Koichi Yasuda

This inventor holds 18 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignees: Sony Corporation, Kawasaki Steel Corporation, Jfe Steel Corporation. Active years: 1986-2008.

USPTO Granted Patents = 18 (Patent Applications = 1)

% Patents Active = 83.3

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 2.3

ph-index = 8

Forward Citations = 275(Granted Patents)

Location History:

Okayama, JP (1998)
Kanagawa, JP (1997 - 2002)
Chiba, JP (1986 - 2004)
Tokyo, JP (1990 - 2008)

Company Filing History:

Kawasaki Steel Corporation

patents

1 out of 1,953

Jfe Steel Corporation

Years Active: 1986-2008

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7390546 - Optical recording medium (2008-06-24),

2. 6956809 - Multilayer phase-change type optical disc capable of recording and reproducing information at high transfer rate (2005-10-18),

3. 6784402 - Steel wire for MAG welding and MAG welding method using the same (2004-08-31),

4. 6574180 - Multilayer optical disk and method of initializing the same (2003-06-03),

5. 6511788 - Multi-layered optical disc (2003-01-28),

6. 6434108 - Optical disc having narrow recording track relative to light spot diameter (2002-08-13),

7. 6246656 - Reduced thickness of a light transmissive layer for a high density optical disc (2001-06-12),

8. 6221455 - Multi-layer optical disc and recording/reproducing apparatus (2001-04-24),

9. 5972459 - Optical recording medium and optical disk apparatus (1999-10-26),

10. 5923639 - Phase-change optical recording medium having an additive related to the (1999-07-13),

11. 5837956 - Method of fabricating high strength and high toughness large-diameter (1998-11-17),

12. 5768221 - Method of and apparatus for initializing multi-layer optical recording (1998-06-16),

13. 5741603 - Optical disc (1998-04-21),

14. 5657310 - Optical disc (1997-08-12),

15. 5019460 - Galvannealed steel sheet having improved spot-weldability (1991-05-28),

Title: Koichi Yasuda: Innovator in Optical Recording Technology

Introduction

Koichi Yasuda is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical recording technology, holding a total of 18 patents. His work has advanced the capabilities of optical media, enhancing data storage and retrieval processes.

Latest Patents

Yasuda's latest patents include an innovative optical recording medium. This medium features a substrate with a concave and convex shape that divides a track area on its surface. The optical recording layer consists of a compound made of tin (Sn), nitrogen (N), and oxygen (O). This arrangement improves jitter issues associated with using Sn as a recording material. Another notable patent is for a multilayer phase-change type optical disc. This disc is designed to record and reproduce information at high transfer rates, utilizing a phase change recording material that includes antimony (Sb) and tellurium (Te) as major components.

Career Highlights

Throughout his career, Yasuda has worked with notable companies such as Sony Corporation and Kawasaki Steel Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in optical technology.

Collaborations

Yasuda has collaborated with esteemed colleagues, including Kotaro Kurokawa and Osamu Kawakubo. Their joint efforts have contributed to the advancement of optical recording technologies.

Conclusion

Koichi Yasuda's contributions to optical recording technology have made a lasting impact on the industry. His innovative patents and collaborations reflect his dedication to advancing data storage solutions.