Hachioji, Japan

Katsumi Ohtsuka

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Konica Minolta Opto, Inc., Konica Corporation. Active years: 2003-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Ohtsuka. Retrieved from https://idiyas.com/inventor/katsumi-ohtsuka

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

USPTO Granted Patents = 3 

% Patents Active = 33.3

Average Co-Inventor Count = 2.4

ph-index = 2

Forward Citations = 15(Granted Patents)


Company Filing History:


Years Active: 2003-2011

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3 patents (USPTO):Explore Patents

Title: Innovations of Katsumi Ohtsuka

Introduction

Katsumi Ohtsuka is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of optical devices, holding a total of 3 patents. His work primarily focuses on advancements in lens technology and drive mechanisms.

Latest Patents

Ohtsuka's latest patents include a drive device, lens barrel, image pickup apparatus, lens drive method, and a method of producing shape memory alloy. The drive device he developed features a lens group that guides light from a subject. It incorporates a shape memory alloy that deforms when electricity is supplied, allowing for precise movement of the lens group along the optical axis. Additionally, the device includes electricity-supply controlling means to regulate the amount of electricity supplied, along with detecting means to monitor the movement of the lens group.

The lens barrel patent describes a structure that holds a lens group and utilizes a string-formed shape memory alloy element to facilitate movement in the optical axis direction. This innovative design enhances the functionality and efficiency of optical devices.

Career Highlights

Throughout his career, Katsumi Ohtsuka has worked with prominent companies such as Konica Minolta Opto, Inc. and Konica Corporation. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the optical field.

Collaborations

Ohtsuka has collaborated with talented individuals, including Tohru Horiuchi and Saori Hirata. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Katsumi Ohtsuka's contributions to optical technology through his patents and collaborations highlight his role as an influential inventor. His innovative designs continue to impact 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]
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