Company Filing History:

17 out of 42,485

Hitachi, Ltd.

patents

1 out of 227

Hitachi Global Storage Technologies Japan, Ltd.

patents

Years Active: 1987-2007

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7242656 - Disk system and power-on sequence for the same (2007-07-10),

2. 6898047 - Magnetic disk drive for compensating repeatable runout error (2005-05-24),

3. 6625690 - Disk system and power-on sequence for the same (2003-09-23),

4. 6590729 - Magnetic disk drive with servo signal decoder using amplitude detection and phase detection system (2003-07-08),

5. 6286108 - Disk system and power-on sequence for the same (2001-09-04),

6. 6131142 - Disk system and power-on sequence for the same (2000-10-10),

7. 6012124 - Disk system with activation control of disk drive motors (2000-01-04),

8. 5748398 - Method for writing servo signals onto a magnetic disk and magnetic disk (1998-05-05),

9. 5673412 - Disk system and power-on sequence for the same (1997-09-30),

10. 5572699 - Variable length data in a parallel disk array (1996-11-05),

11. 5568331 - Method of head positioning and magnetic recording disk drive using the (1996-10-22),

12. 5548454 - Information recording disk, its production method and recording apparatus (1996-08-20),

13. 5325364 - Method for error correction and circuit for realizing same (1994-06-28),

14. 5193034 - Magnetic disk apparatus of constant-density recording type, magnetic (1993-03-09),

15. 5132854 - High speed seek sector servo magnetic disk drive unit (1992-07-21),

Title: **Yosuke Seo: Innovator in Disk Drive Technology**

Introduction

Yosuke Seo, an esteemed inventor based in Sagamihara, Japan, has made significant contributions to the field of disk drive technology. With 18 patents to his name, Seo has been at the forefront of innovations that enhance data storage systems, making them more efficient and reliable.

Latest Patents

Among his most recent patents is a cutting-edge disk system and power-on sequence designed to optimize the startup process of disk drives powered by a single power source. This innovation involves a systematic approach where power is first supplied to a designated group of master disks, ensuring that the current requirement is within the limits of the power source's capacity. Once these disks reach a steady state, the subsequent group is powered on, preventing simultaneous seek operations and minimizing peak current demands.

Another notable patent by Seo addresses the compensation of repeatable runout errors in magnetic disk drives. By employing precise measurements and compensating for variations in track positioning, his technology allows for the operation of narrower track pitches while maintaining data integrity. This is achieved by calculating and storing compensatory signals based on the sensitivity characteristics of the tracking control system.

Career Highlights

Yosuke Seo has garnered substantial experience throughout his career, working with prominent companies such as Hitachi, Ltd. and Hitachi Global Storage Technologies Japan, Ltd. His expertise in disk drive technologies has proven invaluable in developing efficient data storage solutions that cater to the evolving needs of the industry.

Collaborations

In addition to his individual achievements, Seo has collaborated with notable professionals in the field, including Yoshihisa Kamo and Hitoshi Kakuta. These collaborations reflect a commitment to pushing the boundaries of disk drive technology through shared knowledge and innovative thinking.

Conclusion

Yosuke Seo stands out as a key figure in the realm of disk drive innovations. His extensive work, backed by numerous patents and collaborations with esteemed colleagues, has not only advanced technology but has also set the stage for future innovations in data storage. As the demand for efficient and reliable data management continues to grow, Seo's contributions will undoubtedly play a pivotal role in shaping the future of this industry.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.