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For the Inventor, By the Inventor

Yokohama, Japan

Kiyoshi Akamatsu

This inventor holds 9 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Global Storage Technologies Japan, Ltd., Hiatchi, Ltd.. Active years: 2000-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyoshi Akamatsu. Retrieved from https://idiyas.com/inventor/kiyoshi-akamatsu

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

USPTO Granted Patents = 9

% Patents Active = 22.2

Average Co-Inventor Count = 6.6

ph-index = 5

Forward Citations = 97(Granted Patents)


Location History:

  • Yokohama, KP (2006)
  • Yokohama, JP (2000 - 2007)

Company Filing History:

goldMedal6 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
bronzeMedal1 out of 17 
 
Hiatchi, Ltd.
 patents

Years Active: 2000-2007

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9 patents (USPTO):Explore Patents
1. 7259936 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2007-08-21),
2. 7035049 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2006-04-25),
3. 6937445 - Recording/reproducing separated type head with heat radiating structure (2005-08-30),
4. 6801397 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device (2004-10-05),
5. 6690544 - Magnetic head and magnetic head manufacturing method (2004-02-10),
6. 6577472 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture (2003-06-10),
7. 6504680 - Magnetic head and magnetic head manufacturing method (2003-01-07),
8. 6278582 - Magnetic head and magnetic head manufacturing method (2001-08-21),
9. 6096445 - Substrate for a magnetic recording medium, the magnetic recording (2000-08-01),

I specialize in innovations, inventions, inventors, patent attorneys, assignees, and patents.

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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