Company Filing History:

20 out of 52,711

Kabushiki Kaisha Toshiba

patents

13 out of 1,502

Toshiba Electronic Devices & Storage Corporation

where one patent can have more than one assignee

Years Active: 2000-2025

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23 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12249354 - Magnetic disk device with recording current arrangement (2025-03-11),

2. 12002495 - Magnetic disk device and method of adjusting preheat time (2024-06-04),

3. 11984143 - Magnetic disk device with magnetic disk overwrite characteristics arrangement (2024-05-14),

4. 11651782 - Magnetic disk device with magnetic head size arrangement (2023-05-16),

5. 11646051 - Magnetic disk device and refresh threshold setting method (2023-05-09),

6. 11437069 - Magnetic recording and reproducing device (2022-09-06),

7. 11354042 - Magnetic disk device and method of setting data format (2022-06-07),

8. 11276421 - Energy-assisted magnetic recording device (2022-03-15),

9. 10997999 - Information processing apparatus with switching circuit on power supply for disk device (2021-05-04),

10. 10984820 - Magnetic disk device having multiple writers with writing current of different frequencies (2021-04-20),

11. 10803887 - Magnetic disk drive and recording method for magnetic disk drive (2020-10-13),

12. 10650858 - Switching circuit on power supply for magnetic disk recording device (2020-05-12),

13. 10490223 - Magnetic disk device and refresh processing method (2019-11-26),

14. 9548071 - Storage apparatus, controller and control method (2017-01-17),

15. 9093085 - Laser controller for heat-assisted magnetic recording device (2015-07-28),

Title: Hiroshi Isokawa: A Pioneer in Magnetic Disk Technology

Introduction: Hiroshi Isokawa, located in Yokohama, Kanagawa, Japan, is a distinguished inventor known for his significant contributions to magnetic disk technology. With a total of 22 patents to his name, Isokawa has led the advancement of innovative solutions in data storage and retrieval.

Latest Patents: Among his latest patents is the invention of a magnetic disk device and a method of adjusting preheat time. This device employs multiple magnetic heads, each equipped with a heat-assist unit that applies a carefully controlled preheating current. This innovative feature ensures that previously written data remains intact while optimizing the recording process.

Another notable patent addresses the arrangement of magnetic disk devices with magnetic disk overwrite characteristics. In this invention, Isokawa highlights how the width of the magnetic pole of the magnetic head affects its placement relative to the center of the magnetic disks, thereby enhancing reading and writing efficiency.

Career Highlights: Isokawa has garnered extensive experience during his career, significantly impacting the field of data storage. He has worked with prominent companies, including Kabushiki Kaisha Toshiba and Toshiba Electronic Devices & Storage Corporation, where he honed his skills and applied his inventive talents.

Collaborations: Throughout his career, Isokawa has collaborated with talented individuals such as Tomoko Taguchi and Yukio Abe. These collaborations have undoubtedly contributed to the successful development of his innovative technologies, leading to impactful advancements in magnetic disk devices.

Conclusion: Hiroshi Isokawa stands out as a key figure in the world of magnetic disk technology. His numerous patents reflect his dedication to innovation and his profound understanding of complex data storage mechanisms. As the industry continues to evolve, Isokawa's contributions serve as a foundation for future advancements in this critical field.

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