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For the Inventor, By the Inventor

Hanazono, Japan

Tetsu Ogawa

This inventor holds 6 USPTO granted patents. Top assignee: Canon Denshi Kabushiki Kaisha. Active years: 1986-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsu Ogawa. Retrieved from https://idiyas.com/inventor/tetsu-ogawa-9o6wrx7e

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 4

Forward Citations = 41(Granted Patents)


Location History:

  • Hanazono, JP (1986 - 1988)
  • Hanazono-machi, JP (1998)

Company Filing History:

goldMedal6 out of 318 
 
Canon Denshi Kabushiki Kaisha
 patents

Years Active: 1986-1998

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6 patents (USPTO):Explore Patents
1. 5757583 - Disc drive having automatic clamp and disc ejection arrangements (1998-05-26),
2. 4792920 - Interface providing impedance matching by selective connection of a (1988-12-20),
3. 4733314 - Disc unit including automatic ejection upon misinsertion detection (1988-03-22),
4. 4694421 - Interface system which selectively provides impedance matching between a (1987-09-15),
5. 4670802 - System for controlling loading and ejection of recording medium on a (1987-06-02),
6. 4628376 - Magnetic disc unit (1986-12-09),

Title: Tetsu Ogawa: Innovator in Disc Drive Technology

Introduction

Tetsu Ogawa is a notable inventor based in Hanazono, Japan. He has made significant contributions to the field of disc drive technology, holding a total of six patents. His innovative designs have enhanced the functionality and efficiency of disc drives used in various applications.

Latest Patents

One of Ogawa's latest patents is for a disc drive featuring automatic clamp and disc ejection arrangements. This invention includes a disc driving mechanism that operates with a disc-shaped recording medium. It also incorporates a clamping mechanism that secures the recording medium on the disc mounting surface. A further driving mechanism is designed to move the clamping mechanism into a position that maintains the clamping of the recording medium. Additionally, a motor drives this mechanism, while a manually operated feature allows for the ejection of the recording medium from the disc drive.

Another significant patent involves an interface that provides impedance matching through selective connection. This system consists of multiple signal lines linked between input terminals of a control circuit and output terminals of a host computer. The design includes resistor elements that connect to the signal lines and a pair of terminals that can be short-circuited by a jumper. This innovative approach allows for electrical interruption without the need to physically remove the resistor elements.

Career Highlights

Throughout his career, Tetsu Ogawa has worked with prominent companies, including Canon Denshi Kabushiki Kaisha and Canon Denki Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in developing advanced technologies in the field of disc drives.

Collaborations

Ogawa has collaborated with notable colleagues such as Masahiro Kato and Masaru Koyahara. Their combined efforts have led to advancements in the technologies they have worked on together.

Conclusion

Tetsu Ogawa's contributions to disc drive technology through his patents and collaborations highlight his role as an influential inventor. His innovative designs continue to impact the industry positively.

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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