Kariya, Japan

Ryoichi Okuda

This inventor holds 6 USPTO granted patents. Top assignees: Nippondenso Co., Ltd., Denso Corporation. Active years: 1981-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Okuda. Retrieved from https://idiyas.com/inventor/ryoichi-okuda

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 5

Forward Citations = 104(Granted Patents)


Location History:

  • Kariya, JP (1981 - 1987)
  • Toyoake, JP (2004)

Company Filing History:


Years Active: 1981-2004

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6 patents (USPTO):Explore Patents

Title: Ryoichi Okuda: Innovator in Semiconductor Technology

Introduction

Ryoichi Okuda is a prominent inventor based in Kariya, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 6 patents. His innovative work has had a lasting impact on various applications, particularly in driving circuits and ignition control systems.

Latest Patents

One of Okuda's latest patents is a semiconductor switching element driving circuit. This circuit includes an overcurrent limiting feature that instantaneously drops the voltage of a gate terminal of an IGBT when the main IGBT current exceeds a predetermined level. Additionally, it incorporates an overcurrent protection circuit that first decreases the main IGBT current at a gradual rate when it surpasses a lower threshold and then reduces it more steeply when it falls below another level. Another notable patent is for an ignition control apparatus for internal combustion engines. This apparatus computes the desired ignition timing based on the engine's load and rotation speed, adjusting the energization starting time of the ignition coil accordingly. The system also retards the energization starting time based on the primary current through the ignition coil and interrupts the current flow at the ignition timing.

Career Highlights

Throughout his career, Ryoichi Okuda has worked with notable companies such as Nippondenso Co., Ltd. and Denso Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the semiconductor industry.

Collaborations

Okuda has collaborated with esteemed colleagues, including Tomoatsu Makino and Noboru Yamamoto. Their combined expertise has fostered innovation and advancement in their respective fields.

Conclusion

Ryoichi Okuda's contributions to semiconductor technology and his innovative patents highlight his role as a key figure in the industry. His work continues to influence advancements in electronic systems and internal combustion engines.

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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