Nitta, Japan

Hiroshi Kobiyama

This inventor holds 2 USPTO granted patents. Top assignee: Sawafuji Electric Co., Ltd.. Active years: 1989-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Kobiyama. Retrieved from https://idiyas.com/inventor/hiroshi-kobiyama

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.4

ph-index = 2

Forward Citations = 25(Granted Patents)


Location History:

  • Gunma, JP (1989)
  • Nitta, JP (1993)

Company Filing History:


Years Active: 1989-1993

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2 patents (USPTO):Explore Patents

Title: Hiroshi Kobiyama: Innovator in Engine-Driven Power Generating Systems

Introduction

Hiroshi Kobiyama is a notable inventor based in Nitta, Japan. He has made significant contributions to the field of power generation, particularly through his innovative designs and systems. With a total of 2 patents, Kobiyama has demonstrated his expertise and commitment to advancing technology.

Latest Patents

Kobiyama's latest patents include an engine-driven power generating system with over-current protection. This system features a bridge circuit section where low-frequency and high-frequency switching elements are driven alternately. It also includes an inverter circuit section that converts the generated a-c voltage into a predetermined level of low-frequency a-c voltage. The system is characterized by an overcurrent detecting circuit that ensures safety by turning off switching elements during overcurrent conditions.

Another significant patent is for a brushless generator. This generator utilizes a rotor to create a magnetic field and a stator with magnetic poles that face the rotor. The design eliminates brushes by using voltages generated in exciting windings, enhancing efficiency and reliability.

Career Highlights

Kobiyama is currently employed at Sawafuji Electric Co., Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in improving power generation systems, making them more efficient and safer for users.

Collaborations

Kobiyama has collaborated with several talented individuals in his field, including Masahiro Osada and Toshihiko Tanuma. These collaborations have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Hiroshi Kobiyama is a distinguished inventor whose work in engine-driven power generating systems has made a significant impact in the industry. His innovative patents reflect his dedication to enhancing technology and improving safety in power generation.

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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