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For the Inventor, By the Inventor

Tokyo, Japan

Keita Hosoyama

This inventor holds 6 USPTO granted patents. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1997-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keita Hosoyama. Retrieved from https://idiyas.com/inventor/keita-hosoyama

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

Calculating rank
USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 4.1

ph-index = 5

Forward Citations = 54(Granted Patents)


Location History:

  • Toyko, JP (1999)
  • Tokyo, JP (1997 - 2004)

Company Filing History:

goldMedal6 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents

Years Active: 1997-2004

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6 patents (USPTO):Explore Patents
1. 6805103 - Cylinder-injection fuel injection valve (2004-10-19),
2. 6439482 - Fuel injection system (2002-08-27),
3. 5979801 - Fuel injection valve with swirler for imparting swirling motion to fuel (1999-11-09),
4. 5967423 - Fuel injection valve (1999-10-19),
5. 5887798 - Cylinder injection type fuel injection valve (1999-03-30),
6. 5630400 - Fuel injection valve for an internal combustion engine (1997-05-20),

Title: Keita Hosoyama: Innovator in Fuel Injection Technology

Introduction

Keita Hosoyama is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of fuel injection technology, holding a total of 6 patents. His innovative designs have advanced the efficiency and functionality of fuel injection systems.

Latest Patents

One of his latest patents is the Cylinder-injection fuel injection valve. This invention features a housing main body and a valve assembly that includes a valve main body with both large-diameter and small-diameter cylinder portions. It also incorporates a valve seat with a fuel injection aperture and a needle valve that controls the opening and closing of this aperture. Additionally, a seal ring is positioned between the cylinder head and a shoulder portion to prevent combustion gas from leaking into the housing main body. A welded joint secures the valve main body to the housing main body, ensuring durability and reliability in operation.

Career Highlights

Keita Hosoyama is currently employed at Mitsubishi Denki Kabushiki Kaisha, where he continues to innovate and develop advanced fuel injection systems. His work has been instrumental in enhancing the performance of automotive technologies.

Collaborations

Throughout his career, Hosoyama has collaborated with notable colleagues, including Mamoru Sumida and Norihisa Fukutomi. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Keita Hosoyama's contributions to fuel injection technology exemplify his dedication to innovation and excellence. His patents reflect a commitment to improving automotive performance and efficiency.

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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