Utsunomiya, Japan

Hidetoshi Oishi

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Hitachi Car Engineering Co., Ltd., Hitachi, Ltd., Other. Active years: 1999-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hidetoshi Oishi. Retrieved from https://idiyas.com/inventor/hidetoshi-oishi-5ek4d7r2

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 100.0

Average Co-Inventor Count = 5.6

ph-index = 2

Forward Citations = 6(Granted Patents)


Location History:

  • Utsunomiya, JP (1999 - 2000)
  • Hitachinaka, JP (2003)

Company Filing History:


Years Active: 1999-2003

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3 patents (USPTO):Explore Patents

Title: Hidetoshi Oishi: Innovator in Ignition Technology

Introduction

Hidetoshi Oishi is a notable inventor based in Utsunomiya, Japan. He has made significant contributions to the field of ignition technology, holding a total of 3 patents. His work focuses on improving the reliability and efficiency of ignition systems for internal combustion engines.

Latest Patents

Oishi's latest patents include an ignition apparatus designed for internal combustion engines, which features an improved electrical insulation plate made of beryllia. This innovation aims to enhance the reliability of solder bonding parts within the ignition apparatus. The design incorporates a molded case that houses an input-output terminal, a semiconductor switching device, a control circuit board, and a heat sink. The use of laminated structures on the heat sink, including semiconductor switching devices with beryllia, further contributes to the apparatus's effectiveness.

Another significant patent is for an igniter that reduces the bulk and weight of the upper igniter case division. This design lowers the center of gravity of the total apparatus, making it more stable during operation. The igniter features an armor case that contains the coil department and igniter unit, with the coil department case inserted into the plug hole of the internal combustion engine. The igniter unit utilizes a semiconductor device with an integrated switching semiconductor and current limiting circuitry, enhancing its performance.

Career Highlights

Throughout his career, Hidetoshi Oishi has worked with prominent companies such as Hitachi, Ltd. and Hitachi Car Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in ignition technology.

Collaborations

Oishi has collaborated with notable coworkers, including Noboru Sugiura and Kazutoshi Kobayashi. Their combined expertise has contributed to the advancement of ignition systems and related technologies.

Conclusion

Hidetoshi Oishi's contributions to ignition technology demonstrate his commitment to innovation and improvement in the automotive industry. His patents reflect a deep understanding of the complexities involved in ignition systems, making him a significant figure in this field.

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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