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Odawara-Shi, Japan

Hitachi Global Storage Technologies Japan, Ltd.

USPTO Granted Patents = 227

EPO Patents = 4

Forward Citations = 1,731

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343 inventors (with patents filed for the assignee):

Mikio Tokuyama (18 out of 76 patents)

Yasutaka Nishida (15 out of 80 patents)

Hisashi Takano (15 out of 107 patents)

4. Hideki Sawaguchi (13 out of 46 patents)

5. Takehiko Hamaguchi (13 out of 44 patents)

6. Yoshiaki Kawato (13 out of 39 patents)

7. Hiroyuki Hoshiya (10 out of 60 patents)

8. Kazuhiro Nakamoto (10 out of 31 patents)

9. Masafumi Mochizuki (10 out of 66 patents)

10. Ichiro Tamai (10 out of 36 patents)

11. Shigeo Nakamura (9 out of 108 patents)

12. Yoshiyuki Hirayama (9 out of 48 patents)

13. Nobuo Yoshida (9 out of 41 patents)

14. Toshihiko Shimizu (9 out of 69 patents)

15. Yuzuru Hosoe (9 out of 60 patents)

Core Competencies:

Magnetic Recording

Data Reproducing Apparatus

Thin Film Magnetic Head

Perpendicular Magnetic Recording

Signal Processing Circuit

Magnetic Disk Drive

Data Encryption

Storage Apparatus

227 patents: Sort by Forward Citations

1. 8345371 - Information storing device and method for controlling same to record/reproduce information by selecting one of working modes (2013-01-01),

2. 8144415 - Apparatus, signal-processing circuit and device for magnetic recording system (2012-03-27),

3. 8117518 - Signal processing apparatus and a data recording and reproducing apparatus including local memory processor (2012-02-14),

4. 8089717 - Data reproducing apparatus for improving data recording efficiency (2012-01-03),

5. 8085499 - Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it (2011-12-27),

6. 7982999 - Information storing device and method for controlling same to record/reproduce information by selecting one of working modes (2011-07-19),

7. 7903374 - Magnetic recording and reading device (2011-03-08),

8. 7885039 - Magnetic head supporting mechanism with regulating member which prevents over angulation of the slider support (2011-02-08),

9. 7865799 - Recording format for information date, information recording/reproducing cording circuit (2011-01-04),

10. 7839590 - Method of servo writing for magnetic recording system, magnetic recording system (2010-11-23),

11. 7817367 - Apparatus, signal-processing circuit and device for magnetic recording system (2010-10-19),

12. 7813079 - Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it (2010-10-12),

13. 7783895 - Method and apparatus for encrypting data to be secured and inputting/outputting the same (2010-08-24),

14. 7782566 - Magnetic recording and reading device (2010-08-24),

15. 7752461 - Storage apparatus that can properly recommence input and output of classified data (2010-07-06),

Hitachi Global Storage Technologies Japan, Ltd. is a leading provider of hard disk drives, solid state drives, and other data storage solutions for enterprise and consumer markets. With a strong focus on innovation and quality, Hitachi offers reliable and high-performance storage solutions to meet the evolving needs of businesses and individuals. Visit their website to learn more about their products and services.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

227 Patents

#1 in Odawara-Shi

#628 in Japan

#3,663 in the World

Odawara-Shi, Japan

Hitachi Global Storage Technologies Japan, Ltd.

Forward Citations = 1,731

343 inventors:

Mikio Tokuyama (18 out of 76 patents)

Yasutaka Nishida (15 out of 80 patents)

Hisashi Takano (15 out of 107 patents)

4. Hideki Sawaguchi (13 out of 46 patents)

5. Takehiko Hamaguchi (13 out of 44 patents)

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