Yasuyuki Koizumi

This inventor holds 18 USPTO granted patents, primarily in Liquid Crystal Technology. Top assignees: Chisso Corporation, Other. Active years: 1993-2004.

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

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

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 5.2

ph-index = 7

Forward Citations = 106(Granted Patents)

Location History:

Ichiharashi, JP (1994 - 1995)
Ichihara, JP (1993 - 1998)
Kanagawa, JP (2001)
Chiba, JP (1998 - 2004)

Company Filing History:

17 out of 1,109

Chisso Corporation

patents

1 out of 834,570

Other

patents

Years Active: 1993-2004

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Areas of Expertise:

Liquid Crystal Composition

Liquid Crystal Display

Liquid Crystalline Compound

Alkadienyl Group

Dienyl Moiety

Fluorine-Substituted

Optically Active

Alkenylcyclohexane Derivatives

Ester Derivative

Display Element

Production Process

18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6703083 - Silicon compound, liquid crystal composition and liquid crystal display (2004-03-09),

2. 6319570 - Liquid crystalline compound, liquid crystal composition comprising the liquid crystal-line compound, and liquid crystal display device using the liquid crystal composition (2001-11-20),

3. 6190576 - Liquid crystal compounds, liquid crystal compostions containing the compounds, and liquid crystal display devices made by using the compositions (2001-02-20),

4. 6174457 - Compound having alkadienyl group as side chain, and liquid crystal composition using same (2001-01-16),

5. 6086964 - Liquid crystalline compound having dienyl moiety and liquid crystal (2000-07-11),

6. 6051288 - Fluorine-substituted liquid-crystal compound, liquid-crystal composition (2000-04-18),

7. 6001275 - Liquid-crystalline compound having dienyl moiety and liquid-crystal (1999-12-14),

8. 5820784 - Liquid crystal compostion and liquid crystal display device (1998-10-13),

9. 5776367 - Alkenylcyclohexane derivatives, liquid crystal composition and liquid (1998-07-07),

10. 5755994 - Ester derivative, liquid crystal composition and liquid crystal display (1998-05-26),

11. 5733477 - Liquid crystal composition and liquid crystal display element (1998-03-31),

12. 5604120 - Method for producing optically active endo-2-norborneols (1997-02-18),

13. 5518903 - Process for producing optically active 3-aminobutanoic acid and the (1996-05-21),

14. 5449793 - Process for producing an optically active (1995-09-12),

15. 5395983 - Process for producing 1-phenyl-1,3-propanediols having high optical (1995-03-07),

Title: Yasuyuki Koizumi: Innovator in Liquid Crystal Technology

Introduction

Yasuyuki Koizumi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of liquid crystal technology, holding a total of 18 patents. His work has been instrumental in advancing the development of liquid crystal displays and related materials.

Latest Patents

Koizumi's latest patents include innovations such as a silicon compound, a liquid crystal composition, and a liquid crystal display. His patent titled "Liquid crystalline compound, liquid crystal composition comprising the liquid crystal-line compound, and liquid crystal display device using the liquid crystal composition" showcases his expertise in this cutting-edge technology.

Career Highlights

Throughout his career, Yasuyuki Koizumi has worked with notable companies, including Chisso Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in liquid crystal technology.

Collaborations

Koizumi has collaborated with esteemed colleagues such as Kazutoshi Miyazawa and Etsuo Nakagawa. These partnerships have fostered innovation and have been crucial in the development of his patented technologies.

Conclusion

Yasuyuki Koizumi's contributions to liquid crystal technology are noteworthy, and his patents reflect his dedication to innovation in this field. His work continues to influence the industry and pave the way for future advancements.

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]