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For the Inventor, By the Inventor

Kawasaki, Japan

Keiichi Kohno

This inventor holds 5 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1990-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiichi Kohno. Retrieved from https://idiyas.com/inventor/keiichi-kohno

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 5

Forward Citations = 50(Granted Patents)


Location History:

  • Yokohama, JP (1990)
  • Kawasaki, JP (1993 - 1999)

Company Filing History:

goldMedal5 out of 39,378 
 
Fujitsu Corporation
 patents

Years Active: 1990-1999

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5 patents (USPTO):Explore Patents
1. 5956200 - Method of and apparatus for controlling magnetic disc drive (1999-09-21),
2. 5831782 - Method and apparatus for supplying optimal bias current to a magnetic (1998-11-03),
3. 5193146 - Pulse width modulation control sytem for a motor (1993-03-09),
4. 4924165 - Servo control system carrying out coarse control and fine control (1990-05-08),
5. 4897743 - Method and apparatus for releasing a magnetic head (1990-01-30),

Title: Keiichi Kohno: Innovator in Magnetic Disc Drive Technology

Introduction

Keiichi Kohno is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of magnetic disc drive technology, holding a total of 5 patents. His work focuses on improving the efficiency and functionality of magnetic disc drives, which are essential components in data storage systems.

Latest Patents

Kohno's latest patents include a method and apparatus for controlling magnetic disc drives. This innovation involves a method that calculates the moving quantity to a designated target track position based on write or read instructions. It also accounts for a yaw angle offset quantity, ensuring precise positioning of the magnetic head. The control apparatus consists of two circuits: one for indicating a seek to a target track and another for calculating the necessary moving quantities to achieve accurate control of the rotary type actuator.

Another notable patent by Kohno is a method and apparatus for supplying optimal bias current to a magnetic disc drive. This invention similarly focuses on enhancing the control of magnetic heads, ensuring that they are accurately positioned for both writing and reading data.

Career Highlights

Kohno is currently employed at Fujitsu Corporation, where he continues to develop innovative solutions in the field of data storage technology. His expertise and contributions have positioned him as a key figure in advancing magnetic disc drive systems.

Collaborations

Throughout his career, Kohno has collaborated with notable colleagues, including Tsuyoshi Takahashi and Masayoshi Ishii. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Keiichi Kohno's work in magnetic disc drive technology exemplifies the spirit of innovation. His patents reflect a commitment to enhancing data storage solutions, making significant strides in the industry. His contributions will undoubtedly continue to influence the future of technology.

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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