Seiji Yonezawa

This inventor holds 44 USPTO granted patents, primarily in Optical Information Technology. Top assignees: Hitachi, Ltd., Hitachi Maxell, Limited. Active years: 1978-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Yonezawa. Retrieved from https://idiyas.com/inventor/seiji-yonezawa

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

USPTO Granted Patents = 44

% Patents Active = 95.5

Average Co-Inventor Count = 3.6

ph-index = 18

Forward Citations = 909(Granted Patents)

Location History:

Hachioji, JA (1978)
Hachiouji, JP (1982 - 1989)
Hachioji, JP (1980 - 2003)

Company Filing History:

Hitachi Maxell, Limited

patents

where one patent can have more than one assignee

Years Active: 1978-2003

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Areas of Expertise:

Optical Reproduction

Information Recording

Magneto-Optical

Tracking Servo System

Optical Disk

Hologram Lens

Pattern Forming

Data Recording

Laser Beam Correction

Optical Information Processor

Composite Tracking

Sampled Servo

44 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6614737 - Optical reproduction method and optical information device (2003-09-02),

2. 6442120 - Optical reproduction method and optical information device (2002-08-27),

3. 6205098 - Optical reproduction method and optical information apparatus (2001-03-20),

4. 5959943 - Information recording medium with clock information therein (1999-09-28),

5. 5886958 - Information recording apparatus and method for modulated magneto-optical (1999-03-23),

6. 5726955 - Magneto optical recording medium apparatus and method utilizing light (1998-03-10),

7. 5579292 - Magneto-optical data recording apparatus using a sample-servo system for (1996-11-26),

8. 5473581 - Magneto-optical data recording system continuously irradiating optical (1995-12-05),

9. 5348837 - Projection exposure apparatus and pattern forming method for use (1994-09-20),

10. 5296995 - Method of magnetically recording and reading data, magnetic recording (1994-03-22),

11. 5170383 - Magneto-optical data recording system (1992-12-08),

12. 5150339 - Optical disk medium and its application method and system (1992-09-22),

13. 5134426 - Optical device for generating pattern having uniform light intensity (1992-07-28),

14. 4949325 - Method and associated apparatus and medium for optical recording and (1990-08-14),

15. 4872152 - Light spot position control system and method by sampled servo (1989-10-03),

Title: The Innovative Mind of Seiji Yonezawa

Introduction: Seiji Yonezawa, a pioneering inventor hailing from Hachioji, Japan, is renowned for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Seiji Yonezawa's recent patents focus on advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to creating a more efficient and sustainable future.

Career Highlights: With a career spanning over two decades, Seiji Yonezawa has worked with leading tech companies and research institutions to develop cutting-edge technologies that have revolutionized various industries. His innovative spirit and dedication to pushing the boundaries of what is possible have earned him recognition as a visionary in the field of invention.

Collaborations: Throughout his career, Seiji Yonezawa has collaborated with top engineers, scientists, and researchers from around the world, fostering a culture of innovation and knowledge-sharing. His collaborative efforts have led to the development of groundbreaking technologies that have had a lasting impact on society.

Conclusion: Seiji Yonezawa's relentless pursuit of innovation and his passion for creating technologies that make a difference have solidified his reputation as a trailblazer in the world of invention. His work continues to inspire future generations of inventors to push the boundaries of what is possible and create a better world through innovation.

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]