Tokyo, Japan

Keita Kaifu

This inventor holds 14 USPTO granted patents and 3 published patent applications and 2 EPO patents. Top assignee: Sony Corporation. Active years: 2010-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keita Kaifu. Retrieved from https://idiyas.com/inventor/keita-kaifu

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

USPTO Granted Patents = 14 

% Patents Active = 21.4

 

Average Co-Inventor Count = 2.7

ph-index = 3

Forward Citations = 17(Granted Patents)


Company Filing History:


Years Active: 2010-2016

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14 patents (USPTO):Explore Patents

Title: Keita Kaifu: Innovator in Optical Technology

Introduction

Keita Kaifu is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 14 patents. His work primarily focuses on advancements in zoom lenses and image processing technologies.

Latest Patents

Among his latest patents is a sophisticated zoom lens and optical apparatus. This invention features a first lens group with positive refractive power, a second lens group with negative refractive power, a third lens group with positive refractive power, and a fourth lens group that also has positive refractive power. The fourth lens group is composed of multiple sub-lens groups that facilitate smooth zooming and focusing. Another notable patent is an image pickup apparatus that includes a dimming device to adjust the light quantity of incident image pickup light. This apparatus is designed to maintain a constant color balance value in the image pickup signal, regardless of the light quantity.

Career Highlights

Keita Kaifu is currently employed at Sony Corporation, where he continues to innovate and develop cutting-edge optical technologies. His work has significantly impacted the way imaging systems operate, particularly in consumer electronics.

Collaborations

Throughout his career, Kaifu has collaborated with talented individuals such as Kazuhiro Tanaka and Yukihiro Sano. These collaborations have fostered a creative environment that has led to numerous advancements in optical technology.

Conclusion

Keita Kaifu's contributions to the field of optical technology are noteworthy and continue to influence the industry. His innovative patents and collaborations reflect his commitment to advancing imaging 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]
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