Tamamura, Japan

Hiroi Oka

This inventor holds 2 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1993-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroi Oka. Retrieved from https://idiyas.com/inventor/hiroi-oka-00xhr58v

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 = 5.1

ph-index = 2

Forward Citations = 102(Granted Patents)


Location History:

  • Takasaki, JP (1993)
  • Tamamura, JP (2003)

Company Filing History:


Years Active: 1993-2003

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2 patents (USPTO):Explore Patents

Title: Hiroi Oka: Innovator in Semiconductor Technology

Introduction

Hiroi Oka is a notable inventor based in Tamamura, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on developing semiconductor devices that are both efficient and environmentally friendly.

Latest Patents

Oka's latest patents include a semiconductor device and a method of manufacturing the same. This invention provides a semiconductor device that operates stably even under heat generated during its operation, while avoiding the use of environmentally harmful substances such as lead. The device features a support plate that holds a semiconductor chip, which is affixed to the plate using a highly thermal conductive adhesive and a high junction strength adhesive. The design ensures that the adhesives do not contain lead, aligning with Oka's commitment to environmental safety.

Another significant patent involves a resin mold semiconductor device where a chip is mounted to a substrate. This device is molded by a resin member through pressure molding. The molding apparatus is designed so that the resin flows radially along the wires, ensuring optimal performance and efficiency in the semiconductor device.

Career Highlights

Hiroi Oka is currently employed at Hitachi, Ltd., where he continues to innovate in semiconductor technology. His work has been instrumental in advancing the capabilities of semiconductor devices, making them more reliable and environmentally friendly.

Collaborations

Oka has collaborated with notable coworkers such as Tomio Yamada and Kunihiko Nishi. Their combined expertise has contributed to the successful development of innovative semiconductor solutions.

Conclusion

Hiroi Oka's contributions to semiconductor technology reflect his dedication to innovation and environmental responsibility. His patents demonstrate a commitment to creating efficient devices that meet modern technological demands while prioritizing sustainability.

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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