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Masaya Funahashi

This inventor holds 9 USPTO granted patents. Top assignee: Hitachi Maxell, Limited. Active years: 1985-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaya Funahashi. Retrieved from https://idiyas.com/inventor/masaya-funahashi

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

Calculating rank

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 97(Granted Patents)

Location History:

Mishima, JP (1989)
Osaka, JP (1985 - 1993)

Company Filing History:

Hitachi Maxell, Limited

Years Active: 1985-1993

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5256481 - Magnetic recording medium (1993-10-26),

2. 4820565 - Magnetic recording medium (1989-04-11),

3. 4797321 - Magnetic recording medium (1989-01-10),

4. 4709816 - Recording disc cartridge (1987-12-01),

5. 4696869 - Magnetic recording medium (1987-09-29),

6. 4690864 - Magnetic recording medium (1987-09-01),

7. 4666769 - Magnetic disc (1987-05-19),

8. 4647502 - Magnetic recording medium (1987-03-03),

9. 4522885 - Magnetic recording medium (1985-06-11),

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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