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For the Inventor, By the Inventor

Beppu, Japan

Hiromasa Yamada

This inventor holds 5 USPTO granted patents. Top assignees: Hitachi Denshi Kabushiki Kaisha, Seiko Epson Corporation, Hitachi-Kokusai Electric Inc.. Active years: 2002-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromasa Yamada. Retrieved from https://idiyas.com/inventor/hiromasa-yamada

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

USPTO Granted Patents = 5

% Patents Active = 80.0

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 155(Granted Patents)


Location History:

  • Kodaira, JP (2002 - 2003)
  • Beppu, JP (2006 - 2012)

Company Filing History:

goldMedal2 out of 208 
 
Hitachi Denshi Kabushiki Kaisha
 patents
silverMedal2 out of 34,268 
 
Seiko Epson Corporation
 patents
bronzeMedal1 out of 1,258 
 
Hitachi-Kokusai Electric Inc.
 patents

Years Active: 2002-2025

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5 patents (USPTO):Explore Patents
1. 12277917 - Display method and display device (2025-04-14),
2. 8223275 - Projector and correction method (2012-07-17),
3. 7035430 - Intruding object detection method and intruding object monitor apparatus which automatically set a threshold for object detection (2006-04-25),
4. 6546115 - Method of updating reference background image, method of detecting entering objects and system for detecting entering objects using the methods (2003-04-08),
5. 6445409 - Method of distinguishing a moving object and apparatus of tracking and monitoring a moving object (2002-09-03),
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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