Wako, Japan

Shoichi Ohtaka

This inventor holds 5 USPTO granted patents. Top assignees: Honda Giken Kogyo Kabushiki Kaisha, Honda Giken Kogyo K.k. (Honda Motor Co., Ltd. in English). Active years: 1984-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shoichi Ohtaka. Retrieved from https://idiyas.com/inventor/shoichi-ohtaka

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 = 4.0

ph-index = 4

Forward Citations = 132(Granted Patents)


Location History:

  • Oi, JP (1984)
  • Saitama, JP (1987 - 1988)
  • Wako, JP (1988 - 1990)

Company Filing History:


Years Active: 1984-1990

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5 patents (USPTO):Explore Patents

Title: The Innovations of Shoichi Ohtaka

Introduction

Shoichi Ohtaka is a notable inventor based in Wako, Japan. He has made significant contributions to the field of internal combustion engines, holding a total of 5 patents. His work focuses on improving the efficiency and functionality of engine systems.

Latest Patents

One of Ohtaka's latest patents is an air-fuel ratio feedback control method for internal combustion engines. This method involves controlling the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine. The control is achieved through a correction value that varies based on output from an exhaust gas ingredient sensor. The maximum and minimum values of this correction are limited to predetermined upper and lower limits. Additionally, the pressure of the vaporized fuel in the fuel supply system is monitored, and the average value of the correction is used for control, with specific conditions for when this calculation is inhibited.

Another significant patent is the blow-by gas heating system for internal combustion engines. This system is designed to heat the blow-by gas system of a water-cooled internal combustion engine. It incorporates engine coolant conduits that are in heat exchange relationship with the blow-by gas hoses and the PCV valve. Various embodiments of this system include configurations with parallel adjacent conduits and concentric conduits surrounding the PCV valve.

Career Highlights

Ohtaka has worked with prominent companies in the automotive industry, including Honda Giken Kogyo Kabushiki Kaisha and Honda Motor Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.

Collaborations

Throughout his career, Ohtaka has collaborated with talented individuals such as Yukio Kondo and Kaoru Aoki. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Shoichi Ohtaka's contributions to the field of internal combustion engines demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing engine performance and efficiency. Ohtaka's work continues to influence the automotive industry and inspire future innovations.

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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