Company Filing History:

9 out of 987

Hgst Netherlands, B.v.

patents

9 out of 5,310

Western Digital Technologies, Inc.

patents

3 out of 2,636

Hitachi Global Storage Technologies Netherlands B.v.

patents

Years Active: 2010-2025

where 'Filed Patents' based on already Granted Patents

21 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12431161 - Data storage device with track pitch determination for mitigating effects of servo pattern distortion (2025-09-30),

2. 12347468 - Energy-assisted magnetic recording data storage device with opportunistic boosted laser pre-biasing (2025-07-01),

3. 12277957 - Data storage device with embedded mode hop predictor patterns (2025-04-14),

4. 12100431 - Data storage device with symmetric split burst servo pattern (2024-09-24),

5. 12046265 - Data storage device with enhanced management of laser pre-bias and logic block addressing in heat-assisted magnetic recording (2024-07-23),

6. 11830524 - Data storage device with split burst servo pattern (2023-11-28),

7. 11587587 - Method to measure thermal protrusion by sensing spacing change due to pre-lasing (2023-02-21),

8. 11587586 - Determining laser induced thermal protrusion and laser threshold in heat-assisted magnetic recording (HAMR) data storage (2023-02-21),

9. 10923146 - Data storage device employing triangle-like dither to spread track squeeze (2021-02-16),

10. 8873183 - Disk drive and method of writing servo write tracks to a disk (2014-10-28),

11. 8743496 - Servo pattern compatible with planarization constraints of patterned media and use of a single master template (2014-06-03),

12. 8670207 - Servo pattern compatible with planarization constraints of patterned media and use of a single master template (2014-03-11),

13. 8630051 - Patterned media with an alternating series of concentric servo zones and overlap zones (2014-01-14),

14. 8625219 - Patterned media with an alternating series of concentric servo zones and overlap zones (2014-01-07),

15. 8619379 - Patterned media with an alternating series of concentric servo zones and overlap zones (2013-12-31),

Title: Kei Yasuna: Innovator in Data Storage Technology

Introduction: Kei Yasuna is a renowned inventor based in Fujisawa, Japan, known for his significant contributions to the field of data storage technology. With a total of 18 patents to his name, Yasuna has been instrumental in developing innovative solutions that enhance the efficiency and functionality of data storage devices.

Latest Patents: Yasuna's latest patents reflect his commitment to advancing data storage methodologies. One notable patent is for a "Data storage device with symmetric split burst servo pattern." This invention encompasses various aspects directed toward improving data storage devices, methods, and processing devices. It involves determining burst values from a servo pattern to generate a position error signal, thereby optimizing the positioning of data head mechanisms.

Another significant patent is the "Data storage device with enhanced management of laser pre-bias and logic block addressing in heat-assisted magnetic recording." This innovation includes a design featuring multiple disks and an actuator mechanism capable of precise head positioning. The processing devices work to select data sectors in alignment with data erosion patterns, improving data integrity during the writing process.

Career Highlights: Throughout his career, Kei Yasuna has collaborated with notable companies in the tech industry. He has contributed his expertise at HGST Netherlands B.V. and Western Digital Technologies, Inc., where he played a crucial role in advancing data storage technologies.

Collaborations: Yasuna has worked alongside talented individuals such as Masahito Kobayashi and Keiichiro Nonaka, contributing to groundbreaking innovations in the field of data storage.

Conclusion: Kei Yasuna stands out as a visionary inventor whose patents have significantly impacted the data storage industry. His work continues to push the boundaries of technology, ensuring that data storage solutions remain efficient and reliable in an increasingly digital world.

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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.