Keiji Nakatsu

This inventor holds 8 USPTO granted patents, plus 2 CIPO patents and 3 EPO patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Corporation, Teac Corporation. Active years: 1988-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Nakatsu. Retrieved from https://idiyas.com/inventor/keiji-nakatsu

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

USPTO Granted Patents = 8

% Patents Active = 87.5

CIPO Patents = 2

EPO Patents = 3 (Patent Applications = 3)

Average Co-Inventor Count = 2.3

ph-index = 5

Forward Citations = 77(Granted Patents)

Location History:

Hyogo, JP (1989)
Amagasaki, JP (1988 - 1993)
Tokyo, JP (2012)

Company Filing History:

5 out of 21,351

Mitsubishi Denki Kabushiki Kaisha

patents

3 out of 16,602

Mitsubishi Electric Corporation

where one patent can have more than one assignee

Years Active: 1988-2012

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8285430 - Controlling device for railway electric car (2012-10-09),

2. 8280568 - Electric train car controlling device (2012-10-02),

3. 5264911 - Laser power measuring jig for optical disk unit (1993-11-23),

4. 4955009 - Optical disk drive apparatus having counter disable at seek start-up (1990-09-04),

5. 4901299 - Optical disk reading head controller (1990-02-13),

6. 4887254 - Optical disk drive device for positioning a carriage to a retract (1989-12-12),

7. 4835752 - Device for driving and controlling optical head for use in optical disk (1989-05-30),

8. 4788421 - Apparatus for controlling relative movement of an optical head to an (1988-11-29),

Title: The Innovative Journey of Keiji Nakatsu

Introduction: Keiji Nakatsu, a pioneering inventor hailing from Amagasaki, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Keiji Nakatsu's most recent patents focus on advancements in renewable energy technologies, particularly in the field of solar power generation and energy storage solutions.

Career Highlights: With a career spanning over two decades, Keiji Nakatsu has established himself as a leading figure in the innovation landscape. His work has been instrumental in shaping the future of sustainable energy and environmental conservation.

Collaborations: Throughout his career, Keiji Nakatsu has collaborated with top research institutions and leading technology companies to bring his inventions to life. His partnerships have led to the development of cutting-edge technologies that have revolutionized the way we harness and utilize energy.

Conclusion: Keiji Nakatsu's relentless pursuit of innovation and his passion for creating a more sustainable future have cemented his legacy as a visionary inventor. His work continues to inspire generations of inventors and researchers to push the boundaries of what is possible in the world of technology.

Profile summary based on public USPTO records.