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For the Inventor, By the Inventor

Tokyo, Japan

Yutaka Yamanaka

This inventor holds 47 USPTO granted patents and 2 published patent applications and 3 EPO patents, primarily in Optical Discs. Top assignees: Nec Corporation, Kabushiki Kaisha Toshiba, Sanyo Electric Co., Ltd.. Active years: 1989-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yutaka Yamanaka. Retrieved from https://idiyas.com/inventor/yutaka-yamanaka

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

USPTO Granted Patents = 47 

% Patents Active = 55.3


Average Co-Inventor Count = 1.4

ph-index = 12

Forward Citations = 536(Granted Patents)


Location History:

  • Tokyo, JP (1989 - 2012)
  • Minato-ku, JP (2013)

Company Filing History:

goldMedal47 out of 36,684 
 
Nec Corporation
 patents
silverMedal9 out of 53,262 
 
Kabushiki Kaisha Toshiba
 patents
bronzeMedal3 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents
4. 1 out of 193 
 
Toshiba Corporation
 patents
where one patent can have more than one assignee

Years Active: 1989-2013

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Areas of Expertise:
Optical Disc
Recording Method
Information Readout
Data Recording
Optical Head
Two-Layer Optical Disk
Digital Sum Value
Tilt Detection
Holographic Element
Magneto-Optical Head
Focus Control
Optical Storage
47 patents (USPTO):Explore Patents
1. 8391113 - Optical disc for tuple-speed recording and optical disc device for tuple-speed recording (2013-03-05),
2. 8331208 - Information readout device and information readout method (2012-12-11),
3. 7835256 - Two-layer optical disk and recording/reproducing optical disk apparatus of the two-layer optical disk (2010-11-16),
4. 7817528 - Optical disk medium and optical disk apparatus (2010-10-19),
5. 7791987 - Recording type optical disc medium and optical disc device for the same (2010-09-07),
6. 7643394 - Optical disk, optical disk recording method, and optical disk recording apparatus (2010-01-05),
7. 7551533 - Optical disk, optical disk drive and method of playing back an optical disk (2009-06-23),
8. 7492697 - Optical disc recording method and apparatus (2009-02-17),
9. 7492696 - Optical disk medium and optical disk apparatus (2009-02-17),
10. 7474599 - Optical disc medium, and apparatus and method for recording data on the same (2009-01-06),
11. 7471617 - Optical disc medium having extended record control data areas, optical disc apparatus using the same, and data recording method on the same (2008-12-30),
12. 7471602 - Recording/reproducing method and recording/reproducing apparatus and optical disk (2008-12-30),
13. 7391708 - Optical disc and method for reproducing the same (2008-06-24),
14. 7355957 - Optical disc medium having a system information recording area of low recording density (2008-04-08),
15. 7355942 - Optical disk and optical disk drive for suppressing a digital sum value and low-frequency components (2008-04-08),

Title: Yutaka Yamanaka: Pioneering Inventor from Tokyo

Introduction: Yutaka Yamanaka is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking innovations in various fields.

Latest Patents: Yutaka Yamanaka holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his diverse expertise and forward-thinking approach.

Career Highlights: With over two decades of experience in the industry, Yutaka Yamanaka has worked with leading research institutions and tech companies to develop cutting-edge solutions that have revolutionized the way we live and work.

Collaborations: Throughout his career, Yutaka Yamanaka has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and creativity in all his projects.

Conclusion: Yutaka Yamanaka's passion for pushing the boundaries of technology and his relentless pursuit of excellence continue to inspire the next generation of inventors and innovators worldwide.

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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