 17 USPTO granted patents. Top assignees: Dainippon Ink and Chemicals, Incorporated, Dainippon Mk & Chemicals Inc., Kawamura Institute of Chemical Research. Active years: 1983-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyohumi Takeuchi. Retrieved from https://idiyas.com/inventor/kiyohumi-takeuchi

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 9

Forward Citations = 186(Granted Patents)

Location History:

Urawa, JP (1983)
Toyko, JP (1988)
Tokyo, JP (1987 - 1996)

Company Filing History:

16 out of 630

Dainippon Ink and Chemicals, Incorporated

patents

1 out of 1

Dainippon Mk & Chemicals Inc.

patent

1 out of 42

Kawamura Institute of Chemical Research

patents

where one patent can have more than one assignee

Years Active: 1983-1996

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5536443 - Cyclic hydrocarbon derivative and liquid crystal composition containing (1996-07-16),

2. 5474707 - Cyclic hydrocarbon derivative and liquid crystal composition containing (1995-12-12),

3. 5321169 - Cyclohexane derivatives (1994-06-14),

4. 5304323 - Liquid crystal devices and process for producing the same (1994-04-19),

5. 5089629 - Fluorine-substituted cyclohexylcyclohexene derivative (1992-02-18),

6. 4961874 - Optically active tolan derivatives (1990-10-09),

7. 4946986 - Cyclohexene derivatives (1990-08-07),

8. 4910350 - Fluorine-substituted cyclohexylcyclohexene derivative (1990-03-20),

9. 4880936 - Optically active pyridines useful in liquid crystal form for electrical (1989-11-14),

10. 4814523 - Nematic liquid crystal compound of four ring systems (1989-03-21),

11. 4814516 - Novel optically active tolan derivatives (1989-03-21),

12. 4764636 - Optically active benzoic ester derivatives (1988-08-16),

13. 4754051 - Optically active tolan derivative (1988-06-28),

14. 4698177 - Cyclohexylcyclohexene derivatives (1987-10-06),

15. 4670182 - Nematic liquid crystalline composition (1987-06-02),

Title: The Innovative Mind of Kiyohumi Takeuchi: A Pioneer in Liquid Crystal Technologies

Introduction: Kiyohumi Takeuchi, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of liquid crystal technologies. With a remarkable portfolio of 17 patents, his innovations have opened new avenues in electro-optic materials and display technologies.

Latest Patents: Among his latest patents are groundbreaking developments in cyclic hydrocarbon derivatives and liquid crystal compositions. These patents cover complex compounds that serve as vital materials for electro-optic liquid crystal displays. Specifically, his work includes intricate formulations involving various functional groups that enhance the properties and efficiencies of liquid crystal displays.

Career Highlights: Kiyohumi Takeuchi has had a fruitful career, working with renowned companies such as Dainippon Ink and Chemicals, Incorporated and the Kawamura Institute of Chemical Research. His expertise in chemical compositions and materials science has established him as a leading figure in the development of innovative display technologies.

Collaborations: Throughout his career, Takeuchi has collaborated with notable coworkers such as Haruyoshi Takatsu and Yasuyuki Tanaka. Together, they have contributed to advancing the understanding and application of liquid crystal materials in various displays, enhancing performance and functionality in consumer electronics.

Conclusion: Kiyohumi Takeuchi's prolific output of patents and collaborations reflect his dedication to innovation in the field of liquid crystal technology. As he continues to work on developing new materials and methods, his contributions will undoubtedly have a lasting impact on the industry, pushing the boundaries of what is possible in display technologies.

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]