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Hiroto Masai

This inventor holds 6 USPTO granted patents. Top assignee: Aisin Seiki Kabushiki Kaisha. Active years: 1980-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroto Masai. Retrieved from https://idiyas.com/inventor/hiroto-masai

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 = 1.2

ph-index = 4

Forward Citations = 63(Granted Patents)

Location History:

Toyota, JP (1980 - 1983)
Toyota City, JP (1983)
Aichi, JP (1984)

Company Filing History:

Aisin Seiki Kabushiki Kaisha

Years Active: 1980-1984

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4487551 - Fan assembly for vehicles (1984-12-11),

2. 4446952 - Viscous fluid coupling assembly (1984-05-08),

3. 4380279 - Viscous fluid coupling device (1983-04-19),

4. 4370074 - Fan assembly for vehicles (1983-01-25),

5. 4325650 - Connection means for cooling fan assemblies (1982-04-20),

6. 4238016 - Viscous fluid coupling device (1980-12-09),

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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