Keiichi Nakamura

This inventor holds 34 USPTO granted patents and 5 published patent applications, plus 5 CIPO patents and 11 EPO patents, primarily in Zoom Lens Technology. Top assignees: Hitachi, Ltd., Sumitomo Metal Industries, Inc., Nikon Corporation. Active years: 1985-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiichi Nakamura. Retrieved from https://idiyas.com/inventor/keiichi-nakamura-v8fchvoa

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

USPTO Granted Patents = 34 (Patent Applications = 5)

% Patents Active = 88.2

CIPO Patents = 5 (Patent Applications = 1)

EPO Patents = 11 (Patent Applications = 8)

Average Co-Inventor Count = 2.7

ph-index = 7

Forward Citations = 153(Granted Patents)

Location History:

Ebina, JP (1985)
Osaka, JP (2010 - 2013)
Wakayama, JP (2009 - 2017)
Yokohama, JP (2016 - 2019)
Tokyo, JP (1989 - 2024)
Kawasaki, JP (2001 - 2024)

Company Filing History:

Sumitomo Metal Industries, Inc.

Nippon Steel Sumitomo Metal Corporation

patents

5. 4 out of 53,276

Kabushiki Kaisha Toshiba

patents

6. 3 out of 149

Hitachi Powdered Metals Co., Ltd.

patents

7. 3 out of 169

Vallourec Oil and Gas France

patents

8. 2 out of 414

Fujitsu General Limited

Nippon Steel Corporation

patents

where one patent can have more than one assignee

Years Active: 1985-2025

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Areas of Expertise:

Zoom Lens

Optical Apparatus

Steel Material

Heat Recovery

Polymer Latex

Sintered Aluminum Alloy

Threaded Joint

Martensitic Stainless Steel

Power Plant

Imaging Apparatus

Fluid Pressure Device

Air Conditioner

34 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12435401 - Steel material (2025-10-07),

2. 12331137 - Method for producing purified chloroprene-based-polymer latex (2025-06-17),

3. 11994746 - Zoom lens, optical apparatus and method for manufacturing the zoom lens (2024-05-28),

4. 11891470 - Method for producing chloroprene-based-polymer latex (2024-02-06),

5. 11215790 - Zoom lens, optical apparatus and method for manufacturing the zoom lens (2022-01-04),

6. 10344627 - Heat recovery steam generator and power plant (2019-07-09),

7. 10101568 - Zoom lens, optical device, and method for manufacturing the zoom lens (2018-10-16),

8. 10087786 - Plant control apparatus and combined cycle power plant (2018-10-02),

9. 9719617 - Threaded joint for steel pipes (2017-08-01),

10. 9605781 - Threaded connection comprising at least one threaded element with an end lip for a metal tube (2017-03-28),

11. 9568125 - Threaded joint for steel pipes (2017-02-14),

12. 9528396 - Heat recovery steam generator and power plant (2016-12-27),

13. 9416686 - Heat recovery steam generator and power plant (2016-08-16),

14. 9351915 - Ascorbic acid derivative composition and production method of the same, ascorbic acid derivative solution, and skin external preparation (2016-05-31),

15. 9017494 - Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance (2015-04-28),

Title: Keiichi Nakamura: Pioneering Inventor from Kawasaki, JP

Introduction: Keiichi Nakamura is a renowned inventor hailing from Kawasaki, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Keiichi Nakamura holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to pushing the boundaries of scientific advancement.

Career Highlights: With a career spanning over two decades, Nakamura has worked with leading research institutions and tech companies, spearheading projects that have revolutionized various industries. His innovative solutions have earned him recognition globally.

Collaborations: Throughout his career, Keiichi Nakamura has collaborated with top engineers, scientists, and researchers, fostering a culture of innovation and knowledge-sharing. His collaborative efforts have led to the development of cutting-edge technologies that have had a lasting impact.

Conclusion: Keiichi Nakamura's relentless pursuit of innovation and his passion for creating solutions to complex challenges have solidified his position as a trailblazer in the world of inventions. His work continues to inspire future generations of inventors and innovators worldwide.

Profile summary based on public USPTO records.