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Ichihara, Japan

Hiroyuki Machida

This inventor holds 7 USPTO granted patents. Top assignee: Showa Denko K.k.. Active years: 2009-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Machida. Retrieved from https://idiyas.com/inventor/hiroyuki-machida

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

Calculating rank

USPTO Granted Patents = 7

% Patents Active = 57.1

Average Co-Inventor Count = 2.1

ph-index = 2

Forward Citations = 11(Granted Patents)

Company Filing History:

Showa Denko K.k.

Years Active: 2009-2012

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8323071 - Method of polishing the inner peripheral end surfaces of substrates for a recording medium using a brush (2012-12-04),

2. 8029687 - Polishing slurry, production method of glass substrate for information recording medium and production method of information recording medium (2011-10-04),

3. 7867579 - Method for forming carbon protective film and method for producing magnetic recording medium, magnetic recording medium and magnetic recording/reproducing apparatus (2011-01-11),

4. 7855002 - Magnetic disk substrate and magnetic recording medium thereof (2010-12-21),

5. 7700205 - Process for manufacturing glass substrate for magnetic recording medium, glass substrate for magnetic recording medium obtained by the process, and magnetic recording medium obtained using the substrate (2010-04-20),

6. 7662493 - Magnetic disk substrate and production method of magnetic disk (2010-02-16),

7. 7622206 - Silicon substrate for magnetic recording medium and magnetic recording medium (2009-11-24),

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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