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For the Inventor, By the Inventor

Fussa, Japan

Yasuhiko Ichikawa

This inventor holds 11 USPTO granted patents. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1998-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhiko Ichikawa. Retrieved from https://idiyas.com/inventor/yasuhiko-ichikawa

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 11

% Patents Active = 63.6

Average Co-Inventor Count = 2.1

ph-index = 5

Forward Citations = 108(Granted Patents)


Location History:

  • Tokyo, JP (1998 - 2001)
  • Hamura, JP (2006)
  • Fussa, JP (2011 - 2012)

Company Filing History:

goldMedal11 out of 53,276 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 1998-2012

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11 patents (USPTO):Explore Patents
1. 8154814 - Method of refreshing data stored on a disk (2012-04-10),
2. 7986489 - Disk controller, disk drive device, and disk control method (2011-07-26),
3. 7925828 - Magnetic disk drive refreshing data written to disk and data refreshment method applied to magnetic disk drive (2011-04-12),
4. 7870460 - Magnetic disk drive capable of refreshing data written to disk and data refresh method (2011-01-11),
5. 7864486 - Hard disc apparatus and head alignment method (2011-01-04),
6. 7085965 - Apparatus and method for accessing a disk containing an alternate sector (2006-08-01),
7. 6332196 - Disk storage apparatus and power supply control method for the same (2001-12-18),
8. 6018788 - Data access control for disk system using a limit value and count value (2000-01-25),
9. 5890210 - Magnetic disk apparatus and command processing method thereof (1999-03-30),
10. 5758191 - Method for buffer management in a disk drive having a first segment for (1998-05-26),
11. 5727232 - Disk system having buffer with designated area to be used for repeat (1998-03-10),

Title: Yasuhiko Ichikawa: Innovator in Disk Technology

Introduction

Yasuhiko Ichikawa is a prominent inventor based in Fussa, Japan. He has made significant contributions to the field of disk technology, holding a total of 11 patents. His innovative work has paved the way for advancements in data storage and retrieval methods.

Latest Patents

Ichikawa's latest patents include a method of refreshing data stored on a disk. This method involves a disk that is partitioned into a first segment and multiple second segments. A controller detects which segment needs refreshing and saves the data from the second segment into the first segment accordingly. Another notable patent is for a disk controller, which includes a receiver, a read-modify-write controller, and a wait controller. This invention allows for efficient data writing to a disk medium while managing the timing of operations effectively.

Career Highlights

Yasuhiko Ichikawa is associated with Kabushiki Kaisha Toshiba, a leading company in technology and electronics. His work at Toshiba has been instrumental in developing cutting-edge solutions for data management and storage.

Collaborations

Ichikawa has collaborated with notable colleagues such as Akio Mizuno and Takao Aoki. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Yasuhiko Ichikawa's contributions to disk technology exemplify his innovative spirit and dedication to advancing data storage solutions. His patents reflect a deep understanding of the complexities involved in disk operations, making him a key figure in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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