logo

For the Inventor, By the Inventor

Tama, Japan

Fumio Nagase

This inventor holds 26 USPTO granted patents, primarily in Magnetic Storage Technology. Top assignee: Teac Corporation. Active years: 1987-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumio Nagase. Retrieved from https://idiyas.com/inventor/fumio-nagase

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

Calculating rank
USPTO Granted Patents = 26

% Patents Active = 96.2

Average Co-Inventor Count = 1.9

ph-index = 8

Forward Citations = 141(Granted Patents)


Location History:

  • Tokyo, JP (1993 - 1994)
  • Tama, JP (1987 - 2000)
  • Mitaka, JP (1995 - 2005)

Company Filing History:

goldMedal26 out of 1,030 
 
Teac Corporation
 patents

Years Active: 1987-2005

Loading Chart...
Areas of Expertise:
Optical Disk Drive
Magnetic Head
Thermally Stable Assembly
Gimbal Seat
Printed Circuit Board
Disk Recording Apparatus
Noise Elimination
Track Counter
Floppy Disk Control
Head Cartridge
Magnetic Data Transfer
Flexible Magnetic Disk
26 patents (USPTO):Explore Patents
1. 6859426 - Optical disk drive unit (2005-02-22),
2. 6097576 - Magnetic head (2000-08-01),
3. 5771137 - Thermally stable magnetic head assembly with magnetic head legs bonded (1998-06-23),
4. 5473487 - Magnetic head gimbal seat damped against unwanted oscillation and (1995-12-05),
5. 5442504 - Head supporting device of magnetic disk system (1995-08-15),
6. 5414576 - Space saving configuration of a printed cirucit board for a magnetic (1995-05-09),
7. 5396375 - Dual head type magnetic disc recording/reproducing apparatus (1995-03-07),
8. 5343344 - Connection of transducer leads to a printed circuit board in rotating (1994-08-30),
9. 5329510 - Method and apparatus for discriminating between unformatted magnetic (1994-07-12),
10. 5325250 - Magnetic head (1994-06-28),
11. 5323371 - Disk storage in which direction of inserting disk is approximately (1994-06-21),
12. 5315450 - Dual head type magnetic disk recording/reproducing apparatus (1994-05-24),
13. D346808 - Magnetic head carriage (1994-05-10),
14. 5309628 - Assembling position adjusting mechanism of a spindle motor for a (1994-05-10),
15. 5309296 - System for eliminating noise arising from difference in polarity of (1994-05-03),

Title: Innovations and Contributions of Fumio Nagase

Introduction

Fumio Nagase, a prolific inventor from Tama, Japan, has made significant contributions to the fields of optical and magnetic storage technologies. With a remarkable portfolio of 26 patents, his work has greatly influenced the efficiency and performance of data recording devices.

Latest Patents

Among his recent innovations are two noteworthy patents: the Optical Disk Drive Unit and the Miniaturized Magnetic Head. The Optical Disk Drive Unit features a sophisticated write power calibration mechanism that enhances recording accuracy by assessing characteristic values obtained from a test area of the optical disk. This innovative approach reduces the effects of periodic variations in the optical disk, allowing for more precise settings of the optimum write power.

The Miniaturized Magnetic Head, on the other hand, is designed to diminish the running torque required by the disk driving motor, all while maintaining effective head-touch and penetration margins. This device comprises a slider that operates on flexible magnetic disks and integrates a head core for efficient information recording and reproduction. Its specially designed groove, which measures less than 0.4 mm in width, facilitates high-performance functionality in a compact form factor.

Career Highlights

Fumio Nagase's career is marked by his tenure at Teac Corporation, a company recognized for its advancements in data recording technologies. His innovative spirit and technical expertise have not only led to his substantial patent portfolio but also positioned him as a key contributor to the growth of the industry.

Collaborations

Throughout his career, Fumio has had the opportunity to collaborate with esteemed coworkers such as Hiroshi Tsuyuguchi and Shinichi Aikawa. These partnerships have allowed for the exchange of ideas and have fostered an environment conducive to innovation and technological advancement.

Conclusion

Fumio Nagase stands out as a notable inventor whose work continues to impact the fields of optical and magnetic storage technology. His ability to develop innovative solutions, combined with his collaboration with talented colleagues, showcases his dedication to enhancing data recording methods. As technologies evolve, the influence of his contributions will undoubtedly persist in shaping the future of data storage.

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]
Loading…