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For the Inventor, By the Inventor

Ome, Japan

Koji Osafune

This inventor holds 18 USPTO granted patents, primarily in Disk Drive Technology. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1987-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Osafune. Retrieved from https://idiyas.com/inventor/koji-osafune

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

Calculating rank
USPTO Granted Patents = 18

% Patents Active = 72.2

Average Co-Inventor Count = 1.9

ph-index = 7

Forward Citations = 254(Granted Patents)


Location History:

  • Nishitama, JP (1989)
  • Hamura, JP (1991)
  • Tokyo, JP (1987 - 2003)
  • Ome, JP (2002 - 2009)

Company Filing History:

goldMedal18 out of 53,286 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 1987-2009

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Areas of Expertise:
Disk Drive
Head Positioning
Magnetic Recording
Data Reproduction
Power Control
Servo Data
Noise Immunity
Temperature Variation
Read/Write Amplifier
Position Error Signal
Floppy Disc
Control Signals
18 patents (USPTO):Explore Patents
1. 7489468 - Method and apparatus for head positioning control in a disk drive (2009-02-10),
2. 7057844 - Method and apparatus for head positioning control in a disk drive (2006-06-06),
3. 7035036 - Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive (2006-04-25),
4. 7019936 - Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive (2006-03-28),
5. 7009792 - Method and apparatus for data reproducing in a disk drive (2006-03-07),
6. 6950259 - Disk drive with control of read and write gate signals for read and write operation (2005-09-27),
7. 6762895 - Magnetic disk drive and position error signal generation method (2004-07-13),
8. 6594102 - Apparatus and method for retracting the head on power down in a disk drive (2003-07-15),
9. 6396652 - Apparatus and method for control head unloading on power down in a disk drive (2002-05-28),
10. 6046876 - Head signal device with noise immunity function, for use in a disk (2000-04-04),
11. 5636088 - Head assembly controlling distortion due to temperature variation and (1997-06-03),
12. 5233481 - Magnetic recording and reproducing apparatus (1993-08-03),
13. 5038230 - Method of accurately executing read access and magnetic (1991-08-06),
14. 4931889 - Method and apparatus depending on the selected power source for (1990-06-05),
15. 4811126 - Recording/reproducing system for a magnetic recording medium including (1989-03-07),

Title: Innovator Spotlight: Koji Osafune, Pioneering Inventor in Disk Drive Technology

Introduction:

Koji Osafune, a prolific inventor hailing from Ome, Japan, is renowned for his groundbreaking work in the field of disk drive technology. With an impressive portfolio of 18 patents to his name, Osafune has consistently pushed the boundaries of innovation in the realm of head positioning control within disk drives.

Latest Patents:

Among his latest patents is the innovative "Method and apparatus for head positioning control in a disk drive." This cutting-edge technology allows for precise adjustment of head positioning in response to disk runout variations, ensuring optimal performance even in the face of external shocks or disk shifts. Osafune's inventive solutions have significantly enhanced the efficiency and reliability of disk drives, setting new standards in the industry.

Career Highlights:

Osafune's illustrious career is predominantly associated with Kabushiki Kaisha Toshiba, a leading multinational corporation recognized for its advancements in electronics and technology. At Toshiba, Osafune has spearheaded numerous projects aimed at refining head positioning mechanisms and optimizing disk drive functionality. His expertise and dedication have solidified his reputation as a trailblazer in the field.

Collaborations:

Throughout his career, Osafune has collaborated closely with esteemed colleagues such as Yuji Sakai and Masahiro Kusunoki. Together, they have synergized their talents and insights to drive innovation forward, fostering a dynamic environment conducive to groundbreaking discoveries and technological advancements.

Conclusion:

In conclusion, Koji Osafune stands as a pioneering figure in the realm of disk drive technology, with a remarkable track record of inventions that have reshaped the industry. His unwavering commitment to excellence and his visionary approach to problem-solving continue to inspire the next generation of inventors and innovators. Osafune's contributions have left an indelible mark on the world of technology, underscoring his status as a true trailblazer in the field of innovation.

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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