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For the Inventor, By the Inventor

Kanagawa, Japan

Kiyoshi Iizuka

This inventor holds 11 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1980-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyoshi Iizuka. Retrieved from https://idiyas.com/inventor/kiyoshi-iizuka

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 7

Forward Citations = 149(Granted Patents)


Location History:

  • Kawasaki, JP (1980)
  • Yokohama, JP (1983 - 1992)
  • Kanagawa, JP (1986 - 1992)

Company Filing History:

goldMedal11 out of 92,901 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1980-1992

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11 patents (USPTO):Explore Patents
1. 5136409 - Liquid crystal device having at least two zones having different (1992-08-04),
2. 5122888 - Focusing plate having phase grating formed by using liquid crystal (1992-06-16),
3. 4795238 - Liquid crystal focusing screen having different groups of electrodes (1989-01-03),
4. 4711547 - Display device (1987-12-08),
5. 4606612 - Optical phase filter using liquid crystal (1986-08-19),
6. 4586802 - Camera capable of special effects photography (1986-05-06),
7. 4586029 - Blur detecting device (1986-04-29),
8. 4567123 - Diffusing plate (1986-01-28),
9. 4427265 - Diffusion plate (1984-01-24),
10. 4421398 - Focussing plate (1983-12-20),
11. 4229750 - Information output unit (1980-10-21),

Title: Kiyoshi Iizuka: Innovator in Liquid Crystal Technology

Introduction

Kiyoshi Iizuka is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of liquid crystal technology, holding a total of 11 patents. His work has advanced the understanding and application of liquid crystals in various devices.

Latest Patents

Iizuka's latest patents include innovative designs for liquid crystal devices. One notable patent describes a liquid crystal element that features at least two zones with different molecular orientations. This element includes upper and lower electrodes that are opposed in plane to each other, allowing for phasic variations of the liquid crystal through the application of different electric fields. Another patent focuses on a focusing plate that incorporates a phase grating formed by liquid crystal. This design utilizes an electrode pattern to rotate liquid crystal molecules, creating a phase-type diffraction grating.

Career Highlights

Kiyoshi Iizuka has built a successful career at Canon Kabushiki Kaisha, where he has been instrumental in developing cutting-edge liquid crystal technologies. His expertise has led to numerous advancements in the functionality and efficiency of liquid crystal devices.

Collaborations

Throughout his career, Iizuka has collaborated with notable colleagues, including Keiji Ohtaka and Takashi Suzuki. These partnerships have fostered innovation and have contributed to the success of various projects within the company.

Conclusion

Kiyoshi Iizuka's contributions to liquid crystal technology have made a lasting impact on the industry. His innovative patents and collaborative efforts continue to shape the future of liquid crystal applications.

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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