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For the Inventor, By the Inventor

Kanagawa, Japan

Keishi Takahashi

This inventor holds 18 USPTO granted patents, primarily in Magnetic Disk Drives. Top assignees: International Business Machines Corporation, Hitachi Global Storage Technologies Netherlands B.v., Hgst Netherlands, B.v.. Active years: 1987-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keishi Takahashi. Retrieved from https://idiyas.com/inventor/keishi-takahashi

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 = 61.1

Average Co-Inventor Count = 4.1

ph-index = 7

Forward Citations = 106(Granted Patents)


Location History:

  • Kanagawa-ken, JP (2003)
  • Kanagawa, JP (2008 - 2009)
  • Fujisawa, JP (1987 - 2013)

Company Filing History:

goldMedal9 out of 166,425 
 
International Business Machines Corporation
 patents
silverMedal8 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
bronzeMedal1 out of 987 
 
Hgst Netherlands, B.v.
 patents

Years Active: 1987-2013

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Areas of Expertise:
Magnetic Disk Drives
Data Transfer
Optimization Techniques
Actuator Mechanisms
Manufacturing Methods
Storage Devices
Shock Measurement
Load/Unload Areas
Flexible Cable Structures
Temperature Compensation
Head Assembly
Suspension Assembly
18 patents (USPTO):Explore Patents
1. 8526132 - Servo patterning compatible with planarization of patterned magnetic disks (2013-09-03),
2. 7620740 - Storage devices and method of transferring file between the devices (2009-11-17),
3. 7542223 - Magnetic disk drive using load/unload area for data storage (2009-06-02),
4. 7457065 - Systems and methods for hard disk drive optimization and manufacturing (2008-11-25),
5. 7426088 - Magnetic disk drive with function assignment and manufacturing method therefor (2008-09-16),
6. 7379396 - Rotary disk type storage device (2008-05-27),
7. 6900956 - Disk device and data-erasing method (2005-05-31),
8. 6643087 - Disk drive with improved retract circuit and method (2003-11-04),
9. 6639758 - Disk drive apparatus including a load/unload ramp with different angles for standard and depopulated versions (2003-10-28),
10. 6593855 - Shock measurement apparatus and shock measurement method (2003-07-15),
11. 6532137 - Head assembly, disk drive apparatus, hard disk drive and method for manufacturing disk drive apparatus (2003-03-11),
12. 6362936 - Suspension assembly with integral projections having a coating of elastic material (2002-03-26),
13. 6163440 - Inertial latch mechanism for actuator of disk drive device (2000-12-19),
14. 6137658 - Apparatus for guiding and locking a rotary actuator (2000-10-24),
15. 5896242 - Spindle motor with stress alleviating groove provided in hub cylindrical (1999-04-20),

Title: Keishi Takahashi: Innovator in Magnetic Disk Technology

Introduction

Keishi Takahashi is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of magnetic disk technology, holding a total of 18 patents. His innovative work has paved the way for advancements in data storage and transfer methods.

Latest Patents

One of Takahashi's latest patents is titled "Servo patterning compatible with planarization of patterned magnetic disks." This invention illustrates a method of creating patterned servo data that allows for a simplified planarization process of magnetic disks. The magnetic disk features a data region with multiple tracks and servo bursts that help center the write head over the track for accurate data writing. The servo bursts consist of magnetic lands and nonmagnetic grooves, designed with uniform widths to enhance performance.

Another notable patent is "Storage devices and method of transferring file between the devices." This invention enables direct file transfers between a parent magnetic-disk device and a child magnetic-disk device without the need for a host computer. The parent device operates in a host mode, allowing for efficient file transfers controlled by a microprocessor.

Career Highlights

Throughout his career, Keishi Takahashi has worked with leading companies in the technology sector. He has been associated with IBM and Hitachi Global Storage Technologies, where he has contributed to various projects and innovations in data storage solutions.

Collaborations

Takahashi has collaborated with notable professionals in his field, including Hiroshi Matsuda and Mutsuro Ohta. These collaborations have further enriched his work and contributed to the advancements in magnetic disk technology.

Conclusion

Keishi Takahashi's contributions to magnetic disk technology through his patents and collaborations have significantly impacted the industry. His innovative approaches continue to influence the development of data storage solutions.

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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