Tamotsu Yamagami

This inventor holds 83 USPTO granted patents, plus 5 CIPO patents and 2 EPO patents, primarily in Optical Information Recording (CPC class 369 59). Top assignees: Sony Corporation, Koninklijke Philips Corporation N.v., Matsushita Electric Industrial Co., Ltd.. Active years: 1983-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tamotsu Yamagami. Retrieved from https://idiyas.com/inventor/tamotsu-yamagami

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

Calculating rank

USPTO Granted Patents = 83

% Patents Active = 90.4

CIPO Patents = 5

EPO Patents = 2 (Patent Applications = 1)

Average Co-Inventor Count = 3.0

ph-index = 18

Forward Citations = 1,000(Granted Patents)

Forward Citations (Not Self Cited) = 897(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Kanagwa, JP (1998)
Kanagawa-ken, JP (1996 - 1999)
Kawasaki, JP (2007)
Tokyo, JP (1985 - 2010)
Kanagawa, JP (1983 - 2019)

Company Filing History:

Koninklijke Philips Corporation N.v.

patents

6 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

4. 4 out of 16,454

Panasonic Corporation

patents

5. 1 out of 21

Koninklijke Philips Electronics N.v.

patents

where one patent can have more than one assignee

Years Active: 1983-2019

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Areas of Expertise:

Connector System

Optical Disk

Data Recording

Reproducing Device

Recording Medium

Phase-Change Optical Medium

High Speed Data Recording

Information Recording Device

Disc Driving Device

Optical Information Processing

Disc Producing Method

Address Information Recording

83 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10200122 - Connector system, connecting cable and receiving tool (2019-02-05),

2. 9749048 - Connector system, connecting cable and receiving tool (2017-08-29),

3. 9246588 - Connector system, connecting cable and receiving tool (2016-01-26),

4. 8565055 - Method of, and apparatus for, recording address information to disc medium (2013-10-22),

5. 8305856 - Disk-shaped record medium and producing method for same, disk recording method and device, and disk playback method and device (2012-11-06),

6. 8270267 - Method of, and apparatus for, recording address information to disc medium (2012-09-18),

7. 7975206 - Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium (2011-07-05),

8. 7965604 - Method of, and apparatus for, recording address information to disc medium (2011-06-21),

9. 7913146 - Optical disk manufacturing method and device, optical disk, and reproduction method thereof (2011-03-22),

10. 7861142 - Information recording disc, recording and/or reproducing device and method (2010-12-28),

11. 7698622 - Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium (2010-04-13),

12. 7624331 - Information recording disc, recording and/or reproducing device and method (2009-11-24),

13. 7616552 - Phase-change optical recording medium having first and second track pitches (2009-11-10),

14. 7613986 - Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium (2009-11-03),

15. 7454688 - Information recording disc, recording and/or reproducing device and method (2008-11-18),

Title: The Innovative Mind of Tamotsu Yamagami

Introduction:

Tamotsu Yamagami, a visionary inventor based in Kanagawa, Japan, has left a significant mark in the realm of innovation. With a total of 83 patents under his name, Yamagami's work showcases a blend of creativity and technological finesse that sets him apart as a true pioneer in his field.

Latest Patents:

Yamagami's recent patents highlight his knack for developing cutting-edge solutions in the realm of communication devices. One such invention is the Connector system, connecting cable and receiving tool. This innovation allows for wireless communication between devices in a non-contact manner, revolutionizing the way tools can be attached and detached without the risk of terminal damage.

Career Highlights:

Throughout his career, Yamagami has made significant contributions to renowned companies such as Sony Corporation and Koninklijke Philips Corporation N.V. His innovative spirit and commitment to excellence have led to transformative advancements in technology, particularly in the field of communication and connectivity.

Collaborations:

Yamagami's collaborative efforts with esteemed coworkers like Yoichiro Sako and Shoei Kobayashi have further enriched his innovative journey. Together, they have combined their expertise to push the boundaries of what is possible in the realm of technology, resulting in patents that have made a lasting impact on the industry.

Conclusion:

In conclusion, Tamotsu Yamagami stands as a beacon of innovation, with a relentless drive to create solutions that shape the future. His impressive portfolio of patents and collaborations speak to his unwavering commitment to excellence and his profound influence on the world of technology. Yamagami's inventive prowess continues to inspire and pave the way for the next generation of innovators.

Profile summary based on public USPTO records.