Hiroshima, Japan

Tetsushi Hosokai

This inventor holds 26 USPTO granted patents, primarily in Automotive Engine Diagnostics. Top assignees: Mazda Motor Corporation, Ford Global Technolgoies, LLC, Mitsubishi Denki Kabushiki Kaisha. Active years: 1984-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsushi Hosokai. Retrieved from https://idiyas.com/inventor/tetsushi-hosokai

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


% Patents Active = 92.3

Average Co-Inventor Count = 3.5

ph-index = 11

Forward Citations = 285(Granted Patents)


Location History:

  • Hiroshima, JP (1984 - 1999)
  • Hiroshima-Ken, JP (2001)
  • Aki-gun, JP (2002 - 2004)
  • Kure, JP (1989 - 2013)

Company Filing History:


Years Active: 1984-2013

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Areas of Expertise:
Diagnosis
Engine Control
Fuel Injection
Air-Fuel Ratio
Malfunction Detection
Catalyst Degradation
Lean Burn Engine
Vapor Leakage
Idle Speed Control
Ignition Timing
Evaporation Control
Automotive Technology
26 patents (USPTO):Explore Patents

Title: Tetsushi Hosokai – Innovator in Engine Diagnostics

Introduction

Tetsushi Hosokai, based in Hiroshima, Japan, is a prolific inventor with a remarkable portfolio of 26 patents. His innovative spirit has significantly contributed to advancements in internal combustion engine technology, particularly in diagnostic systems.

Latest Patents

Among his latest patents are two notable inventions:

1. **Diagnosis for Multiple Cylinder Engine** - This patent outlines methods and systems designed for diagnosing multi-cylinder internal combustion engines. The innovative approach involves determining cylinder air-fuel imbalance through the squared value of the difference between two specific values, improving the accuracy of engine diagnostics.

2. **Malfunction Diagnostic Apparatus for Evaporated Fuel Purge System** - This invention presents a diagnostic apparatus aimed at identifying abnormalities in the evaporated fuel purge system of internal combustion engines. The system can detect issues such as looseness or clogging in the purge line through a carefully orchestrated sequence of pump activation and current measurements. By analyzing changes in load currents, the system can effectively determine whether the purge line is functioning normally or if it is facing issues such as an open-air state or clogging.

Career Highlights

Tetsushi Hosokai's career includes notable contributions at leading companies in the automotive industry. He has worked at Mazda Motor Corporation and Toyo Kogyo Co., Ltd., where he focused on enhancing engine performance and diagnostics through his innovative inventions.

Collaborations

Throughout his career, Hosokai has collaborated with esteemed colleagues, including Futoshi Nishioka and Tetsuro Takaba. These collaborations have likely facilitated the exchange of ideas and spurred creativity in their respective projects.

Conclusion

Tetsushi Hosokai stands out as an influential figure in the realm of engine diagnostics. With a robust collection of patents and significant industry experience, his contributions continue to shape the future of internal combustion engine technology. His commitment to innovation demonstrates the vital role inventors play in advancing engineering and automotive solutions.

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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