Tsuchiura, Japan

Masaji Nagao

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1986-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaji Nagao. Retrieved from https://idiyas.com/inventor/masaji-nagao

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 = 1.4

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Ibaraki, JP (1986)
  • Ami, JP (1991)
  • Tsuchiura, JP (2003)

Company Filing History:


Years Active: 1986-2003

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3 patents (USPTO):Explore Patents

Title: Masaji Nagao: Innovator in Thermal Energy and Refrigeration Technologies

Introduction

Masaji Nagao is a prominent inventor based in Tsuchiura, Japan. He has made significant contributions to the fields of thermal energy reuse and refrigeration technology. With a total of 3 patents to his name, Nagao's work reflects a commitment to enhancing energy efficiency and sustainability.

Latest Patents

Nagao's latest patents include a thermal energy reusing system and an absorption type refrigerating machine. The thermal energy reusing system is designed to utilize the thermal energy from heated air sources to improve combustion efficiency. It incorporates an air feeder that mixes combustion air with both heated and atmospheric air, optimizing the heating process.

The absorption type refrigerating machine features a unique design that includes an evaporator section, absorber section, condenser section, and a regenerator section, all divided into two stages. This innovative configuration enhances heat transfer efficiency while reducing the flow of cooling water, ultimately increasing the overall performance of the refrigerating machine.

Career Highlights

Masaji Nagao is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop and patent groundbreaking technologies that contribute to energy efficiency in various applications.

Collaborations

Throughout his career, Nagao has collaborated with notable colleagues, including Youichi Fujita and Kenichi Kuwabara. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Masaji Nagao's contributions to thermal energy and refrigeration technologies highlight his role as a key innovator in these fields. His patents reflect a dedication to improving energy efficiency and sustainability, making a lasting impact on the industry.

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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